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Flórez-Fernández N, Domínguez H, Torres MD. A green approach for alginate extraction from Sargassum muticum brown seaweed using ultrasound-assisted technique. Int J Biol Macromol 2019; 124:451-459. [PMID: 30496857 DOI: 10.1016/j.ijbiomac.2018.11.232] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2018] [Revised: 11/14/2018] [Accepted: 11/25/2018] [Indexed: 01/19/2023]
Abstract
Ultrasound assisted aqueous extraction of alginate from Sargassum muticum was proposed to minimize the use of chemicals, high temperatures and prolonged times, with comparable extraction yields to conventional acid/alkali procedures. The alginate, precipitated from the liquors obtained after ultrasound assisted extraction of fucoidan and phlorotannin fractions, and converted to alginic acid sodium salt by a green treatment was characterized by FTIR-ATR, 1H NMR, HPSEC, MALDI-TOF, rheology and citotoxitity. A clear influence of the sonication time was observed on the alginate molar mass, block structure, thermo-rheological and tumoral cell growth inhibition features. All tested hydrogels featured stable and thermo-reversible characteristics.
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Affiliation(s)
- N Flórez-Fernández
- Department of Chemical Engineering, University of Vigo (Campus Ourense), Edificio Politécnico, As Lagoas, 32004 Ourense, Spain.
| | - H Domínguez
- Department of Chemical Engineering, University of Vigo (Campus Ourense), Edificio Politécnico, As Lagoas, 32004 Ourense, Spain.
| | - M D Torres
- Department of Chemical Engineering, University of Vigo (Campus Ourense), Edificio Politécnico, As Lagoas, 32004 Ourense, Spain.
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202
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Zhan F, Li J, Shi M, Wu D, Li B. Foaming Properties and Linear and Nonlinear Surface Dilatational Rheology of Sodium Caseinate, Tannin Acid, and Octenyl Succinate Starch Ternary Complex. J Agric Food Chem 2019; 67:2340-2349. [PMID: 30640476 DOI: 10.1021/acs.jafc.8b06356] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In this paper, the foaming and surface properties of sodium caseinate (SC), sodium caseinate/tannin acid (SC/TA), sodium caseinate/octenyl succinate starch (SC/OSA-starch), and sodium caseinate/tannin acid/octenyl succinate starch (SC/TA/OSA-starch) complex systems are described. First, foaming properties of different samples were compared at pH 6.0. The interface adsorption and linear surface dilatational rheological of different samples were characterized in the linear viscoelastic region to explore the relationship between macroscopic foaming properties and surface properties. At equal protein concentrations, the foamability and foam stability of the SC/TA/OSA-starch complex was markedly higher than that of the SC/TA complex. Meanwhile, the surface properties of the SC/TA/OSA-starch complex were also superior to those of the SC/TA complex. Finally, to investigate the nonlinear surface dilatational rheological behavior of the air/water interface stabilized by complex systems, the large-amplitude oscillatory dilatational rheology and Lissajous plots were studied. For the SC/TA/OSA-starch complex, the OSA-starch increases the degree of strain softening in extension, suggesting that the surface structure may change from a surface gel to a mixed phase of SC/TA patches and OSA-starch domains. These findings indicate that the complex formed between polyphenols, proteins, and polysaccharides could be used as a good alternative to understand and, consequently, improve the surface and foaming properties in food matrices.
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203
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Shao C, Meng L, Wang M, Cui C, Wang B, Han CR, Xu F, Yang J. Mimicking Dynamic Adhesiveness and Strain-Stiffening Behavior of Biological Tissues in Tough and Self-Healable Cellulose Nanocomposite Hydrogels. ACS Appl Mater Interfaces 2019; 11:5885-5895. [PMID: 30652853 DOI: 10.1021/acsami.8b21588] [Citation(s) in RCA: 88] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Although self-healing gels with structural resemblance to biological tissues attract great attention in biomedical fields, it remains a dilemma for combination between fast self-healing properties and high mechanical toughness. On the basis of the design of dynamic reversible cross-links, we incorporate rigid tannic acid-coated cellulose nanocrystal (TA@CNC) motifs into the poly(vinyl alcohol) (PVA)-borax dynamic networks for the fabrication of a high toughness and rapidly self-healing nanocomposite (NC) hydrogel, together with dynamically adhesive and strain-stiffening properties that are particularly indispensable for practical applications in soft tissue substitutes. The results demonstrate that the obtained NC gels present a highly interconnected network, where flexible PVA chains wrap onto the rigid TA@CNC motifs and form the dynamic TA@CNC-PVA clusters associated by hydrogen bonds, affording the critical mechanical toughness. The synergetic interactions between borate-diol bonds and hydrogen bonds impart a typical self-healing behavior into the NC gels, allowing the dynamic cross-linked networks to undergo fast rearrangement in the time scale of seconds. Moreover, the obtained NC hydrogels not only mimic the main feature of biological tissues with the unique strain-stiffening behavior but also display unique dynamic adhesiveness to nonporous and porous substrates. It is expected that this versatile approach opens up a new prospect for the rational design of multifunctional cellulosic hydrogels with remarkable performance to expand their applications.
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Affiliation(s)
- Changyou Shao
- Beijing Key Laboratory of Lignocellulosic Chemistry , Beijing Forestry University , No 35, Tsinghua East Road , Haidian District, Beijing 100083 , China
| | - Lei Meng
- Beijing Key Laboratory of Lignocellulosic Chemistry , Beijing Forestry University , No 35, Tsinghua East Road , Haidian District, Beijing 100083 , China
| | - Meng Wang
- Beijing Key Laboratory of Lignocellulosic Chemistry , Beijing Forestry University , No 35, Tsinghua East Road , Haidian District, Beijing 100083 , China
| | - Chen Cui
- Beijing Key Laboratory of Lignocellulosic Chemistry , Beijing Forestry University , No 35, Tsinghua East Road , Haidian District, Beijing 100083 , China
| | - Bo Wang
- Beijing Key Laboratory of Lignocellulosic Chemistry , Beijing Forestry University , No 35, Tsinghua East Road , Haidian District, Beijing 100083 , China
| | - Chun-Rui Han
- Beijing Key Laboratory of Lignocellulosic Chemistry , Beijing Forestry University , No 35, Tsinghua East Road , Haidian District, Beijing 100083 , China
| | - Feng Xu
- Beijing Key Laboratory of Lignocellulosic Chemistry , Beijing Forestry University , No 35, Tsinghua East Road , Haidian District, Beijing 100083 , China
| | - Jun Yang
- Beijing Key Laboratory of Lignocellulosic Chemistry , Beijing Forestry University , No 35, Tsinghua East Road , Haidian District, Beijing 100083 , China
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204
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Gallardo A, Morcuende D, Solla A, Moreno G, Pulido F, Quesada A. Regulation by biotic stress of tannins biosynthesis in Quercus ilex: Crosstalk between defoliation and Phytophthora cinnamomi infection. Physiol Plant 2019; 165:319-329. [PMID: 30294855 DOI: 10.1111/ppl.12848] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Revised: 09/28/2018] [Accepted: 10/02/2018] [Indexed: 05/07/2023]
Abstract
Sustainability of the Mediterranean forest is threatened by oak decline, a disease of holm oak and other Quercus species that is initiated by infection with the oomycete Phytophthora cinnamomi. Focusing on the role of tannins in the chemical defense of plants, this work investigated whether tannins content in Quercus ilex is regulated by biotic stress. Screening of published genomes allowed the identification of Quercus sequences encoding enzymes for early steps of the biosynthesis of phenolic compounds, like hydrolysable tannins and condensed tannins (CT) among others, plus genes involved in the late steps of CT biosynthesis. Four days after treatment of Q. ilex seedlings by mechanical defoliation, P. cinnamomi infection and both stressors simultaneously, mRNA concentrations for tannins biosynthesis enzymes were measured in leaves. Among the transcript amount for shikimate dehydrogenase (SDH, EC 1.1.1.25), anthocyanidin reductase (EC 1.3.1.77), anthocyanidin synthase (EC 1.14.11.19) and leucoanthocyanidine reductase (EC 1.17.1.3), defoliation induced gene expression for SDH2 isoenzyme. About 4 days after infection of roots by P. cinnamomi, this up-regulation was canceled and SDH enzyme activity decreased. Furthermore, during this late stage of biotrophic interaction the pathogen switched off the correlation engaged by defoliation between the expression of SDH1 and SDH2 encoding genes and chemical defenses corresponding to total tannins, which were down-regulated. Thus, tannins biosynthesis in seedlings of Q. ilex is induced after mechanical defoliation whereas infection by the pathogen interferes with this regulation, potentially increasing the susceptibility of plants to herbivory and aggravating the impact of biotic stress.
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Affiliation(s)
- Alejandro Gallardo
- Departamento de Bioquímica, Facultad de Veterinaria, Universidad de Extremadura, 10003, Cáceres, Spain
| | - David Morcuende
- IPROCAR Research Institute, TECAL Research Group, University of Extremadura, 10003 Cáceres, Spain
| | - Alejandro Solla
- Institute for Dehesa Research (INDEHESA), Ingeniería Forestal y del Medio Natural, Universidad de Extremadura, 10600, Plasencia, Spain
| | - Gerardo Moreno
- Institute for Dehesa Research (INDEHESA), Ingeniería Forestal y del Medio Natural, Universidad de Extremadura, 10600, Plasencia, Spain
| | - Fernando Pulido
- Institute for Dehesa Research (INDEHESA), Ingeniería Forestal y del Medio Natural, Universidad de Extremadura, 10600, Plasencia, Spain
| | - Alberto Quesada
- Departamento de Bioquímica, Facultad de Veterinaria, Universidad de Extremadura, 10003, Cáceres, Spain
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205
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Chowdhury P, Nagesh PKB, Hatami E, Wagh S, Dan N, Tripathi MK, Khan S, Hafeez BB, Meibohm B, Chauhan SC, Jaggi M, Yallapu MM. Tannic acid-inspired paclitaxel nanoparticles for enhanced anticancer effects in breast cancer cells. J Colloid Interface Sci 2019; 535:133-148. [PMID: 30292104 PMCID: PMC6992213 DOI: 10.1016/j.jcis.2018.09.072] [Citation(s) in RCA: 82] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Revised: 09/20/2018] [Accepted: 09/21/2018] [Indexed: 12/21/2022]
Abstract
Paclitaxel (PTX) is a gold standard chemotherapeutic agent for breast, ovarian, pancreatic and non-small cell lung carcinoma. However, in clinical use PTX can have adverse side effects or inadequate pharmacodynamic parameters, limiting its use. Nanotechnology is often employed to reduce the therapeutic dosage required for effective therapy, while also minimizing the systemic side effects of chemotherapy drugs. However, there is no nanoformulation of paclitaxel with chemosensitization motifs built in. With this objective, we screened eleven pharmaceutical excipients to develop an alternative paclitaxel nanoformulation using a self-assembly method. Based on the screening results, we observed tannic acid possesses unique properties to produce a paclitaxel nanoparticle formulation, i.e., tannic acid-paclitaxel nanoparticles. This stable TAP nanoformulation, referred to as TAP nanoparticles (TAP NPs), showed a spherical shape of ~ 102 nm and negative zeta potential of ~ -8.85. The presence of PTX in TAP NPs was confirmed by Fourier Transform Infrared (FTIR) spectra, thermogravimetric analyzer (TGA), and X-ray diffraction (XRD). Encapsulation efficiency of PTX in TAP NPs was determined to be ≥96%. Intracellular drug uptake of plain drug PTX on breast cancer cells (MDA-MB-231) shows more or less constant drug levels in 2 to 6 h, suggesting drug efflux by the P-gp transporters, over TAP NPs, in which PTX uptake was more than 95.52 ± 11.01% in 6 h, as analyzed by liquid chromatography-tandem mass spectrometry (LC-MS/MS). Various biological assays such as proliferation, clonogenic formation, invasion, and migration confirm superior anticancer effects of TAP NPs over plain PTX at all tested concentrations. P-gp expression, beta-tubulin stabilization, Western blot, and microarray analysis further confirm the improved therapeutic potential of TAP NPs. These results suggest that the TAP nanoformulation provides an important reference for developing a therapeutic nanoformulation affording pronounced, enhanced effects in breast cancer therapy.
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Affiliation(s)
- Pallabita Chowdhury
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Prashanth K B Nagesh
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Elham Hatami
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Santosh Wagh
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Nirnoy Dan
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Manish K Tripathi
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Sheema Khan
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Bilal B Hafeez
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Bernd Meibohm
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Subhash C Chauhan
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Meena Jaggi
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Murali M Yallapu
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, Memphis, TN, USA.
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206
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Lee J, Jun M. Dual BACE1 and Cholinesterase Inhibitory Effects of Phlorotannins from Ecklonia cava-An In Vitro and in Silico Study. Mar Drugs 2019; 17:E91. [PMID: 30717208 PMCID: PMC6410325 DOI: 10.3390/md17020091] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Revised: 01/24/2019] [Accepted: 01/28/2019] [Indexed: 01/09/2023] Open
Abstract
Alzheimer's disease (AD) is one of the most common neurodegenerative diseases with a multifactorial nature. β-Secretase (BACE1) and acetylcholinesterase (AChE), which are required for the production of neurotoxic β-amyloid (Aβ) and the promotion of Aβ fibril formation, respectively, are considered as prime therapeutic targets for AD. In our efforts towards the development of potent multi-target, directed agents for AD treatment, major phlorotannins such as eckol, dieckol, and 8,8'-bieckol from Ecklonia cava (E. cava) were evaluated. Based on the in vitro study, all tested compounds showed potent inhibitory effects on BACE1 and AChE. In particular, 8,8'-bieckol demonstrated the best inhibitory effect against BACE1 and AChE, with IC50 values of 1.62 ± 0.14 and 4.59 ± 0.32 µM, respectively. Overall, kinetic studies demonstrated that all the tested compounds acted as dual BACE1 and AChE inhibitors in a non-competitive or competitive fashion, respectively. In silico docking analysis exhibited that the lowest binding energies of all compounds were negative, and specifically different residues of each target enzyme interacted with hydroxyl groups of phlorotannins. The present study suggested that major phlorotannins derived from E. cava possess significant potential as drug candidates for therapeutic agents against AD.
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Affiliation(s)
- Jinhyuk Lee
- Korean Bioinformation Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 125, Gwahak-ro, Yuseong-gu, Daejeon 34141, Korea.
- Department of Bioinformatics, KIRBB School of Bioscience, Korea University of Sciences and Technology, 217 Gajung-ro, Yuseong-gu, Daejeon 34113, Korea.
| | - Mira Jun
- Department of Food Science and Nutrition, College of Health Sciences, Dong-A University, 37, Nakdong-daero 550 beon-gil, Saha-gu, Busan 49315, Korea.
- Center for Silver-Targeted Biomaterials, Brain Busan 21 Plus Program, Graduate School, Dong-A University, Nakdong-daero 550 beon-gil, Saha-gu, Busan 49315, Korea.
- Institute of Convergence Bio-Health, Dong-A University, Busan 49315, Korea.
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207
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Araujo ACM, Almeida Jr. EB, Rocha CQ, Lima AS, Silva CR, Tangerina MMP, Lima Neto JS, Costa-Junior LM. Antiparasitic activities of hydroethanolic extracts of Ipomoea imperati (Vahl) Griseb. (Convolvulaceae). PLoS One 2019; 14:e0211372. [PMID: 30682142 PMCID: PMC6347238 DOI: 10.1371/journal.pone.0211372] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Accepted: 01/13/2019] [Indexed: 11/19/2022] Open
Abstract
Ipomoea imperati is widely used in tropical areas to treat several pathological conditions. The effect of this plant against parasitic species has not been investigated even being used for this purpose in the Brazilian northeastern. This study aimed to evaluate the anthelmintic and acaricide potential of a hydroethanolic extract of I. imperati leaves and stolons. I. imperati leaves and stolons were crushed and subjected to maceration in ethanol 70% (v/v), after which the solvent was removed using a rotary evaporator. The chromatographic profile of the extract was obtained by UV Spectrum high-performance liquid chromatography and compounds were identified by liquid chromatography/electrospray ionization tandem mass spectrometry. Identification of the compounds present in the extract was achieved by comparing their retention times and UV spectra with data in the literature. Anthelmintic activity was evaluated by larval exsheathment inhibition assays using Haemonchus contortus larvae and five concentrations of each extract ranging from 0.07 to 1.2 mg/mL. Acaricide activity was evaluated via larval immersion of Rhipicephalus microplus in eight concentrations of each extract ranging from 5.0 to 25.0 mg/mL. Live and dead larvae were counted after 24 hours. The median inhibitory concentration (IC50) for H. contortus larvae and the median lethal concentration (LC50) for R. microplus larvae were calculated. Twelve compounds were observed in the hydroethanolic extract of leaves, with a predominance of the aglycone form of flavonoids and tannins. This extract was effective against H. contortus larvae, presenting an average inhibitory concentration of 0.22 mg/mL, but showed no activity toward R. microplus larvae. The stolon hydroethanolic extract presented 11 compounds, with phenolic acids and glycosylated flavonoids prevailing. This extract showed low activity on R. microplus and no effect on inhibiting H. contortus larval exsheathment at the concentrations tested. This study is the first to assess the anthelmintic and acaricidal activities of I. imperati. Data reported confirm promising potential of I. imperati leaves hydroethanolic extract against H. contortus. This effect could be due to its secondary compounds presents in this extract, such as procyanidin, kaempferol, isoquercitrin and rutin.
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Affiliation(s)
- Ana Cássia M. Araujo
- Programa de Pós-Graduação em Biodiversidade e Conservação, Centro de Ciências Biológicas e da Saúde, Universidade Federal do Maranhão, São Luís, Maranhão, Brazil
| | - Eduardo B. Almeida Jr.
- Departamento de Biologia, Universidade Federal do Maranhão, São Luís, Maranhão, Brazil
- * E-mail: (EBA); (LMC-J)
| | - Cláudia Q. Rocha
- Departamento de Química, Universidade Federal do Maranhão, São Luís, Maranhão, Brazil
| | - Aldilene S. Lima
- Departamento de Química, Universidade Federal do Maranhão, São Luís, Maranhão, Brazil
| | - Carolina R. Silva
- Departamento de Patologia, Universidade Federal do Maranhão, São Luís, Maranhão, Brazil
| | - Marcelo M. P. Tangerina
- Laboratório de Bioprospecção de Produtos Naturais, Instituto de Biociências, Universidade Estadual Paulista, São Vicente, São Paulo, Brazil
| | - José S. Lima Neto
- Universidade Federal do Piauí, Departamento de Farmácia, Laboratório de Geoquímica Orgânica, Teresina, Piauí, Brazil
| | - Lívio M. Costa-Junior
- Departamento de Patologia, Universidade Federal do Maranhão, São Luís, Maranhão, Brazil
- * E-mail: (EBA); (LMC-J)
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208
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Zhang W, Christofferson AJ, Besford QA, Richardson JJ, Guo J, Ju Y, Kempe K, Yarovsky I, Caruso F. Metal-dependent inhibition of amyloid fibril formation: synergistic effects of cobalt-tannic acid networks. Nanoscale 2019; 11:1921-1928. [PMID: 30644497 DOI: 10.1039/c8nr09221d] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Metal-phenolic networks (MPNs) have received widespread interest owing to their modular incorporation of functional metal ions and phenolic ligands. However, the interaction between MPNs and biomolecules is still relatively unexplored. Herein, we studied the effects of MPN-coated gold nanoparticles on amyloid fibril formation (which is associated with Alzheimer's disease) as a function of the metal ion in the MPN systems. All coated particles examined inhibited amyloid formation, with cobalt(ii) MPN-coated particles exhibiting the highest inhibition activity (90%). Molecular dynamics simulations and quantum mechanics calculations suggested that the geometry of the exposed cobalt coordination site in the cobalt-tannic acid networks facilitates its interactions with histidine and methionine residues in the amyloid beta peptides. Furthermore, the unique structure of cobalt MPNs may enable a wider variety of biomedical applications.
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Affiliation(s)
- Wenjie Zhang
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, and the Department of Chemical Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia.
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209
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Sun L, Warren FJ, Gidley MJ, Guo Y, Miao M. Mechanism of binding interactions between young apple polyphenols and porcine pancreatic α-amylase. Food Chem 2019; 283:468-474. [PMID: 30722900 DOI: 10.1016/j.foodchem.2019.01.087] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2018] [Revised: 01/05/2019] [Accepted: 01/06/2019] [Indexed: 12/18/2022]
Abstract
The binding interactions between young apple polyphenols and porcine pancreatic α-amylase were investigated through isothermal titration calorimetry (ITC), differential scanning calorimetry (DSC) and molecular docking. The results obtained were compared with those obtained through inhibition kinetics and fluorescence quenching. It was found that binding of tannic acid, chlorogenic acid, caffeic acid and epicatechin with α-amylase is an exothermal process, with the binding constants in the order of tannic acid > chlorogenic acid > caffeic acid > epicatechin. This is consistent with the orders of reciprocal of competitive inhibition constant and fluorescence quenching constant. The binding energy obtained through molecular docking showed the same order, except for epicatechin. These results are consistent with the inhibition of α-amylase being caused by the binding of the polyphenols with the enzyme. In addition, from the fluorescence quenching and DSC data, total polyphenols, tannic acid, chlorogenic acid and caffeic acid were found to partially unfold the enzyme structure.
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Affiliation(s)
- Lijun Sun
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi, China
| | - Frederick J Warren
- Quadram Institute Bioscience, Norwich Research Park, Norwich NR4 7UA, UK
| | - Michael J Gidley
- Centre for Nutrition and Food Sciences, Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, St. Lucia, Brisbane, Queensland 4072, Australia
| | - Yurong Guo
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an 710062, PR China.
| | - Ming Miao
- State Key Laboratory of Food Science & Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi, Jiangsu 214122, PR China.
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210
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Tang CY, Yu P, Tang LS, Wang QY, Bao RY, Liu ZY, Yang MB, Yang W. Tannic acid functionalized graphene hydrogel for organic dye adsorption. Ecotoxicol Environ Saf 2018; 165:299-306. [PMID: 30205332 DOI: 10.1016/j.ecoenv.2018.09.009] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Revised: 08/30/2018] [Accepted: 09/01/2018] [Indexed: 05/09/2023]
Abstract
Water purification provides a feasible way to relieve the pressure of water shortage and water pollution which we are facing and adsorption is one of the most effective ways to turn polluted water into clean water. Here, we prepared graphene-tannic acid hydrogel using graphene oxide and tannic acid, a natural green reducer and adsorbent, through one-step hydrothermal method. The composition, structure, and morphology of the compounds were systematically examined. The adsorption of dyes was mainly influenced by the morphology and chemical properties of gel. The addition of tannic acid, a molecule rich in oxygen containing functional groups, changed the surface chemistry of graphene sheets and microstructures of gels, which was beneficial for contaminate adsorption. Compared with reduced graphene oxide hydrogel, the graphene-tannic acid hydrogel showed an outstanding adsorption capacity for organic dye methylene blue, more than 500 mg/g at pH 10 and the maximum adsorption capacity was up to 714 mg/g. After adsorption, ethanol and inorganic acid solution can be used as desorption agent and there was no significant adsorption capacity loss after 5 cycles.
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Affiliation(s)
- Chun-Yan Tang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065 Sichuan, China
| | - Peng Yu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065 Sichuan, China
| | - Li-Sheng Tang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065 Sichuan, China
| | - Qian-Yu Wang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065 Sichuan, China
| | - Rui-Ying Bao
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065 Sichuan, China
| | - Zheng-Ying Liu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065 Sichuan, China
| | - Ming-Bo Yang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065 Sichuan, China
| | - Wei Yang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065 Sichuan, China.
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211
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do Prado MEA, Queiroz VAV, Correia VTDV, Neves EO, Roncheti EFS, Gonçalves ACA, de Menezes CB, de Oliveira FCE. Physicochemical and sensorial characteristics of beef burgers with added tannin and tannin-free whole sorghum flours as isolated soy protein replacer. Meat Sci 2018; 150:93-100. [PMID: 30616075 DOI: 10.1016/j.meatsci.2018.12.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Revised: 12/04/2018] [Accepted: 12/12/2018] [Indexed: 01/08/2023]
Abstract
The physicochemical and sensorial characterization of beef burgers with added sorghum flours as replacer for the isolated soy protein (ISP) usually used in the conventional formulations was performed. Three formulations were prepared: one conventional (CN) with 3% ISP and two with 3% tannin (BRS 305) and tannin-free (BR 501) whole sorghum flour (WSF) of BRS 305 and BR 501 genotypes. There was no difference among the formulations for most of the physicochemical characteristics. The moisture retention was higher in BRS 305 (P < .05). The added WSF influenced the color of the raw beef burger; and the proximate composition and the antioxidant characteristics of the raw and cooked formulations (P < .05). The purchase intention and flavor, texture and overall acceptability scores were higher for the sorghum products than CN (P < .05). Therefore, the replacing of ISP by WSF in beef burger, especially by the BRS 305 genotype, might be a technologically, nutritionally and sensorially viable option.
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Affiliation(s)
| | | | | | - Erick Ornellas Neves
- Federal University of Ouro Preto, Ouro Preto CEP 35400-000, Minas Gerais, Brazil
| | - Elder Felipe Silva Roncheti
- Federal University of São João del-Rei, Sete Lagoas, Minas Gerais CEP 35701-970, Brazil; Federal University of Viçosa, Viçosa, Minas Gerais CEP 36570-900, Brazil
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212
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Bernardini G, Minetti M, Polizzotto G, Biazzo M, Santucci A. Pro-Apoptotic Activity of French Polynesian Padina pavonica Extract on Human Osteosarcoma Cells. Mar Drugs 2018; 16:E504. [PMID: 30551628 PMCID: PMC6316765 DOI: 10.3390/md16120504] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Revised: 12/06/2018] [Accepted: 12/11/2018] [Indexed: 12/15/2022] Open
Abstract
Recently, seaweeds and their extracts have attracted great interest in the pharmaceutical industry as a source of bioactive compounds. Studies have demonstrated the cytotoxic activity of macroalgae towards different types of cancer cell models, and their consumption has been suggested as a chemo-preventive agent against several cancers such as breast, cervix and colon cancers. Reports relevant to the chemical properties of brown algae Padina sp. are limited and those accompanied to a comprehensive evaluation of the biological activity on osteosarcoma (OS) are non existent. In this report, we explored the chemical composition of French Polynesian Padina pavonica extract (EPP) by spectrophotometric assays (total phenolic, flavonoid and tannin content, and antioxidant activity) and by gas chromatography-mass spectrometry (GC-MS) analysis, and provided EPP lipid and sterols profiles. Several compounds with relevant biological activity were also identified that suggest interesting pharmacological and health-protecting effects for EPP. Moreover, we demonstrated that EPP presents good anti-proliferative and pro-apoptotic activities against two OS cell lines, SaOS-2 and MNNG, with different cancer-related phenotypes. Finally, our data suggest that EPP might target different properties associated with cancer development and aggressiveness.
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Affiliation(s)
- Giulia Bernardini
- Dipartimento di Biotecnologie, Chimica e Farmacia (Dipartimento di Eccellenza 2018⁻2022), Università degli Studi di Siena, via Aldo Moro 2, 53100 Siena, Italy.
| | - Mariagiulia Minetti
- Dipartimento di Biotecnologie, Chimica e Farmacia (Dipartimento di Eccellenza 2018⁻2022), Università degli Studi di Siena, via Aldo Moro 2, 53100 Siena, Italy.
- Institute of Cellular Pharmacology (ICP Concepts Ltd.), F24, Triq Valletta, Mosta Technopark, MST 3000 Mosta, Malta.
| | - Giuseppe Polizzotto
- Institute of Cellular Pharmacology (ICP Concepts Ltd.), F24, Triq Valletta, Mosta Technopark, MST 3000 Mosta, Malta.
| | - Manuele Biazzo
- Institute of Cellular Pharmacology (ICP Concepts Ltd.), F24, Triq Valletta, Mosta Technopark, MST 3000 Mosta, Malta.
| | - Annalisa Santucci
- Dipartimento di Biotecnologie, Chimica e Farmacia (Dipartimento di Eccellenza 2018⁻2022), Università degli Studi di Siena, via Aldo Moro 2, 53100 Siena, Italy.
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213
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Tian J, Yu Y, Wang Y, Li H, Yang L, Du B, Ma G. Tannic Acid-Induced Surface-Catalyzed Secondary Nucleation during the Amyloid Fibrillation of Hen Egg-White Lysozyme. Int J Mol Sci 2018; 19:E4009. [PMID: 30545098 PMCID: PMC6320987 DOI: 10.3390/ijms19124009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Revised: 11/27/2018] [Accepted: 12/07/2018] [Indexed: 01/17/2023] Open
Abstract
Amyloid fibrillation by hen egg white lysozyme under the influence of tannic acid was investigated by atomic force microscopy and fluorescence spectroscopy. Tannic acid was found to be able to induce the formation of amyloid fibrils with an interesting mixed morphology. Such morphology features with the existence of areas of thickening alternating with areas of normal height. This novel modulation effect of tannic acid on amyloid fibrillation was interpreted by the established surface-catalyzed secondary nucleation theory. We further performed a fluorescence quenching study to investigate the intermolecular interaction between tannic acid and lysozyme. The results support that lysozyme and tannic acid interact with each other mainly through hydrophobic interactions. We also discussed why hydrogen-bonding interaction is not a dominant factor in the interaction between tannic acid and lysozyme though tannic acid contains a significant amount of hydroxyl groups. Our work provides new insight into the effect of tannic acid, a well-known amyloid inhibitor, on amyloid fibrillation.
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Affiliation(s)
- Jing Tian
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, Key Laboratory of Analytical Science and Technology of Hebei Province, College of Chemistry and Environmental Science, Hebei University, Baoding 071002, China.
| | - Yang Yu
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, Key Laboratory of Analytical Science and Technology of Hebei Province, College of Chemistry and Environmental Science, Hebei University, Baoding 071002, China.
| | - Yao Wang
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, Key Laboratory of Analytical Science and Technology of Hebei Province, College of Chemistry and Environmental Science, Hebei University, Baoding 071002, China.
| | - Haoyi Li
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, Key Laboratory of Analytical Science and Technology of Hebei Province, College of Chemistry and Environmental Science, Hebei University, Baoding 071002, China.
| | - Lujuan Yang
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, Key Laboratory of Analytical Science and Technology of Hebei Province, College of Chemistry and Environmental Science, Hebei University, Baoding 071002, China.
| | - Baoan Du
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, Key Laboratory of Analytical Science and Technology of Hebei Province, College of Chemistry and Environmental Science, Hebei University, Baoding 071002, China.
| | - Gang Ma
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, Key Laboratory of Analytical Science and Technology of Hebei Province, College of Chemistry and Environmental Science, Hebei University, Baoding 071002, China.
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214
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Le Z, Chen Y, Han H, Tian H, Zhao P, Yang C, He Z, Liu L, Leong KW, Mao HQ, Liu Z, Chen Y. Hydrogen-Bonded Tannic Acid-Based Anticancer Nanoparticle for Enhancement of Oral Chemotherapy. ACS Appl Mater Interfaces 2018; 10:42186-42197. [PMID: 30444601 DOI: 10.1021/acsami.8b18979] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Oral chemotherapy has been emerging as a hopeful therapeutic regimen for the treatment of various cancers because of its high safety and convenience, lower costs, and high patient compliance. Currently, nanoparticulate drug delivery systems (NDDS) exhibit many unique advantages in mediating oral drug delivery; however, many anticancer drugs that were susceptible in hostile gastrointestinal (GI) environment showed poor permeability across intestinal epithelium, and most materials used as drug carriers are nonactive excipients and displayed no therapeutically relevant function, which leads to low oral bioavailability and therapeutic efficacy of anticancer drugs (e.g., paclitaxel). Inspired by these, in this study, paclitaxel (PTX) was used as a model drug, depending on intermolecular hydrogen-bonded interactions, PTX-loaded tannic acid/poly( N-vinylpyrrolidone) nanoparticles (PTX-NP) were produced by a flash nanoprecipitation (FNP) process. The optimized PTX-NP showed an average diameter of 54 nm with a drug encapsulation efficiency of 80% and loading capacity of 14.5%. Molecular dynamics simulations were carried out to illuminate the assembling mechanism of hydrogen-bonded PTX-NP. In vitro and in vivo results confirmed that PTX-NP showed pH-dependent intestinal site-specific drug release, P-gp inhibitory function by tannic acid (TA), prolonged intestinal retention, and improved trans-epithelial transport properties. Oral administration of PTX-NP generated a high oral delivery efficiency and relative oral bioavailability of 25.6% in rats, and further displayed a significant tumor-inhibition effect in a xenograft breast tumor model. These findings confirmed that our PTX-NP might be a promising oral drug formulation for chemotherapy.
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Affiliation(s)
- Zhicheng Le
- School of Materials Science and Engineering, Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, GD Research Center for Functional Biomaterials Engineering and Technology , Sun Yat-sen University , Guangzhou 510275 , China
| | - Yantao Chen
- Shenzhen Key Laboratory of Environmental Chemistry and Ecological Remediation, College of Chemistry and Environmental Engineering , Shenzhen University , Shenzhen 518060 , China
| | - Honghua Han
- Shenzhen Key Laboratory of Environmental Chemistry and Ecological Remediation, College of Chemistry and Environmental Engineering , Shenzhen University , Shenzhen 518060 , China
| | - Houkuan Tian
- School of Materials Science and Engineering, Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, GD Research Center for Functional Biomaterials Engineering and Technology , Sun Yat-sen University , Guangzhou 510275 , China
| | - Pengfei Zhao
- School of Materials Science and Engineering, Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, GD Research Center for Functional Biomaterials Engineering and Technology , Sun Yat-sen University , Guangzhou 510275 , China
| | - Chengbiao Yang
- School of Materials Science and Engineering, Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, GD Research Center for Functional Biomaterials Engineering and Technology , Sun Yat-sen University , Guangzhou 510275 , China
| | - Zhiyu He
- School of Materials Science and Engineering, Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, GD Research Center for Functional Biomaterials Engineering and Technology , Sun Yat-sen University , Guangzhou 510275 , China
| | - Lixin Liu
- School of Materials Science and Engineering, Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, GD Research Center for Functional Biomaterials Engineering and Technology , Sun Yat-sen University , Guangzhou 510275 , China
| | - Kam W Leong
- Department of Biomedical Engineering , Columbia University , New York , New York 10027 , United States
| | - Hai-Quan Mao
- Institute for NanoBioTechnology and Department of Materials Science and Engineering , Johns Hopkins University , Baltimore , Maryland 21218 , United States
- Department of Biomedical Engineering and Translational Tissue Engineering Center , Johns Hopkins University School of Medicine , Baltimore , Maryland 21287 , United States
| | - Zhijia Liu
- School of Materials Science and Engineering, Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, GD Research Center for Functional Biomaterials Engineering and Technology , Sun Yat-sen University , Guangzhou 510275 , China
| | - Yongming Chen
- School of Materials Science and Engineering, Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, GD Research Center for Functional Biomaterials Engineering and Technology , Sun Yat-sen University , Guangzhou 510275 , China
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215
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Zhou L, Fan L, Yi X, Zhou Z, Liu C, Fu R, Dai C, Wang Z, Chen X, Yu P, Chen D, Tan G, Wang Q, Ning C. Soft Conducting Polymer Hydrogels Cross-Linked and Doped by Tannic Acid for Spinal Cord Injury Repair. ACS Nano 2018; 12:10957-10967. [PMID: 30285411 DOI: 10.1021/acsnano.8b04609] [Citation(s) in RCA: 168] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Mimicking soft tissue mechanical properties and the high conductivity required for electrical transmission in the native spinal cord is critical in nerve tissue regeneration scaffold designs. However, fabricating scaffolds of high conductivity, tissue-like mechanical properties, and excellent biocompatibility simultaneously remains a great challenge. Here, a soft, highly conductive, biocompatible conducting polymer hydrogel (CPH) based on a plant-derived polyphenol, tannic acid (TA), cross-linking and doping conducting polypyrrole (PPy) chains is developed to explore its therapeutic efficacy after a spinal cord injury (SCI). The developed hydrogels exhibit an excellent electronic conductivity (0.05-0.18 S/cm) and appropriate mechanical properties (0.3-2.2 kPa), which can be achieved by controlling TA concentration. In vitro, a CPH with a higher conductivity accelerated the differentiation of neural stem cells (NSCs) into neurons while suppressing the development of astrocytes. In vivo, with relatively high conductivity, the CPH can activate endogenous NSC neurogenesis in the lesion area, resulting in significant recovery of locomotor function. Overall, our findings evidence that the CPHs without being combined with any other therapeutic agents have stimulated tissue repair following an SCI and thus have important implications for future biomaterial designs for SCI therapy.
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Affiliation(s)
| | - Lei Fan
- Department of Spine Surgery , The Third Affiliated Hospital of Sun Yat-sen University , Guangzhou 510630 , China
| | | | - Zhengnan Zhou
- School of Chemical Engineering and Light Industry , Guangdong University of Technology , Guangzhou 510006 , China
| | - Can Liu
- Department of Spine Surgery , The Third Affiliated Hospital of Sun Yat-sen University , Guangzhou 510630 , China
| | | | - Cong Dai
- School of Chemical Engineering and Light Industry , Guangdong University of Technology , Guangzhou 510006 , China
| | | | - Xiuxing Chen
- VIP Inpatient Department , Sun Yat-sen University Cancer Center , Guangzhou 510060 , China
| | | | - Dafu Chen
- Laboratory of Bone Tissue Engineering, Beijing Research Institute of Orthopaedics and Traumatology , Beijing JiShuiTan Hospital , Beijing 100035 , China
| | - Guoxin Tan
- School of Chemical Engineering and Light Industry , Guangdong University of Technology , Guangzhou 510006 , China
| | - Qiyou Wang
- Department of Spine Surgery , The Third Affiliated Hospital of Sun Yat-sen University , Guangzhou 510630 , China
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216
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Bartzoka ED, Lange H, Poce G, Crestini C. Stimuli-Responsive Tannin-Fe III Hybrid Microcapsules Demonstrated by the Active Release of an Anti-Tuberculosis Agent. ChemSusChem 2018; 11:3975-3991. [PMID: 30204941 DOI: 10.1002/cssc.201801546] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Revised: 09/10/2018] [Indexed: 05/08/2023]
Abstract
A simple and facile strategy for the creation of ferric tannin microcapsules around a liquid, non-sacrificial core is described. The assembly of the capsules occurs rapidly once ferric tannin complexes are subjected to ultrasonic treatment. The driving forces for the rapid capsule assembly reside in the strategy of adding ferric ions into the initial emulsion, which promotes shell formation and stability through well-known complexation effects. This is the first time that microcapsule assemblies of monomeric tannins like epigallocatechin-3-O-gallate has been demonstrated, which are reportedly unable to form dispersing microcapsules in the absence of a templating metal. The efficacy of the approach is demonstrated by the complete release of a hydrophobic molecule that is active against M. tuberculosis by using Acacia tannin capsules. The release kinetics of the active molecule were of zeroth order over a 12 h time frame.
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Affiliation(s)
- Elisavet D Bartzoka
- University of Rome 'Tor Vergata', Department of Chemical Sciences and Technologies, Via della Ricerca Scientifica, 1, 00133, Rome, Italy
| | - Heiko Lange
- University of Rome 'Tor Vergata', Department of Chemical Sciences and Technologies, Via della Ricerca Scientifica, 1, 00133, Rome, Italy
| | - Giovanna Poce
- Sapienza University of Rome, Department of Chemistry and Technology of Drugs, Piazzale A. Moro, 5, 00185, Rome, Italy
| | - Claudia Crestini
- University of Rome 'Tor Vergata', Department of Chemical Sciences and Technologies, Via della Ricerca Scientifica, 1, 00133, Rome, Italy
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217
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Lee JY, Lim H, Ahn JW, Jang D, Lee SH, Park K, Kim SE. Design of a 3D BMP-2-Delivering Tannylated PCL Scaffold and Its Anti-Oxidant, Anti-Inflammatory, and Osteogenic Effects In Vitro. Int J Mol Sci 2018; 19:E3602. [PMID: 30445673 PMCID: PMC6274927 DOI: 10.3390/ijms19113602] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Revised: 11/05/2018] [Accepted: 11/12/2018] [Indexed: 12/20/2022] Open
Abstract
In this study, a novel three-dimensional (3D) bone morphogenic protein-2 (BMP-2)-delivering tannylated polycaprolactone (PCL) (BMP-2/tannic acid (TA)/PCL) scaffold with anti-oxidant, anti-inflammatory, and osteogenic activities was fabricated via simple surface coating with TA, followed by the immobilization of BMP-2 on the TA-coated PCL scaffold. The BMP-2/TA/PCL scaffold showed controlled and sustained BMP-2 release. It effectively scavenged reactive oxygen species (ROS) in cells, and increased the proliferation of MC3T3-E1 cells pre-treated with hydrogen peroxide (H₂O₂). Additionally, the BMP-2/TA/PCL scaffold significantly suppressed the mRNA levels of pro-inflammatory cytokines, including matrix metalloproteinases-3 (MMP-3), cyclooxygenase-2 (COX-2), interleukin-6 (IL-6), and tumor necrosis factor-α (TNF-α), in lipopolysaccharide (LPS)-induced MC3T3-E1 cells. Furthermore, it showed outstanding enhancement of the osteogenic activity of MC3T3-E1 cells through increased alkaline phosphatase (ALP) activity and calcium deposition. Our findings demonstrated that the BMP-2/TA/PCL scaffold plays an important role in scavenging ROS, suppressing inflammatory response, and enhancing the osteogenic differentiation of cells.
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Affiliation(s)
- Jae Yong Lee
- Department of Orthopedic Surgery and Rare Diseases Institute, Korea University Guro Hospital, Korea University College of Medicine, 148 Guro-dong, Guro-gu, Seoul 08308, Korea.
| | - Hyunwoong Lim
- Department of Industrial Management Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Korea.
| | - Jae Won Ahn
- Department of Systems Biotechnology, Chung-Ang University, Anseong, Gyeonggi-do 17546, Korea.
| | - Dongsik Jang
- Department of Industrial Management Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Korea.
| | - Seung Hee Lee
- Department of Nursing, Inha University, 100 Inha-ro, Michuhol-gu, Incheon 22212, Korea.
| | - Kyeongsoon Park
- Department of Systems Biotechnology, Chung-Ang University, Anseong, Gyeonggi-do 17546, Korea.
| | - Sung Eun Kim
- Department of Orthopedic Surgery and Rare Diseases Institute, Korea University Guro Hospital, Korea University College of Medicine, 148 Guro-dong, Guro-gu, Seoul 08308, Korea.
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218
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Ryu B, Jiang Y, Kim HS, Hyun JM, Lim SB, Li Y, Jeon YJ. Ishophloroglucin A, a Novel Phlorotannin for Standardizing the Anti-α-Glucosidase Activity of Ishige okamurae. Mar Drugs 2018; 16:E436. [PMID: 30413003 PMCID: PMC6266998 DOI: 10.3390/md16110436] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Revised: 10/29/2018] [Accepted: 10/31/2018] [Indexed: 01/15/2023] Open
Abstract
Nutraceutical use of algae requires understanding of the diversity and significance of their active compositions for intended activities. Ishige okamurae (I. okamurae) extract is well-known to possess α-glucosidase inhibitory activity; however, studies are needed to investigate its active composition in order to standardize its α-glucosidase inhibitory activity. In this study, we observed the intensity of the dominant compounds of each I. okamurae extract harvested between 2016 and 2017, and the different potency of each I. okamurae extract against α-glucosidase. By comparing the anti-α-glucosidase ability of the dominant compounds, a novel Ishophloroglucin A with highest α-glucosidase inhibitory activity was identified and suggested for standardization of anti-α-glucosidase activity in I. okamurae extract. Additionally, a validated analytical method for measurement of Ishophloroglucin A for future standardization of I. okamurae extract was established in this study. We suggest using Ishophloroglucin A to standardize anti-α-glucosidase potency of I. okamurae and propose the significance of standardization based on their composition for effective use of algae as marine-derived nutraceuticals.
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Affiliation(s)
- BoMi Ryu
- Department of Marine Life Science, Jeju National University, Jeju 63243, Korea.
| | - Yunfei Jiang
- Department of Marine Life Science, Jeju National University, Jeju 63243, Korea.
| | - Hyun-Soo Kim
- Department of Marine Life Science, Jeju National University, Jeju 63243, Korea.
| | - Jee-Min Hyun
- Department of Marine Life Science, Jeju National University, Jeju 63243, Korea.
| | - Sang-Bin Lim
- Department of Food Bioengineering, Jeju National University, Jeju 63243, Korea.
| | - Yong Li
- Department of Pharmaceutical Sciences, Changchun University of Chinese Medicine, 1035 Boshuo Road, Jing Yue Economic Development Zone, Chanchun 130117, China.
| | - You-Jin Jeon
- Department of Marine Life Science, Jeju National University, Jeju 63243, Korea.
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219
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Ali SS, Zia MK, Siddiqui T, Khan FH. Binding interaction of sheep alpha-2-macroglobulin and tannic acid: A spectroscopic and thermodynamic study. Spectrochim Acta A Mol Biomol Spectrosc 2018; 204:748-753. [PMID: 30007881 DOI: 10.1016/j.saa.2018.06.024] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2018] [Revised: 05/28/2018] [Accepted: 06/07/2018] [Indexed: 06/08/2023]
Abstract
Tannic acid is a polyphenol found in plant species commonly consumed by ruminants. It works as an important molecule in plant defense system to fight against environmental stressors. Tannic acid has number of effects on animals and humans. An attempt has been made to study the interaction of tannic acid with alpha-2-macroglobulin (α2M). α2M is a large tetrameric glycoprotein which function as a key serum anti-proteinase under physiological conditions. In the present study we explored the tannic acid-α2M interaction by number of spectroscopic techniques such as UV, fluorescence, CD and FTIR along with isothermal titration calorimetry. CD and FT-IR spectroscopy were mainly used to study the secondary structural change induced in the antiproteinase. Analysis of activity shows the antiproteolytic potential of protein was compromised. Data of UV spectroscopy shows formation of α2M-tannic acid complex. The thermodynamic signatures of this interaction reveals hydrogen bonding played a major role in the binding of α2M-tannic acid. Analysis of CD and FTIR results suggest a minor conformational change in α2M on tannic acid binding. Overall, tannic acid induces subtle conformation change in α2M structure resulting the loss of its proteinase inhibitory activity.
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Affiliation(s)
- Syed Saqib Ali
- Department of Biochemistry, Faculty of Life Science, Aligarh Muslim University, Aligarh 202002, India
| | - Mohammad Khalid Zia
- Department of Biochemistry, Faculty of Life Science, Aligarh Muslim University, Aligarh 202002, India
| | - Tooba Siddiqui
- Department of Biochemistry, Faculty of Life Science, Aligarh Muslim University, Aligarh 202002, India
| | - Fahim Halim Khan
- Department of Biochemistry, Faculty of Life Science, Aligarh Muslim University, Aligarh 202002, India.
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220
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Barbosa M, Lopes G, Valentão P, Ferreres F, Gil-Izquierdo Á, Pereira DM, Andrade PB. Edible seaweeds' phlorotannins in allergy: A natural multi-target approach. Food Chem 2018; 265:233-241. [PMID: 29884379 DOI: 10.1016/j.foodchem.2018.05.074] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Revised: 04/13/2018] [Accepted: 05/16/2018] [Indexed: 12/11/2022]
Abstract
The anti-allergenicity of phlorotannin-targeted extracts from four edible seaweed species of Fucus genus was evaluated herein for the first time. Extracts were able to act upon cellular events triggered by immunological reaction (IgE/antigen), and on cellular events downstream the Ca2+ influx caused by a chemical stimulus (calcium ionophore A23187), preventing degranulation of RBL-2H3 cells. Furthermore, a dose-dependent behaviour towards allergy-related enzymatic systems was observed for all the phlorotannin extracts. Linear correlations were found between reduction of the allergic mediators released and the total phlorotannin content, as well as between the enzyme inhibition and the amount of phlorotannins in the extracts. These results point to a multi-target anti-allergic capacity of phlorotannin-targeted extracts, which displayed effects on different critical steps of the allergic response, contributing to the valorisation of Fucus spp. both as food and for nutraceutical applications.
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Affiliation(s)
- Mariana Barbosa
- REQUIMTE/LAQV, Laboratório de Farmacognosia, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, Rua de Jorge Viterbo Ferreira 228, 4050-313 Porto, Portugal
| | - Graciliana Lopes
- REQUIMTE/LAQV, Laboratório de Farmacognosia, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, Rua de Jorge Viterbo Ferreira 228, 4050-313 Porto, Portugal
| | - Patrícia Valentão
- REQUIMTE/LAQV, Laboratório de Farmacognosia, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, Rua de Jorge Viterbo Ferreira 228, 4050-313 Porto, Portugal
| | - Federico Ferreres
- Research Group on Quality, Safety and Bioactivity of Plant Foods, Department of Food Science and Technology, CEBAS (CSIC), P.O. Box 164, 30100 Campus University Espinardo, Murcia, Spain
| | - Ángel Gil-Izquierdo
- Research Group on Quality, Safety and Bioactivity of Plant Foods, Department of Food Science and Technology, CEBAS (CSIC), P.O. Box 164, 30100 Campus University Espinardo, Murcia, Spain
| | - David M Pereira
- REQUIMTE/LAQV, Laboratório de Farmacognosia, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, Rua de Jorge Viterbo Ferreira 228, 4050-313 Porto, Portugal
| | - Paula B Andrade
- REQUIMTE/LAQV, Laboratório de Farmacognosia, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, Rua de Jorge Viterbo Ferreira 228, 4050-313 Porto, Portugal.
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Adejoro FA, Hassen A, Thantsha MS. Preparation of acacia tannin loaded lipid microparticles by solid-in-oil-in-water and melt dispersion methods, their characterization and evaluation of their effect on ruminal gas production In Vitro. PLoS One 2018; 13:e0206241. [PMID: 30359451 PMCID: PMC6201938 DOI: 10.1371/journal.pone.0206241] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Accepted: 10/09/2018] [Indexed: 11/23/2022] Open
Abstract
Tannin extracts have wide biological activity in ruminant nutrition. The possibility of masking their bitter taste and enhancing sustained release in the rumen can be achieved through encapsulation. The objectives of this study were to prepare an encapsulated Acacia tannin extract (ATE) suitable for ruminants using the solid-in-oil-in-water (S/O/W) method, and to evaluate the microparticles in terms of morphology, encapsulation efficiency and in vitro release under varying pH. Subsequently, the effect of the microparticles on rumen in vitro gas and methane production would be evaluated. Lipid microparticles were prepared using the double emulsion process with palm oil and lard, dichloromethane, and Tween80/Span80 emulsifiers. The microparticles produced by S/O/W emulsion tended to be smaller (P = 0.06), and had greater encapsulation efficiency compared with those produced by the melt dispersion method. Scanning electron micrographs showed microparticles had stable cylindrical and spherical shapes, with mean size of 34± 10.2 μm. Maximum encapsulation efficiencies of 78.6% and 80.1% were obtained with lard and palm oil as lipid wall materials, respectively, even under high core material loading percentage of 80%. Wall material type did not affect the characteristics of microparticles. In acetate buffer, only about 20% of tannin was released from the lipid-encapsulated microparticles into buffer media after 24 hours. In contrast, about 90% of the tannin had been released into solution before eight hours in the crude extract. Lipid-encapsulated ATE reduced rumen gas and methane production in vitro (P ˂0.05) in both Eragrostis and total mixed ration (TMR) diet substrates, but the magnitude of reduction was lower than that obtained when unencapsulated ATE was the additive (10% vs 20% for total gas and 17% vs 24% for methane). Crude ATE and palm oil encapsulated ATE reduced the concentration of methane in sampled gas (P = 0.054) when fermenting the TMR substrate, but this effect was not observed in the Eragrostis substrate. Ammonia nitrogen concentration was greater in encapsulated ATE compared with the crude ATE (P ˂0.001). These results show that the lipid-encapsulated ATE produced small-sized and more uniform microparticles, with high encapsulation efficiency compared with microparticles prepared by melt dispersion. Encapsulation of ATE enhanced the sustained release of tannin in the rumen, and with the potential to improve gas production and reduce methane production.
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Affiliation(s)
- Festus A. Adejoro
- Department of Animal and Wildlife Sciences, University of Pretoria, Pretoria, South Africa
| | - Abubeker Hassen
- Department of Animal and Wildlife Sciences, University of Pretoria, Pretoria, South Africa
| | - Mapitsi S. Thantsha
- Department of Biochemistry, Genetics and Microbiology, University of Pretoria, Pretoria, South Africa
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Chen C, Chen G, Wan P, Chen D, Zhu T, Hu B, Sun Y, Zeng X. Characterization of Bovine Serum Albumin and (-)-Epigallocatechin Gallate/3,4- O-Dicaffeoylquinic Acid/Tannic Acid Layer by Layer Assembled Microcapsule for Protecting Immunoglobulin G in Stomach Digestion and Release in Small Intestinal Tract. J Agric Food Chem 2018; 66:11141-11150. [PMID: 30277397 DOI: 10.1021/acs.jafc.8b04381] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The protein-polyphenol layer by layer (LbL) assembled polymer composite microcapsule is a considerable delivery system that can be used to improve the bioactive stability and effectiveness of natural compounds in various applications. In the present study, three kinds of polyphenols were loaded in the sequence of (-)-epigallocatechin gallate (EGCG), 3,4- O-dicaffeoylquinic acid (3,4-diCQA), and tannin acid (TA) to prepare a BSA-polyphenol LbL membrane. The composition of IgG-(BSA-EGCG/3,4-diCQA/TA) n microcapsules and their stability and releasing ability in the gastrointestinal tract were evaluated. In addition, by binding of these three kinds of polyphenols to BSA, the thermal denaturation temperature and ordered secondary structure of the BSA-polyphenol microcapsules were increased, and the time of scavenging activity on 2,2'-azinobis(3-ethylbenzothiazolin-6-sulfonic acid) free radicals was significantly prolonged. These findings suggest that (BSA-EGCG/3,4-diCQA/TA) n microcapsules can not only protect IgG in food processing and stomach digestion but also release it in the small intestinal tract for bioactive delivery.
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Affiliation(s)
- Chunxu Chen
- College of Food Science and Technology , Nanjing Agricultural University , Nanjing 210095 , Jiangsu , People's Republic of China
- College of Food Engineering , Anhui Science and Technology University , Fengyang 233100 , Anhui , People's Republic of China
| | - Guijie Chen
- College of Food Science and Technology , Nanjing Agricultural University , Nanjing 210095 , Jiangsu , People's Republic of China
| | - Peng Wan
- College of Food Science and Technology , Nanjing Agricultural University , Nanjing 210095 , Jiangsu , People's Republic of China
| | - Dan Chen
- College of Food Science and Technology , Nanjing Agricultural University , Nanjing 210095 , Jiangsu , People's Republic of China
| | - Tao Zhu
- National Laboratory of Solid State Microstructures and Department of Physics, Collaborative Innovation Center of Advanced Microstructures , Nanjing University , Nanjing 210093 , People's Republic of China
| | - Bing Hu
- College of Food Science and Technology , Nanjing Agricultural University , Nanjing 210095 , Jiangsu , People's Republic of China
| | - Yi Sun
- College of Food Science and Technology , Nanjing Agricultural University , Nanjing 210095 , Jiangsu , People's Republic of China
| | - Xiaoxiong Zeng
- College of Food Science and Technology , Nanjing Agricultural University , Nanjing 210095 , Jiangsu , People's Republic of China
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223
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Nisar MF, He J, Ahmed A, Yang Y, Li M, Wan C. Chemical Components and Biological Activities of the Genus Phyllanthus: A Review of the Recent Literature. Molecules 2018; 23:molecules23102567. [PMID: 30297661 PMCID: PMC6222918 DOI: 10.3390/molecules23102567] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Revised: 10/02/2018] [Accepted: 10/03/2018] [Indexed: 02/06/2023] Open
Abstract
Medicinal plants have served humans since prehistoric times to treat various ailments. Both developed and underdeveloped countries rely on traditional systems of medication using natural sources from plants. Phyllanthus is one of the largest genus in the family Phyllanthaceae, comprising over 700 well known species cosmopolitan in distribution mainly in the tropics and subtropics. Phyllanthus species are being in constant used in traditional medications to cure an array of human diseases (constipation, inhalation related, arthritis, loss of appetite, injuries, conjunctivitis, diarrhoea, running nose, common cold, malaria, blennorrhagia, colic, diabetes mellitus, dysentery, indigestion, fever, gout, gonorrheal diseases of males and females, skin itching, jaundice, hepatic disorders, leucorrhea, vaginitis, menstrual irregularities, obesity, stomach pains, and tumors), confectionaries, food industry, and in some pesticides. Phyllanthus species are rich in diversity of phytochemicals e.g., tannins, terpenes, alkaloids, glycosidic compounds, saponins, and flavones etc. More in depth studies are a direly needed to identify more compounds with specific cellular functions to treat various ailments.
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Affiliation(s)
- Muhammad Farrukh Nisar
- Interdisciplinary Research Centre in Biomedical Materials (IRCBM), COMSATS University Islamabad, Lahore Campus, Lahore 54000, Pakistan.
| | - Junwei He
- Research Center of Natural Resources of Chinese Medicinal Materials and Ethnic Medicine, Jiangxi University of Traditional Chinese Medicine, Nanchang 330004, China.
| | - Arsalan Ahmed
- Interdisciplinary Research Centre in Biomedical Materials (IRCBM), COMSATS University Islamabad, Lahore Campus, Lahore 54000, Pakistan.
| | - Youxin Yang
- Jiangxi Key Laboratory for Postharvest Technology and Nondestructive Testing of Fruits & Vegetables, Collaborative Innovation Center of Post-Harvest Key Technology and Quality Safety of Fruits and Vegetables, College of Agronomy, Jiangxi Agricultural University, Nanchang 330045, China.
| | - Mingxi Li
- Jiangxi Key Laboratory for Postharvest Technology and Nondestructive Testing of Fruits & Vegetables, Collaborative Innovation Center of Post-Harvest Key Technology and Quality Safety of Fruits and Vegetables, College of Agronomy, Jiangxi Agricultural University, Nanchang 330045, China.
| | - Chunpeng Wan
- Jiangxi Key Laboratory for Postharvest Technology and Nondestructive Testing of Fruits & Vegetables, Collaborative Innovation Center of Post-Harvest Key Technology and Quality Safety of Fruits and Vegetables, College of Agronomy, Jiangxi Agricultural University, Nanchang 330045, China.
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Abstract
Natural polymers are widely used in biomedical applications because of their numerous effects. Especially, plant-derived natural polymers extracted from cell walls, especially wood, which is abundant, inexpensive and nontoxic to cells, have high mechanical strength to retain their turgor pressure. Plant-derived polymers are also unaffected by enzymes present in the human body, having a strong possibility to create a polymeric structure that releases drugs only exactly where needed. Therefore, plant-derived polymers are suitable for use in drug delivery systems (DDS) as they have durability with few drug leakage issues in the body. Here, to improve drug incorporation and release efficiency, we prepared a multilayer nanofilm from tannic acid (TA) and lignin extracted from plants and wood. We used a strategy involving film degradation by tannase and laccase, which are not present in humans, to depolymerize TA and lignin, respectively. The TA and lignin film was highly stable for 7 days at pH 3-7 and was readily degraded after enzyme treatment. We also observed controllable drug release and anticancer effect from the TA and lignin hollow carriers depending on enzymatic activity. By taking advantage of plant-derived polymers and non-toxic enzymatic reactions, we have demonstrated the film growth and degradation mechanism in depth and explored their use in a smart DDS with easily controlled release kinetics, which is useful as a DDS platform.
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Affiliation(s)
- Daheui Choi
- Department of Chemical and Biomolecular Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea.
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Arismendi WA, Ortiz-Ardila AE, Delgado CV, Lugo L, Sequeda-Castañeda LG, Celis-Zambrano CA. Modified tannins and their application in wastewater treatment. Water Sci Technol 2018; 78:1115-1128. [PMID: 30339536 DOI: 10.2166/wst.2018.336] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The bio-flocculants used in this study were synthesised by the Mannich reaction, which includes three reagents: a substrate (tannin extracts of Acacia, Quebracho, and Castanea), formaldehyde, and an amine derivative (ethanolamine, diethanolamine, ammonium chloride). Nine natural flocculants were prepared by combining extracts and amines; these products were evaluated in three different wastewater samples in two experimental phases. In phase I, five physicochemical parameters were analysed. From the data obtained, a multivariate, completely randomised design (CRD-Manava) was used, with a factorial arrangement and mean plots. In phase II, the three bio-flocculants with the most statistically significant responses and their mixtures were examined, evaluating 14 biological and physicochemical parameters. Statistical analysis was guided in this phase by CRD blocks, finding a significant removal in the physicochemical parameters analysed in the different types of wastewater and obtaining removal rates between 50 and 90%, depending on the parameter. At the end of both phases, the bio-flocculants acacia-ammonium chloride and quebracho-diethanolamine were the most efficient in the removal of turbidity (34-99%), true colour (93-100%) and total solids (12-99%). In addition, the natural flocculants showed low mutagenicity index (MI: 0.33-0.93) compared to aluminium sulphate (MI: 4.87-8.81).
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Affiliation(s)
- W A Arismendi
- Environmental Sciences Centre EULA, Environmental Sciences Faculty, EULA, Universidad de Concepción, Casilla 160-C, Concepción, Chile
| | - Andrés E Ortiz-Ardila
- Civil Engineering Faculty, Hydraulic & Environmental Engineering Department, Pontificia Universidad Católica de Chile, Avda. Libertador Bernardo O'Higgins 340, Santiago, Chile
| | - C V Delgado
- Pontificia Universidad Javeriana Bogotá, Chemistry Department, Science Faculty, 7th Street # 40-62, Bogotá D.C., Colombia E-mail:
| | - Lorena Lugo
- Pontificia Universidad Javeriana Bogotá, Chemistry Department, Science Faculty, 7th Street # 40-62, Bogotá D.C., Colombia E-mail:
| | - Luis G Sequeda-Castañeda
- Pontificia Universidad Javeriana Bogotá, Chemistry Department, Science Faculty, 7th Street # 40-62, Bogotá D.C., Colombia E-mail:
| | - Crispín A Celis-Zambrano
- Pontificia Universidad Javeriana Bogotá, Chemistry Department, Science Faculty, 7th Street # 40-62, Bogotá D.C., Colombia E-mail:
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226
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Lin CJ, Liu CH, Wang JY, Lin CC, Li YF, Richardson CD, Lin LT. Small molecules targeting coxsackievirus A16 capsid inactivate viral particles and prevent viral binding. Emerg Microbes Infect 2018; 7:162. [PMID: 30254193 PMCID: PMC6156566 DOI: 10.1038/s41426-018-0165-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2018] [Revised: 08/29/2018] [Accepted: 08/29/2018] [Indexed: 01/13/2023]
Abstract
Coxsackievirus A16 (CVA16) is an etiologic agent of hand, foot, and mouth disease (HFMD) that affects young children, and although typically self-limited, severe complications, and fatal cases have been reported. Due to the lack of specific medication and vaccines against CVA16, there is currently a need to develop effective antivirals to better control CVA16 infections in epidemic areas. In this study, we identified the tannins chebulagic acid (CHLA) and punicalagin (PUG) as small molecules that can efficiently disrupt the CVA16 infection of human rhabdomyosarcoma cells. Both compounds significantly reduced CVA16 infectivity at micromolar concentrations without apparent cytotoxicity. A mechanistic analysis revealed that the tannins particularly targeted the CVA16 entry phase by inactivating cell-free viral particles and inhibiting viral binding. Further examination by molecular docking analysis pinpointed the targets of the tannins in the fivefold axis canyon region of the CVA16 capsid near the pocket entrance that functions in cell surface receptor binding. We suggest that CHLA and PUG are efficient antagonists of CVA16 entry and could be of value as antiviral candidates or as starting points for developing molecules to treat CVA16 infections.
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Affiliation(s)
- Chien-Ju Lin
- School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, 80708, Taiwan
| | - Ching-Hsuan Liu
- Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei, 11031, Taiwan
- Department of Microbiology and Immunology, Dalhousie University, Halifax, Nova Scotia, B3H 4R2, Canada
| | - Jonathan Y Wang
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Chun-Ching Lin
- School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, 80708, Taiwan
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, 80708, Taiwan
| | - Yi-Fang Li
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, 80708, Taiwan
| | - Christopher D Richardson
- Department of Microbiology and Immunology, Dalhousie University, Halifax, Nova Scotia, B3H 4R2, Canada
- Department of Pediatrics and Canadian Center for Vaccinology, Izaak Walton Killam Health Centre, Halifax, Nova Scotia, B3K 6R8, Canada
| | - Liang-Tzung Lin
- Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei, 11031, Taiwan.
- Department of Microbiology and Immunology, School of Medicine, College of Medicine, , Taipei Medical University, Taipei, 11031, Taiwan.
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227
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Li N, Yang X, Liu W, Xi G, Wang M, Liang B, Ma Z, Feng Y, Chen H, Shi C. Tannic Acid Cross-linked Polysaccharide-Based Multifunctional Hemostatic Microparticles for the Regulation of Rapid Wound Healing. Macromol Biosci 2018; 18:e1800209. [PMID: 30238611 DOI: 10.1002/mabi.201800209] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Revised: 07/26/2018] [Indexed: 12/20/2022]
Abstract
Hemostatic microparticles (HMs) have been widely used in surgery. To improve the comprehensive performance of HMs, multifunctional HMs named HM15 and HM15 ' are prepared from starch, carboxymethyl chitosan, hyaluronic acid, and tannic acid. Herein, tannic acid is used as an effective cross-linker. A 3D network structure for cell growth and wound repair can be formed by secondary cross-linking. Through synergistic effect of these natural materials, the process of wound healing can be regulated controllably. HM15 and HM15 ' have the ability of rapid hemostasis. Moreover, HM15 ' shows excellent properties in antibacteria and wound healing acceleration. Blood clotting time treated with different HMs is shortened obviously from 436.8 s to 126 s. Compared with Celox, HM15 and HM15 ' exhibited better broad spectrum antibacterial activity against both Escherichia coli and Staphylococcus aureus. Notably, the wound can be repaired rapidly by HM15 ' in 14 days. These multifunctional HMs might have an important prospect in clinical application.
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Affiliation(s)
- Na Li
- Wenzhou Institute of Biomaterials and Engineering, Ningbo Institute of Industrial Tehcnology (CNITECH), Chinese Academy of Sciences (CAS), Wenzhou, Zhejiang, 325011, China
- School of Ophthalmology and Optometry, Eye Hospital, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou, Zhejiang, 325027, China
- Engineering Research Center of Clinical Functional Materials and Diagnosis & Treatment Devices of Zhejiang Province, Wenzhou Institute of Biomaterials and Engineering, Chinese Academy of Sciences (CAS), Wenzhou, Zhejiang, 325011, China
| | - Xiao Yang
- Wenzhou Institute of Biomaterials and Engineering, Ningbo Institute of Industrial Tehcnology (CNITECH), Chinese Academy of Sciences (CAS), Wenzhou, Zhejiang, 325011, China
- School of Ophthalmology and Optometry, Eye Hospital, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou, Zhejiang, 325027, China
- Engineering Research Center of Clinical Functional Materials and Diagnosis & Treatment Devices of Zhejiang Province, Wenzhou Institute of Biomaterials and Engineering, Chinese Academy of Sciences (CAS), Wenzhou, Zhejiang, 325011, China
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, China
| | - Wen Liu
- Wenzhou Institute of Biomaterials and Engineering, Ningbo Institute of Industrial Tehcnology (CNITECH), Chinese Academy of Sciences (CAS), Wenzhou, Zhejiang, 325011, China
- School of Ophthalmology and Optometry, Eye Hospital, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou, Zhejiang, 325027, China
- Engineering Research Center of Clinical Functional Materials and Diagnosis & Treatment Devices of Zhejiang Province, Wenzhou Institute of Biomaterials and Engineering, Chinese Academy of Sciences (CAS), Wenzhou, Zhejiang, 325011, China
| | - Guanghui Xi
- Wenzhou Institute of Biomaterials and Engineering, Ningbo Institute of Industrial Tehcnology (CNITECH), Chinese Academy of Sciences (CAS), Wenzhou, Zhejiang, 325011, China
- School of Ophthalmology and Optometry, Eye Hospital, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou, Zhejiang, 325027, China
- Engineering Research Center of Clinical Functional Materials and Diagnosis & Treatment Devices of Zhejiang Province, Wenzhou Institute of Biomaterials and Engineering, Chinese Academy of Sciences (CAS), Wenzhou, Zhejiang, 325011, China
| | - Mingshan Wang
- The First Affiliated Hospital of Wenzhou Medical University, Wenzhou Medical University, Wenzhou, Zhejiang, 325000, China
| | - Bin Liang
- The First Affiliated Hospital of Wenzhou Medical University, Wenzhou Medical University, Wenzhou, Zhejiang, 325000, China
| | - Zhaipu Ma
- College of Life Sciences, Hebei University, Baoding, Hebei, 071002, China
| | - Yakai Feng
- Wenzhou Institute of Biomaterials and Engineering, Ningbo Institute of Industrial Tehcnology (CNITECH), Chinese Academy of Sciences (CAS), Wenzhou, Zhejiang, 325011, China
- School of Ophthalmology and Optometry, Eye Hospital, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou, Zhejiang, 325027, China
- Engineering Research Center of Clinical Functional Materials and Diagnosis & Treatment Devices of Zhejiang Province, Wenzhou Institute of Biomaterials and Engineering, Chinese Academy of Sciences (CAS), Wenzhou, Zhejiang, 325011, China
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, China
| | - Hao Chen
- Wenzhou Institute of Biomaterials and Engineering, Ningbo Institute of Industrial Tehcnology (CNITECH), Chinese Academy of Sciences (CAS), Wenzhou, Zhejiang, 325011, China
- School of Ophthalmology and Optometry, Eye Hospital, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou, Zhejiang, 325027, China
- Engineering Research Center of Clinical Functional Materials and Diagnosis & Treatment Devices of Zhejiang Province, Wenzhou Institute of Biomaterials and Engineering, Chinese Academy of Sciences (CAS), Wenzhou, Zhejiang, 325011, China
| | - Changcan Shi
- Wenzhou Institute of Biomaterials and Engineering, Ningbo Institute of Industrial Tehcnology (CNITECH), Chinese Academy of Sciences (CAS), Wenzhou, Zhejiang, 325011, China
- School of Ophthalmology and Optometry, Eye Hospital, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou, Zhejiang, 325027, China
- Engineering Research Center of Clinical Functional Materials and Diagnosis & Treatment Devices of Zhejiang Province, Wenzhou Institute of Biomaterials and Engineering, Chinese Academy of Sciences (CAS), Wenzhou, Zhejiang, 325011, China
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228
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Esmaeili N, Salimi A, Zohuriaan-Mehr MJ, Vafayan M, Meyer W. Bio-based thermosetting epoxy foam: Tannic acid valorization toward dye-decontaminating and thermo-protecting applications. J Hazard Mater 2018; 357:30-39. [PMID: 29859462 DOI: 10.1016/j.jhazmat.2018.05.045] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Revised: 05/16/2018] [Accepted: 05/22/2018] [Indexed: 06/08/2023]
Abstract
Bio-resourced thermosetting epoxy foam was synthesized from tannic acid toward two different applications e.g., dye-decontaminating and thermo-insulating. Epoxidized tannic acid (ETA) foam was produced without using of organic volatile compounds or flammable foaming gases. The foam density, thermal conductivity and closed-cell content were studied. Besides, TGA showed high char yield (49% in N2 and 48.3% in air) at 600 °C accompanied by high LOI (37.1 in N2 and 36.8 in air). The high thermo-stability and intumescent char yield along with low thermal conductivity recommends the foam suitability for being used as an insulating material. Additionally, sorption of methylene blue onto ETA foam was kinetically investigated. The study of contact time, ionic strength, solution pH, initial sorbate concentration and desorption revealed the dependency of the sorption process to pH and initial sorbate concentration. The experimental data fitted well with the Langmuir isotherm (R2 = 0.997), yielding maximum sorption capacity of 36.25 mg/g (ETA foam = 0.05 g, pH = 7, MB concentration = 50 ppm, Volume = 25 mL). The kinetic data verified that MB sorption could be represented by the pseudo second-order model. Overall, the ETA foam can be introduced as a candidate for removing cationic pollutants, thermal insulator, and self-extinguishing/intumescent materials.
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Affiliation(s)
- N Esmaeili
- Department of Functional Polymer Systems, Fraunhofer Institute for Applied Polymer Research (IAP), Geiselbergstraße 68, 14476, Potsdam-Golm, Germany; Adhesive and Resin Department, Polymer Processing Faculty, Iran Polymer and Petrochemical Institute (IPPI), PO Box 14965-115, Tehran, Iran; Bio-based Monomers & Polymers Division (BIOBASED Division), Iran Polymer and Petrochemical Institute (IPPI), PO Box 14965-115, Tehran, Iran
| | - A Salimi
- Adhesive and Resin Department, Polymer Processing Faculty, Iran Polymer and Petrochemical Institute (IPPI), PO Box 14965-115, Tehran, Iran.
| | - M J Zohuriaan-Mehr
- Adhesive and Resin Department, Polymer Processing Faculty, Iran Polymer and Petrochemical Institute (IPPI), PO Box 14965-115, Tehran, Iran; Bio-based Monomers & Polymers Division (BIOBASED Division), Iran Polymer and Petrochemical Institute (IPPI), PO Box 14965-115, Tehran, Iran
| | - M Vafayan
- Adhesive and Resin Department, Polymer Processing Faculty, Iran Polymer and Petrochemical Institute (IPPI), PO Box 14965-115, Tehran, Iran
| | - W Meyer
- Department of Functional Polymer Systems, Fraunhofer Institute for Applied Polymer Research (IAP), Geiselbergstraße 68, 14476, Potsdam-Golm, Germany.
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229
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Salminen JP. Two-Dimensional Tannin Fingerprints by Liquid Chromatography Tandem Mass Spectrometry Offer a New Dimension to Plant Tannin Analyses and Help To Visualize the Tannin Diversity in Plants. J Agric Food Chem 2018; 66:9162-9171. [PMID: 30136834 PMCID: PMC6203188 DOI: 10.1021/acs.jafc.8b02115] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Tannins are large-molecular-weight plant polyphenols that are produced in fruits, berries, leaves, flowers, seeds, stems, and roots of woody and non-woody plants. Hundreds and thousands of individual tannin structures are consequently found in many kinds of natural food and feed products. The huge structural variability in tannins is reflected as vast bioactivity differences between them but not in the accuracy of their typical analysis methods. Here, I show how the modern liquid chromatography mass spectrometry methods can be used to obtain new types of two-dimensional tannin fingerprints to better visualize both the tannin content and diversity in plants with just one 10 min analysis per sample.
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230
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Naumann H, Sepela R, Rezaire A, Masih SE, Zeller WE, Reinhardt LA, Robe JT, Sullivan ML, Hagerman AE. Relationships between Structures of Condensed Tannins from Texas Legumes and Methane Production During In Vitro Rumen Digestion. Molecules 2018; 23:E2123. [PMID: 30142930 PMCID: PMC6225215 DOI: 10.3390/molecules23092123] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Revised: 08/14/2018] [Accepted: 08/21/2018] [Indexed: 11/24/2022] Open
Abstract
Previous studies showed that a series of purified condensed tannins (CTs) from warm-season perennial legumes exhibited high variability in their modulation of methane production during in vitro rumen digestion. The molecular weight differences between these CTs did not provide correlation with either the in vitro CH₄ production or the ability to precipitate bovine serum albumin. In an effort to delineate other structure-activity relationships from these methane abatement experiments, the structures of purified CTs from these legumes were assessed with a combination of methanolysis, quantitative thiolysis, ¹H-13C HSQC NMR spectroscopy and ultrahigh-resolution MALDI-TOF MS. The composition of these CTs is very diverse: procyanidin/prodelphinidin (PC/PD) ratios ranged from 98/2 to 2/98; cis/trans ratios ranged from 98/2 to 34/66; mean degrees of polymerization ranged from 6 to 39; and % galloylation ranged from 0 to 75%. No strong correlation was observed between methane production and the protein precipitation capabilities of the CT towards three different proteins (BSA, lysozyme, and alfalfa leaf protein) at ruminal pH. However, a strong non-linear correlation was observed for the inhibition of methane production versus the antioxidant activity in plant sample containing typical PC- and PD-type CTs. The modulation of methane production could not be correlated to the CT structure (PC/PD or cis/trans ratios and extent of galloylation). The most active plant in methane abatement was Acacia angustissima, which contained CT, presenting an unusual challenge as it was resistant to standard thiolytic degradation conditions and exhibited an atypical set of cross-peak signals in the 2D NMR. The MALDI analysis supported a 5-deoxy flavan-3-ol-based structure for the CT from this plant.
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Affiliation(s)
- Harley Naumann
- Division of Plant Sciences, University of Missouri, 110 Waters, Columbia, MO 65211, USA.
| | - Rebecka Sepela
- Department of Chemistry & Biochemistry, Miami University, Oxford, OH 45056, USA.
| | - Aira Rezaire
- Department of Chemistry & Biochemistry, Miami University, Oxford, OH 45056, USA.
| | - Sonia E Masih
- Department of Chemistry & Biochemistry, Miami University, Oxford, OH 45056, USA.
| | - Wayne E Zeller
- USDA-ARS, U.S. Dairy Forage Research Center, Madison, WI 53706, USA.
| | | | - Jamison T Robe
- USDA-ARS, U.S. Dairy Forage Research Center, Madison, WI 53706, USA.
| | | | - Ann E Hagerman
- Department of Chemistry & Biochemistry, Miami University, Oxford, OH 45056, USA.
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Bian H, Sun B, Cui J, Ren S, Lin T, Feng Y, Jia S. Bienzyme Magnetic Nanobiocatalyst with Fe 3+-Tannic Acid Film for One-Pot Starch Hydrolysis. J Agric Food Chem 2018; 66:8753-8760. [PMID: 30052438 DOI: 10.1021/acs.jafc.8b02097] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
In this study, a novel co-immobilization biocatalyst for one-pot starch hydrolysis was prepared through shielding enzymes on the Fe3O4/SiO2 core-shell nanospheres by a Fe3+-tannic acid (TA) film. In brief, α-amylase and glucoamylase were covalently immobilized on amino-modified Fe3O4/SiO2 core-shell nanospheres using glutarldehyde as a linker. Then, a Fe3+-TA protective film was formed through the self-assembly of the Fe3+ and TA coordination complex (Fe3+-TA@Fe3O4/SiO2-enzymes). The film acts a "coating" to prevent the enzyme from denaturation and detachment, thus significantly improving its structural and operational stability. Furthermore, the immobilization efficiency reached 90%, and the maximum activity recovery of α-amylase and glucoamylase was 87 and 85%, respectively. More importantly, the bienzyme magnetic nanobiocatalyst with Fe3+-TA film could be simply recovered by a magnet. The Fe3+-TA@Fe3O4/SiO2-enzymes kept 55% of the original activity after reuse for 9 cycles, indicating outstanding reusability. However, the bienzyme magnetic nanobiocatalyst without Fe3+-TA film maintained 28% of the initial activity.
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Affiliation(s)
- Hongjie Bian
- Research Center for Fermentation Engineering of Hebei, College of Bioscience and Bioengineering , Hebei University of Science and Technology , 26 Yuxiang Street , Shijiazhang , Hebei 050000 , People's Republic of China
| | - Baoting Sun
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education , Tianjin University of Science and Technology , 29 13th Avenue , Tianjin Economic and Technological Development Area (TEDA), Tianjin 300457 , People's Republic of China
| | - Jiandong Cui
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education , Tianjin University of Science and Technology , 29 13th Avenue , Tianjin Economic and Technological Development Area (TEDA), Tianjin 300457 , People's Republic of China
- Research Center for Fermentation Engineering of Hebei, College of Bioscience and Bioengineering , Hebei University of Science and Technology , 26 Yuxiang Street , Shijiazhang , Hebei 050000 , People's Republic of China
| | - Sizhu Ren
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education , Tianjin University of Science and Technology , 29 13th Avenue , Tianjin Economic and Technological Development Area (TEDA), Tianjin 300457 , People's Republic of China
| | - Tao Lin
- Research Center for Fermentation Engineering of Hebei, College of Bioscience and Bioengineering , Hebei University of Science and Technology , 26 Yuxiang Street , Shijiazhang , Hebei 050000 , People's Republic of China
| | - Yuxiao Feng
- Research Center for Fermentation Engineering of Hebei, College of Bioscience and Bioengineering , Hebei University of Science and Technology , 26 Yuxiang Street , Shijiazhang , Hebei 050000 , People's Republic of China
| | - Shiru Jia
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education , Tianjin University of Science and Technology , 29 13th Avenue , Tianjin Economic and Technological Development Area (TEDA), Tianjin 300457 , People's Republic of China
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232
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Agi A, Junin R, Rasol M, Gbadamosi A, Gunaji R. Treated Rhizophora mucronata tannin as a corrosion inhibitor in chloride solution. PLoS One 2018; 13:e0200595. [PMID: 30089104 PMCID: PMC6082518 DOI: 10.1371/journal.pone.0200595] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Accepted: 06/29/2018] [Indexed: 11/26/2022] Open
Abstract
Treated Rhizopora mucronata tannin (RMT) as a corrosion inhibitor for carbon steel and copper in oil and gas facilities was investigated. Corrosion rate of carbon-steel and copper in 3wt% NaCl solution by RMT was studied using chemical (weight loss method) and spectroscopic (FTIR) techniques at various temperatures in the ranges of 26–90°C. The weight loss data was compared to the electrochemical by the application of Faraday’s law for the conversion of corrosion rate data from one system to another. The inhibitive efficiency of RMT was compared with commercial inhibitor sodium benzotriazole (BTA-S). The best concentration of RMT was 20% (w/v), increase in concentration of RMT decreased the corrosion rate and increased the inhibitive efficiency. Increase in temperature increased the corrosion rate and decreased the inhibitive efficiency but, the rate of corrosion was mild with RMT. The FTIR result shows the presence of hydroxyl group, aromatic group, esters and the substituted benzene group indicating the purity of the tannin. The trend of RMT was similar to that of BTA-S, but its inhibitive efficiency for carbon-steel was poor (6%) compared to RMT (59%). BTA-S was efficient for copper (76%) compared to RMT (74%) at 40% (w/v) and 20% (w/v) concentration respectively. RMT was efficient even at low concentration therefore, the use of RMT as a cost effective and environmentally friendly corrosion inhibiting agent for carbon steel and copper is herein proposed.
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Affiliation(s)
- Augustine Agi
- Department of Petroleum Engineering, Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, UTM Skudai, Johor Bahru, Malaysia
- Department of Petroleum Engineering, University of Port Harcourt, Port Harcourt, Nigeria
| | - Radzuan Junin
- Department of Petroleum Engineering, Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, UTM Skudai, Johor Bahru, Malaysia
- * E-mail:
| | - Muhammad Rasol
- Department of Petroleum Engineering, Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, UTM Skudai, Johor Bahru, Malaysia
| | - Afeez Gbadamosi
- Department of Petroleum Engineering, Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, UTM Skudai, Johor Bahru, Malaysia
- Department of Chemical Engineering, Ladoke Akintola University of Technology, Ogbomoso, Nigeria
| | - Radhika Gunaji
- Department of Petroleum Engineering, Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, UTM Skudai, Johor Bahru, Malaysia
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233
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Sugiura Y, Usui M, Katsuzaki H, Imai K, Kakinuma M, Amano H, Miyata M. Orally Administered Phlorotannins from Eisenia arborea Suppress Chemical Mediator Release and Cyclooxygenase-2 Signaling to Alleviate Mouse Ear Swelling. Mar Drugs 2018; 16:E267. [PMID: 30072652 PMCID: PMC6117712 DOI: 10.3390/md16080267] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Revised: 07/21/2018] [Accepted: 07/28/2018] [Indexed: 01/29/2023] Open
Abstract
Phlorotannin is the collective term for polyphenols derived from brown algae belonging to the genera Ascopyllum, Ecklonia, Eisenia, Fucus and Sargassum etc. Since the incidence of allergies is currently increasing in the world, there is a focus on phlorotannins having anti-allergic and anti-inflammatory effects. In this study, six purified phlorotannins (eckol; 6,6'-bieckol; 6,8'-bieckol; 8,8'-bieckol; phlorofucofuroeckol (PFF)-A and PFF-B) from Eisenia arborea, orally administered to mice, were examined for their suppression effects on ear swelling. In considering the suppression, we also examined whether the phlorotannins suppressed release of chemical mediators (histamine, leukotriene B₄ and prostaglandin E₂), and mRNA expression and/or the activity of cyclooxygenase-2 (COX-2), using RBL-2H3 cells, a cultured mast cell model. Results showed that the phlorotnannins exhibited suppression effects in all experiments, with 6,8'-bieckol, 8,8'-bieckol and PFF-A showing the strongest of these effects. In conclusion, orally administered phlorotannins suppress mouse ear swelling, and this mechanism apparently involves suppression of chemical mediator release and COX-2 mRNA expression or activity. This is the first report of the anti-allergic effects of the orally administered purified phlorotannins in vivo. Phlorotannins show potential for use in functional foods or drugs.
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Affiliation(s)
- Yoshimasa Sugiura
- Laboratory of Food Function and Biochemistry, Department of Food Science and Technology, National Research and Development Agency, Japan Fisheries Research and Education Agency, National Fisheries University, Shimonoseki 759-6595, Japan.
| | - Masakatsu Usui
- Laboratory of Food Function and Biochemistry, Department of Food Science and Technology, National Research and Development Agency, Japan Fisheries Research and Education Agency, National Fisheries University, Shimonoseki 759-6595, Japan.
| | - Hirotaka Katsuzaki
- Laboratory of Bioorganic Chemistry, Graduate School of Bioresources, Mie University, Tsu 514-8507, Japan.
| | - Kunio Imai
- Laboratory of Bioorganic Chemistry, Graduate School of Bioresources, Mie University, Tsu 514-8507, Japan.
| | - Makoto Kakinuma
- Laboratory of Marine Biochemistry, Graduate School of Bioresources, Mie University, Tsu 514-8507, Japan.
| | - Hideomi Amano
- Laboratory of Marine Biochemistry, Graduate School of Bioresources, Mie University, Tsu 514-8507, Japan.
| | - Masaaki Miyata
- Laboratory of Food Function and Biochemistry, Department of Food Science and Technology, National Research and Development Agency, Japan Fisheries Research and Education Agency, National Fisheries University, Shimonoseki 759-6595, Japan.
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234
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Vissers AM, Pellikaan WF, Bouwhuis A, Vincken JP, Gruppen H, Hendriks WH. Laminaria digitata phlorotannins decrease protein degradation and methanogenesis during in vitro ruminal fermentation. J Sci Food Agric 2018; 98:3644-3650. [PMID: 29250785 DOI: 10.1002/jsfa.8842] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Revised: 11/06/2017] [Accepted: 12/13/2017] [Indexed: 06/07/2023]
Abstract
BACKGROUND Phlorotannins (PhTs) are marine tannins consisting of phloroglucinol subunits connected via carbon-carbon and ether linkages. These have non-covalent protein binding properties and are, therefore, expected to be beneficial in protecting protein from hydrolysis during ruminal fermentation. In this study, the effectiveness of a methanolic PhTs extract from Laminaria digitata (10, 20, 40, 50, 75 and 100 g kg-1 tannin-free grass silage, with or without addition of polyethylene glycol (PEG), was investigated in vitro on protection of dietary protein and reduction of methane (CH4 ) in ruminal fluid. RESULTS Addition of PhTs had linear (P < 0.0001) and quadratic (P = 0.0003) effects on gas and CH4 production, respectively. Optimal dosage of PhTs was 40 g kg-1 as at this point CH4 decreased (P < 0.0001) from 24.5 to 15.2 mL g-1 organic matter (OM), without affecting gas production (P = 0.3115) and total volatile fatty acids (P = 1.000). Ammonia trended (P = 0.0903) to decrease from 0.49 to 0.39 mmol g-1 OM, indicating protection of protein. Addition of PEG inhibited the effect of tannins at all dosage levels, and none of the fermentation parameters differed from the control. CONCLUSION PhTs effectively protected protein from fermentation and reduced ruminal methanogenesis. © 2017 Society of Chemical Industry.
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Affiliation(s)
- Anne M Vissers
- Wageningen University and Research, Laboratory of Food Chemistry, Bornse Weilanden, WG, Wageningen, The Netherlands
| | - Wilbert F Pellikaan
- Wageningen University and Research, Animal Nutrition Group, Department of Animal Sciences, Wageningen, The Netherlands
| | - Anouk Bouwhuis
- Wageningen University and Research, Laboratory of Food Chemistry, Bornse Weilanden, WG, Wageningen, The Netherlands
| | - Jean-Paul Vincken
- Wageningen University and Research, Laboratory of Food Chemistry, Bornse Weilanden, WG, Wageningen, The Netherlands
| | - Harry Gruppen
- Wageningen University and Research, Laboratory of Food Chemistry, Bornse Weilanden, WG, Wageningen, The Netherlands
| | - Wouter H Hendriks
- Wageningen University and Research, Animal Nutrition Group, Department of Animal Sciences, Wageningen, The Netherlands
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235
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Cao X, Li X, Liu F, Luo Y, Yu L. Copper nanoclusters as fluorescence-quenching probes for the quantitative analysis of total iodine. LUMINESCENCE 2018; 33:981-985. [PMID: 29790654 DOI: 10.1002/bio.3498] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Revised: 03/28/2018] [Accepted: 04/07/2018] [Indexed: 11/09/2022]
Abstract
Tannic acid-coated copper nanoclusters (CuNCs@TA) were synthesized and used quantitatively to analyze iodine in kelp. Compared with other methods for iodine detection, the proposed method showed excellent performance. The iodine-induced linear decrease in the fluorescence intensity of CuNCs@TA allowed the quantitative detection of iodine in the range 20-100 μM, and the limit of detection for iodine was 18 nM. The probe can be used for the determination of iodine in real samples with reliable and accurate results. Modified Stern-Volmer equation and thermodynamic calculation studies were used to discuss the quenching mechanism.
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Affiliation(s)
- Xueling Cao
- College of Chemical & Pharmaceutical Engineering, Jilin Institute of Chemical Technology, Jilin City, China
| | - Xin Li
- Jilin Petrochemical Company, Jilin City, China
| | - Faxian Liu
- Jilin Petrochemical Company, Jilin City, China
| | - Yanan Luo
- College of Chemical & Pharmaceutical Engineering, Jilin Institute of Chemical Technology, Jilin City, China
| | - Liying Yu
- College of Chemical & Pharmaceutical Engineering, Jilin Institute of Chemical Technology, Jilin City, China
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236
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Hixson JL, Durmic Z, Vadhanabhuti J, Vercoe PE, Smith PA, Wilkes EN. Exploiting Compositionally Similar Grape Marc Samples to Achieve Gradients of Condensed Tannin and Fatty Acids for Modulating In Vitro Methanogenesis. Molecules 2018; 23:molecules23071793. [PMID: 30037004 PMCID: PMC6100490 DOI: 10.3390/molecules23071793] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Revised: 07/12/2018] [Accepted: 07/18/2018] [Indexed: 11/16/2022] Open
Abstract
Ruminants produce large amounts of the greenhouse gas, methane, which can be reduced by supplementing feed with products that contain anti-methanogenic compounds, such as the solid winemaking by-product, grape marc. The aim of this study was to exploit compositional differences in grape marc to better understand the roles of condensed tannin and fatty acids in altering methanogenesis in a ruminant system. Grape marc samples varying in tannin extractability, tannin size and subunit composition, and fatty acid or tannin concentrations were selected and incubated in rumen fluid using an in vitro batch fermentation approach with a concentrate-based control. Four distinct experiments were designed to investigate the effects on overall fermentation and methane production. Generally, fatty acid concentration in grape marc was associated with decreased total gas volumes and volatile fatty acid concentration, whereas increased condensed tannin concentration tended to decrease methane percentage. Smaller, extractable tannin was more effective at reducing methane production, without decreasing overall gas production. In conclusion, fatty acids and tannin concentration, and tannin structure in grape marc play a significant role in the anti-methanogenic effect of this by-product when studied in vitro. These results should be considered when developing strategies to reduce methane in ruminants by feeding grape marc.
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Affiliation(s)
- Josh L Hixson
- The Australian Wine Research Institute, P.O. Box 197, Glen Osmond SA 5064, Australia.
| | - Zoey Durmic
- School of Agriculture and Environment, The University of Western Australia M085, 35 Stirling Hwy, Crawley WA 6009, Australia.
| | - Joy Vadhanabhuti
- School of Agriculture and Environment, The University of Western Australia M085, 35 Stirling Hwy, Crawley WA 6009, Australia.
| | - Philip E Vercoe
- School of Agriculture and Environment, The University of Western Australia M085, 35 Stirling Hwy, Crawley WA 6009, Australia.
- Institute of Agriculture, The University of Western Australia M085, 35 Stirling Hwy, Crawley WA 6009, Australia.
| | - Paul A Smith
- The Australian Wine Research Institute, P.O. Box 197, Glen Osmond SA 5064, Australia.
| | - Eric N Wilkes
- The Australian Wine Research Institute, P.O. Box 197, Glen Osmond SA 5064, Australia.
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237
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Abstract
For this work, the aim was to investigate the adsorption of the tannic acid (TA)/sodium caseinate (SC) nanocomplexes at the air/water interface and then to research its relationship with foam properties. First, nanocomplexes were prepared in a different mass ratio of TA and SC. The bulk behavior of nanocomplexes was evaluated by dynamic light scattering (DLS), signal-intensifying fluorescence probe (ANS), etc. As the concentration of TA increased, the z-average siameter ( D z) of TA/SC nanocomplexes decreased gradually and the negative charge increased. Meanwhile, the surface hydrophobicity ( So) of the SC also decreased after the addition of TA. The interfacial properties were determined by dynamic surface tension and dilational rheology. The presence of polyphenols decreased the surface pressure (π) that resulted in poor foamability. However, the elastic ( Ed) component of the dilational modulus of films also increased as polyphenols concentration increased, which gave rise to admirable foam stability. The contribution of polyphenols to stabilize foam columns may be caused by interfacial interaction between proteins and polyphenols.
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Affiliation(s)
- Fuchao Zhan
- College of Food Science and Technology , Huazhong Agricultural University , Wuhan 430070 , China
- Key Laboratory of Environment Correlative Dietology , Huazhong Agricultural University, Ministry of Education , Wuhan 430070 , China
| | - Jing Li
- College of Food Science and Technology , Huazhong Agricultural University , Wuhan 430070 , China
- Key Laboratory of Environment Correlative Dietology , Huazhong Agricultural University, Ministry of Education , Wuhan 430070 , China
| | - Yuntao Wang
- School of Food and Biological Engineering , Zhengzhou University of Light Industry , Zhengzhou 450003 , China
| | - Minqi Shi
- College of Food Science and Technology , Huazhong Agricultural University , Wuhan 430070 , China
| | - Bin Li
- College of Food Science and Technology , Huazhong Agricultural University , Wuhan 430070 , China
- Key Laboratory of Environment Correlative Dietology , Huazhong Agricultural University, Ministry of Education , Wuhan 430070 , China
| | - Feng Sheng
- Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources, The College of Life Sciences , Hubei University , Wuhan 430062 , China
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238
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Abstract
Pancreatic lipase (PL) is a critical enzyme associated with hyperlipidemia and obesity. A previous study of ours suggested that persimmon tannin (PT) was the main component accounting for the antihyperlipidemic effects of persimmon fruits, but the underlying mechanisms were unclear. In this present study, the inhibitory effect of PT on PL was studied and the possible mechanisms were evaluated by fluorescence spectroscopy, circular dichroism (CD) spectra, isothermal titration calorimetry (ITC), and molecular docking. PT had a high affinity to PL and inhibited the activity of PL with the half maximal inhibitory concertation (IC50) value of 0.44 mg/mL in a noncompetitive way. Furthermore, molecular docking revealed that the hydrogen bonding and π-π stacking was mainly responsible for the interaction. The strong inhibition of PT on PL in the gastrointestinal tract might be one mechanism for its lipid-lowering effect.
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Affiliation(s)
- Wei Zhu
- College of Food Science and Technology , Huazhong Agricultural University , Wuhan 430070 , China
| | - Yangyang Jia
- College of Food Science and Technology , Huazhong Agricultural University , Wuhan 430070 , China
| | - Jinming Peng
- College of Food Science and Technology , Huazhong Agricultural University , Wuhan 430070 , China
| | - Chun-Mei Li
- College of Food Science and Technology , Huazhong Agricultural University , Wuhan 430070 , China
- Key Laboratory of Environment Correlative Food Science , Huazhong Agricultural University, Ministry of Education , Wuhan 430070 , China
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239
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Vignault A, González-Centeno MR, Pascual O, Gombau J, Jourdes M, Moine V, Iturmendi N, Canals JM, Zamora F, Teissedre PL. Chemical characterization, antioxidant properties and oxygen consumption rate of 36 commercial oenological tannins in a model wine solution. Food Chem 2018; 268:210-219. [PMID: 30064750 DOI: 10.1016/j.foodchem.2018.06.031] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Revised: 05/14/2018] [Accepted: 06/07/2018] [Indexed: 11/18/2022]
Abstract
The chemical composition (CC), antioxidant capacity (AC) and oxygen consumption rate (OCR) of 36 different commercial tannins were measured. The CC was analyzed by total polyphenol index, Bate-Smith, methyl-cellulose, Folin-Ciocalteu, OIV official method and phloroglucinolisis. The AC was measured by different methods (ABTS, CUPRAC, DPPH, FRAP, ORAC) using Trolox as standard. The OCR was measured using a non-invasive method based on luminescence. The results indicate that it is possible to obtain differentiation between procyanidins/prodelphinidins, profisetinidins/prorobinetidins, gallotannins and ellagitannins by PCA based on their CC data. It is also possible to separate condensed from hydrolysable tannins by PCA based on their AC data. The results show that ellagitannins are the fastest oxygen consumers of the various oenological tannins, followed in descending order by condensed tannins and finally gallotannins. The combination of CC, AC and OCR analyses enable to classify tannins according to their effectiveness in protecting wines against oxidation.
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Affiliation(s)
- Adeline Vignault
- Univ. Bordeaux, ISVV, EA 4577 Œnologie, 210 Chemin de Leysotte, 33140 Villenave d'Ornon, France; INRA, ISVV, USC 1366 Œnologie, 210 Chemin de Leysotte, 33140 Villenave d'Ornon, France; Departament de Bioquímica i Biotecnologia, Facultat d'Enologia de Tarragona, Universitat Rovira i Virgili, C/Marcel.li Domingo s/n, 43007 Tarragona, Spain; Laffort, 11 rue Aristide Bergès, 33270 Floirac, France
| | - Maria Reyes González-Centeno
- Univ. Bordeaux, ISVV, EA 4577 Œnologie, 210 Chemin de Leysotte, 33140 Villenave d'Ornon, France; INRA, ISVV, USC 1366 Œnologie, 210 Chemin de Leysotte, 33140 Villenave d'Ornon, France
| | - Olga Pascual
- Departament de Bioquímica i Biotecnologia, Facultat d'Enologia de Tarragona, Universitat Rovira i Virgili, C/Marcel.li Domingo s/n, 43007 Tarragona, Spain
| | - Jordi Gombau
- Departament de Bioquímica i Biotecnologia, Facultat d'Enologia de Tarragona, Universitat Rovira i Virgili, C/Marcel.li Domingo s/n, 43007 Tarragona, Spain
| | - Michael Jourdes
- Univ. Bordeaux, ISVV, EA 4577 Œnologie, 210 Chemin de Leysotte, 33140 Villenave d'Ornon, France; INRA, ISVV, USC 1366 Œnologie, 210 Chemin de Leysotte, 33140 Villenave d'Ornon, France
| | | | | | - Juan Miquel Canals
- Departament de Bioquímica i Biotecnologia, Facultat d'Enologia de Tarragona, Universitat Rovira i Virgili, C/Marcel.li Domingo s/n, 43007 Tarragona, Spain
| | - Fernando Zamora
- Departament de Bioquímica i Biotecnologia, Facultat d'Enologia de Tarragona, Universitat Rovira i Virgili, C/Marcel.li Domingo s/n, 43007 Tarragona, Spain
| | - Pierre-Louis Teissedre
- Univ. Bordeaux, ISVV, EA 4577 Œnologie, 210 Chemin de Leysotte, 33140 Villenave d'Ornon, France; INRA, ISVV, USC 1366 Œnologie, 210 Chemin de Leysotte, 33140 Villenave d'Ornon, France.
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Park J, Suh DH, Singh D, Lee S, Lee JS, Lee CH. Systematic metabolic profiling and bioactivity assays for bioconversion of Aceraceae family. PLoS One 2018; 13:e0198739. [PMID: 29879203 PMCID: PMC5991731 DOI: 10.1371/journal.pone.0198739] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2018] [Accepted: 05/24/2018] [Indexed: 01/13/2023] Open
Abstract
Plants are an important and inexhaustible source of bioactive molecules in food, medicine, agriculture, and industry. In this study, we performed systematic liquid chromatography-mass spectrometry (LC-MS)-based metabolic profiling coupled with antioxidant assays for indigenous plant family extracts. Partial least-squares discriminant analysis of LC-MS datasets for the extracts of 34 plant species belonging to the families Aceraceae, Asteraceae, and Rosaceae showed that these species were clustered according to their respective phylogenies. In particular, seven Aceraceae species were clearly demarcated with higher average antioxidant activities, rationalizing their application for bioconversion studies. On the basis of further evaluation of the interspecies variability of metabolic profiles and antioxidant activities among Aceraceae family plants, we found that Acer tataricum (TA) extracts were clearly distinguished from those of other species, with a higher relative abundance of tannin derivatives. Further, we detected a strong positive correlation between most tannin derivatives and the observed higher antioxidant activities. Following Aspergillus oryzae-mediated fermentative bioconversion of Acer plant extracts, we observed a time-correlated (0-8 days) linear increase in antioxidant phenotypes for all species, with TA having the highest activity. Temporal analysis of the MS data revealed tannin bioconversion mechanisms with a relatively higher abundance of gallic acid (m/z 169) accumulated at the end of 8 days, particularly in TA. Similarly, quercetin precursor (glycoside) metabolites were also transformed to quercetin aglycones (m/z 301) in most Acer plant extracts. The present study underscores the efficacy of fermentative bioconversion strategies aimed at enhancing the quality and availability of bioactive metabolites from plant extracts.
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Affiliation(s)
- Jinyong Park
- Department of Bioscience and Biotechnology, Konkuk University, Seoul, Republic of Korea
| | - Dong Ho Suh
- Department of Bioscience and Biotechnology, Konkuk University, Seoul, Republic of Korea
| | - Digar Singh
- Department of Bioscience and Biotechnology, Konkuk University, Seoul, Republic of Korea
| | - Sarah Lee
- National Institute of Biological Resources, Environmental Research Complex, Incheon, Republic of Korea
| | - Jong Seok Lee
- National Institute of Biological Resources, Environmental Research Complex, Incheon, Republic of Korea
| | - Choong Hwan Lee
- Department of Bioscience and Biotechnology, Konkuk University, Seoul, Republic of Korea
- * E-mail:
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Cebrián-Tarancón C, Sánchez-Gómez R, Gómez-Alonso S, Hermosín-Gutierrez I, Mena-Morales A, García-Romero E, Salinas MR, Zalacain A. Vine-Shoot Tannins: Effect of Post-pruning Storage and Toasting Treatment. J Agric Food Chem 2018; 66:5556-5562. [PMID: 29770693 DOI: 10.1021/acs.jafc.8b01540] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
For the first time vine-shoot tannin composition was carried out by means of HPLC-DAD-ESI-MS/MS. Two vine-shoot cultivars (Airén and Cencibel) with different post-pruning storage times were submitted to a toasting process and assayed. There were no traces of gallotannins nor ellagitannins, but a high proanthocyanidin content and a mean degree of polymerization (mDP) close to 3 were characterized. The higher concentration of proanthocyanidins corresponded to Airén after 6 months post-pruning storage and at 3 months for Cencibel. Procyanidins were the most abundant fraction (70-95%), which decreased with storage, and especially significant was the contribution of B1, B2, and B4 dimers. Prodelphinidins were also found (8-24%), increasing their % with storage time. Toasting produced a considerable reduction of proanthocyanidin content and a loss of a monomer mDP unit, suggesting that if used as oenological tannins, then they may be more bitter and less astringent when compared with the nontoasted vine-shoot samples.
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Affiliation(s)
- Cristina Cebrián-Tarancón
- Universidad de Castilla-La Mancha , E.T.S.I. Agrónomos y Montes, Cátedra de Química Agrícola , Avenida de España s/n , 02071 Albacete , Spain
| | - Rosario Sánchez-Gómez
- Universidad de Castilla-La Mancha , E.T.S.I. Agrónomos y Montes, Cátedra de Química Agrícola , Avenida de España s/n , 02071 Albacete , Spain
| | - Sergio Gómez-Alonso
- Universidad de Castilla-La Mancha , Instituto Regional de Investigación Científica Aplicada , Avenida Camilo José Cela s/n , 13071 Ciudad Real , Spain
| | - Isidro Hermosín-Gutierrez
- Universidad de Castilla-La Mancha , Instituto Regional de Investigación Científica Aplicada , Avenida Camilo José Cela s/n , 13071 Ciudad Real , Spain
| | - Adela Mena-Morales
- Instituto de la Vid y el Vino de Castilla-La Mancha , Carretera de Albacete s/n , 13700 Tomelloso , Spain
| | - Esteban García-Romero
- Instituto de la Vid y el Vino de Castilla-La Mancha , Carretera de Albacete s/n , 13700 Tomelloso , Spain
| | - M Rosario Salinas
- Universidad de Castilla-La Mancha , E.T.S.I. Agrónomos y Montes, Cátedra de Química Agrícola , Avenida de España s/n , 02071 Albacete , Spain
| | - Amaya Zalacain
- Universidad de Castilla-La Mancha , E.T.S.I. Agrónomos y Montes, Cátedra de Química Agrícola , Avenida de España s/n , 02071 Albacete , Spain
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242
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Orlowski P, Tomaszewska E, Ranoszek-Soliwoda K, Gniadek M, Labedz O, Malewski T, Nowakowska J, Chodaczek G, Celichowski G, Grobelny J, Krzyzowska M. Tannic Acid-Modified Silver and Gold Nanoparticles as Novel Stimulators of Dendritic Cells Activation. Front Immunol 2018; 9:1115. [PMID: 29872440 PMCID: PMC5972285 DOI: 10.3389/fimmu.2018.01115] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2018] [Accepted: 05/03/2018] [Indexed: 01/31/2023] Open
Abstract
Silver nanoparticles (AgNPs) are promising new antimicrobial agents against a wide range of skin and mucosal pathogens. However, their interaction with the immune system is currently not fully understood. Dendritic cells (DCs) are crucial during development of T cell-specific responses against bacterial and viral pathogens. We have previously shown that tannic acid-modified silver nanoparticles (TA-AgNPs) consist of a promising microbicide against HSV-2. The aim of this study was to compare the ability of TA-AgNPs or TA-AuNPs of similar sizes (TA-Ag/AuNPs) to induce DCs maturation and activation in the presence of HSV-2 antigens when used at non-toxic doses. First, we used JAWS II DC line to test toxicity, ultrastructure as well as activation markers (MHC I and II, CD40, CD80, CD86, PD-L1) and cytokine production in the presence of TA-Ag/AuNPs. Preparations of HSV-2 treated with nanoparticles (TA-Ag/AuNPs-HSV-2) were further used to investigate HSV-2 antigen uptake, activation markers, TLR9 expression, and cytokine production. Additionally, we accessed proliferation and activation of HSV-2-specific T cells by DCs treated with TA-AgNP/AuNPs-HSV-2. We found that both TA-AgNPs and TA-AuNPs were efficiently internalized by DCs and induced activated ultrastructure. Although TA-AgNPs were more toxic than TA-AuNPs in corresponding sizes, they were also more potent stimulators of DCs maturation and TLR9 expression. TA-Ag/AuNPs-HSV-2 helped to overcome inhibition of DCs maturation by live or inactivated virus through up-regulation of MHC II and CD86 and down-regulation of CD80 expression. Down-regulation of CD40 expression in HSV-2-infected DCs was reversed when HSV-2 was treated with TA-NPs sized >30 nm. On the other hand, small-sized TA-AgNPs helped to better internalize HSV-2 antigens. HSV-2 treated with both types of NPs stimulated activation of JAWS II and memory CD8+ T cells, while TA-AgNPs treatment induced IFN-γ producing CD4+ and CD8+ T cells. Our study shows that TA-AgNPs or TA-AuNPs are good activators of DCs, albeit their final effect upon maturation and activation may be metal and size dependent. We conclude that TA-Ag/AuNPs consist of a novel class of nano-adjuvants, which can help to overcome virus-induced suppression of DCs activation.
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Affiliation(s)
- Piotr Orlowski
- Military Institute of Hygiene and Epidemiology, Warsaw, Poland
| | - Emilia Tomaszewska
- Department of Materials Technology and Chemistry, Faculty of Chemistry, University of Lodz, Lodz, Poland
| | | | | | - Olga Labedz
- Faculty of Chemistry, University of Warsaw, Warsaw, Poland
| | - Tadeusz Malewski
- Museum and Institute of Zoology, Polish Academy of Science, Warsaw, Poland
| | - Julita Nowakowska
- Laboratory of Electron and Confocal Microscopy, Faculty of Biology, University of Warsaw, Warsaw, Poland
| | | | - Grzegorz Celichowski
- Department of Materials Technology and Chemistry, Faculty of Chemistry, University of Lodz, Lodz, Poland
| | - Jaroslaw Grobelny
- Department of Materials Technology and Chemistry, Faculty of Chemistry, University of Lodz, Lodz, Poland
| | - Malgorzata Krzyzowska
- Military Institute of Hygiene and Epidemiology, Warsaw, Poland
- Wroclaw Research Centrum EIT+, Wroclaw, Poland
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Abstract
In this review, a brief description of how animal skins were transformed in leathers in Europe using different vegetable tannins will be presented. Special attention will be dedicated to the description of the type of tannins and the characteristics of the most important type of historic leathers thus obtained. The text will also focus on the description of the techniques used in the identification of these tannins in historic objects: colorimetric tests and spectroscopic analysis.
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Affiliation(s)
- Lina Falcão
- Artistic Studies Research Centre, Faculty of Fine Arts, University of Lisbon, Largo da Academia Nacional de Belas-Artes, 1249-058 Lisboa, Portugal.
- Centre of Chemistry and Biochemistry, Department of Chemistry and Biochemistry, Faculty of Sciences, University of Lisbon, Campo Grande, Edifício C-8, 1749-016 Lisboa, Portugal.
| | - Maria Eduarda M Araújo
- Centre of Chemistry and Biochemistry, Department of Chemistry and Biochemistry, Faculty of Sciences, University of Lisbon, Campo Grande, Edifício C-8, 1749-016 Lisboa, Portugal.
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244
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Guo J, Sun W, Kim JP, Lu X, Li Q, Lin M, Mrowczynski O, Rizk EB, Cheng J, Qian G, Yang J. Development of tannin-inspired antimicrobial bioadhesives. Acta Biomater 2018; 72:35-44. [PMID: 29555464 PMCID: PMC6328059 DOI: 10.1016/j.actbio.2018.03.008] [Citation(s) in RCA: 153] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2018] [Revised: 03/03/2018] [Accepted: 03/05/2018] [Indexed: 12/25/2022]
Abstract
Tissue adhesives play an important role in surgery to close wounds, seal tissues, and stop bleeding, but existing adhesives are costly, cytotoxic, or bond weakly to tissue. Inspired by the water-resistant adhesion of plant-derived tannins, we herein report a new family of bioadhesives derived from a facile, one-step Michael addition of tannic acid and gelatin under oxidizing conditions and crosslinked by silver nitrate. The oxidized polyphenol groups of tannic acid enable wet tissue adhesion through catecholamine-like chemistry, while both tannic acid and silver nanoparticles reduced from silver nitrate provide antimicrobial sources inherent within the polymeric network. These tannin-inspired gelatin bioadhesives are low-cost and readily scalable and eliminate the concerns of potential neurological effect brought by mussel-inspired strategy due to the inclusion of dopamine; variations in gelatin source (fish, bovine, or porcine) and tannic acid feeding ratios resulted in tunable gelation times (36 s-8 min), controllable degradation (up to 100% degradation within a month), considerable wet tissue adhesion strengths (up to 3.7 times to that of fibrin glue), excellent cytocompatibility, as well as antibacterial and antifungal properties. The innate properties of tannic acid as a natural phenolic crosslinker, molecular glue, and antimicrobial agent warrant a unique and significant approach to bioadhesive design. STATEMENT OF SIGNIFICANCE This manuscript describes the development of a new family of tannin-inspired antimicrobial bioadhesives derived from a facile, one-step Michael addition of tannic acid and gelatin under oxidizing conditions and crosslinked by silver nitrate. Our strategy is new and can be easily extended to other polymer systems, low-cost and readily scalable, and eliminate the concerns of potential neurological effect brought by mussel-inspired strategy due to the inclusion of dopamine. The tannin-inspired gelatin bioadhesives hold great promise for a number of applications in wound closure, tissue sealant, hemostasis, antimicrobial and cell/drug delivery, and would be interested to the readers from biomaterials, tissue engineering, and drug delivery area.
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Affiliation(s)
- Jinshan Guo
- Department of Biomedical Engineering, Materials Research Institute, The Huck Institutes of The Life Sciences, The Pennsylvania State University, University Park, PA 16802, USA
| | - Wei Sun
- Department of Biomedical Engineering, Materials Research Institute, The Huck Institutes of The Life Sciences, The Pennsylvania State University, University Park, PA 16802, USA; Zhejiang Provincial Top Key Discipline of Bioengineering, College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo 315100, China
| | - Jimin Peter Kim
- Department of Biomedical Engineering, Materials Research Institute, The Huck Institutes of The Life Sciences, The Pennsylvania State University, University Park, PA 16802, USA
| | - Xili Lu
- Department of Biomedical Engineering, Materials Research Institute, The Huck Institutes of The Life Sciences, The Pennsylvania State University, University Park, PA 16802, USA; Institute of Materials Processing and Intelligent Manufacturing, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China.
| | - Qiyao Li
- Department of Biomedical Engineering, Materials Research Institute, The Huck Institutes of The Life Sciences, The Pennsylvania State University, University Park, PA 16802, USA
| | - Min Lin
- Department of Biomedical Engineering, Materials Research Institute, The Huck Institutes of The Life Sciences, The Pennsylvania State University, University Park, PA 16802, USA; Emergency Center, Jiangxi Provincial Children's Hospital, Nanchang, Jiangxi 330006, China
| | - Oliver Mrowczynski
- Department of Neurosurgery, College of Medicine, The Pennsylvania State University, Hershey 17033, USA
| | - Elias B Rizk
- Department of Neurosurgery, College of Medicine, The Pennsylvania State University, Hershey 17033, USA
| | - Juange Cheng
- Department of Biomedical Engineering, Materials Research Institute, The Huck Institutes of The Life Sciences, The Pennsylvania State University, University Park, PA 16802, USA; Zhejiang Provincial Top Key Discipline of Bioengineering, College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo 315100, China
| | - Guoying Qian
- Zhejiang Provincial Top Key Discipline of Bioengineering, College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo 315100, China.
| | - Jian Yang
- Department of Biomedical Engineering, Materials Research Institute, The Huck Institutes of The Life Sciences, The Pennsylvania State University, University Park, PA 16802, USA.
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245
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Ogawa S, Yazaki Y. Tannins from Acacia mearnsii De Wild. Bark: Tannin Determination and Biological Activities. Molecules 2018; 23:E837. [PMID: 29621196 PMCID: PMC6017853 DOI: 10.3390/molecules23040837] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Revised: 03/20/2018] [Accepted: 04/03/2018] [Indexed: 12/02/2022] Open
Abstract
The bark of Acacia mearnsii De Wild. (black wattle) contains significant amounts of water-soluble components acalled "wattle tannin". Following the discovery of its strong antioxidant activity, a wattle tannin dietary supplement has been developed and as part of developing new dietary supplements, a literature search was conducted using the SciFinder data base for "Acacia species and their biological activities". An analysis of the references found indicated that the name of Acacia nilotica had been changed to Vachellia nilotica, even though the name of the genus Acacia originated from its original name. This review briefly describes why and how the name of A. nilotica changed. Tannin has been analyzed using the Stiasny method when the tannin is used to make adhesives and the hide-powder method is used when the tannin is to be used for leather tanning. A simple UV method is also able to be used to estimate the values for both adhesives and leather tanning applications. The tannin content in bark can also be estimated using NIR and NMR. Tannin content estimations using pyrolysis/GC, electrospray mass spectrometry and quantitative 31P-NMR analyses have also been described. Tannins consists mostly of polyflavanoids and all the compounds isolated have been updated. Antioxidant activities of the tannin relating to anti-tumor properties, the viability of human neuroblastoma SH-SY5Y cells and also anti-hypertensive effects have been studied. The antioxidant activity of proanthocyanidins was found to be higher than that of flavan-3-ol monomers. A total of fourteen papers and two patents reported the antimicrobial activities of wattle tannin. Bacteria were more susceptible to the tannins than the fungal strains tested. Several bacteria were inhibited by the extract from A. mearnsii bark. The growth inhibition mechanisms of E. coli were investigated. An interaction between extracts from A. mearnsii bark and antibiotics has also been studied. The extracts from A. mearnsii bark inhibit the growth of cyanobacteria. Wattle tannin has the ability to inactivate α-amylase, lipase and glucosidase. In vivo experiments on anti-obesity and anti-diabetes were also reported. Several patents relating to these enzymes for anti-diabetes and anti-obesity are in the literature. In addition, studies on Acacia bark extract regarding its antitermite activities, inhibition of itching in atopic dermatitis and anti-inflammatory effects have also been reported. The growth of bacteria was inhibited by the extract from A. mearnsii bark, and typical intestinal bacteria such as E. coli, K. pneumoniae, P. vulgaris and S. marcescenes was also inhibited in vitro by extracts. Based on these results, the Acacia bark extract may inhibit not only the growth of these typical intestinal bacteria but also the growth of other types of intestinal bacteria such as Clostridium and Bacteroides, a so-called "bad bacteria". If the tannin extract from A. mearnsii bark inhibits growth of these "bad bacteria" in vivo evaluation, the extracts might be usable as a new dietary supplement, which could control the human intestinal microbiome to keep the body healthy.
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Affiliation(s)
- Sosuke Ogawa
- Mimozax Co., Ltd., 4291-1, Miyauchi, Hatsukaichi-shi, Hiroshima 738-0034, Japan.
| | - Yoshikazu Yazaki
- Department of Chemical Engineering, Monash University, Clayton, Victoria 3800, Australia.
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Jia X, Luo H, Xu M, Zhai M, Guo Z, Qiao Y, Wang L. Dynamic Changes in Phenolics and Antioxidant Capacity during Pecan (Carya illinoinensis) Kernel Ripening and Its Phenolics Profiles. Molecules 2018; 23:E435. [PMID: 29462910 PMCID: PMC6017656 DOI: 10.3390/molecules23020435] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Revised: 02/11/2018] [Accepted: 02/12/2018] [Indexed: 11/17/2022] Open
Abstract
Pecan (Carya illinoinensis) kernels have a high phenolics content and a high antioxidant capacity compared to other nuts-traits that have attracted great interest of late. Changes in the total phenolic content (TPC), condensed tannins (CT), total flavonoid content (TFC), five individual phenolics, and antioxidant capacity of five pecan cultivars were investigated during the process of kernel ripening. Ultra-performance liquid chromatography coupled with quadruple time-of-flight mass (UPLC-Q/TOF-MS) was also used to analyze the phenolics profiles in mixed pecan kernels. TPC, CT, TFC, individual phenolics, and antioxidant capacity were changed in similar patterns, with values highest at the water or milk stages, lowest at milk or dough stages, and slightly varied at kernel stages. Forty phenolics were tentatively identified in pecan kernels, of which two were first reported in the genus Carya, six were first reported in Carya illinoinensis, and one was first reported in its kernel. The findings on these new phenolic compounds provide proof of the high antioxidant capacity of pecan kernels.
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Affiliation(s)
- Xiaodong Jia
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, Jiangsu, China.
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, Jiangsu, China.
| | - Huiting Luo
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, Jiangsu, China.
| | - Mengyang Xu
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, Jiangsu, China.
| | - Min Zhai
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, Jiangsu, China.
| | - Zhongren Guo
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, Jiangsu, China.
| | - Yushan Qiao
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, Jiangsu, China.
| | - Liangju Wang
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, Jiangsu, China.
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247
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Abdelhamid A, Jouini M, Bel Haj Amor H, Mzoughi Z, Dridi M, Ben Said R, Bouraoui A. Phytochemical Analysis and Evaluation of the Antioxidant, Anti-Inflammatory, and Antinociceptive Potential of Phlorotannin-Rich Fractions from Three Mediterranean Brown Seaweeds. Mar Biotechnol (NY) 2018; 20:60-74. [PMID: 29344826 DOI: 10.1007/s10126-017-9787-z] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Accepted: 11/27/2017] [Indexed: 06/07/2023]
Abstract
Phlorotannins, phenolic compounds produced exclusively by seaweeds, have been reported to possess various pharmacological properties. However, there have been few works on these compounds from Mediterranean seaweeds. In this study, we investigated the phytochemical analysis and pharmacological potential of phlorotannin-rich fractions from three brown seaweeds collected along the Tunisia coast: Cystoseira sedoides (PHT-SED), Cladostephus spongeosis (PHT-CLAD), and Padina pavonica (PHT-PAD). Phytochemical determinations showed considerable differences in total phenolic content (TPC) and phlorotannin content (PHT). The highest TPC level (26.45 mg PGE/g dry material (Dm)) and PHT level (873.14 μg PGE/g Dm) were observed in C. sedoides. The antioxidant properties of these three fractions assessed by three different methods indicated that C. sedoides displayed the highest total antioxidant activity among the three species (71.30 mg GAE/g Dm), as well as the free radical scavenging activity with the lowest IC50 value in both DPPH (27.7 μg/mL) and ABTS (19.1 μg/mL) assays. Furthermore, the pharmacological screening of the anti-inflammatory potential of these fractions using in vivo models, in comparison to reference drugs, established a remarkable activity of PHT-SED at the dose of 100 mg/kg; the inhibition percentages of ear edema in mice model and paw edema in rats model were of 82.55 and 81.08%, respectively. The content of malondialdehyde (MDA) in liver tissues has been quantified, and PHT-SED was found to remarkably increase the lipid peroxidation in rat liver tissues. In addition, in two pain mice models, PHT-SED displayed a profound antinociceptive activity at 100 mg/kg and has proved a better analgesic activity when used in combination with the opioid drug, tramadol.
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Affiliation(s)
- Amal Abdelhamid
- Laboratory of Chemical, Galenic and Pharmacological Development of Drugs, Faculty of Pharmacy of Monastir, University of Monastir, 5000, Monastir, Tunisia.
| | - Meriem Jouini
- Laboratory of Heterocyclic Chemistry, Natural Products and Reactivity, Medicinal Chemistry and Natural Products Team, Faculty of Sciences of Monastir, University of Monastir, 5019, Monastir, Tunisia
| | - Haifa Bel Haj Amor
- Laboratory of Chemical, Galenic and Pharmacological Development of Drugs, Faculty of Pharmacy of Monastir, University of Monastir, 5000, Monastir, Tunisia
| | - Zeineb Mzoughi
- Laboratory of Interfaces and Advanced Materials, Faculty of Sciences of Monastir, University of Monastir, 5000, Monastir, Tunisia
| | - Mehdi Dridi
- Laboratory of Chemical, Galenic and Pharmacological Development of Drugs, Faculty of Pharmacy of Monastir, University of Monastir, 5000, Monastir, Tunisia
| | - Rafik Ben Said
- National Institute of Marine Sciences and Technologies, Salambôo, Tunis, Tunisia
| | - Abderrahman Bouraoui
- Laboratory of Chemical, Galenic and Pharmacological Development of Drugs, Faculty of Pharmacy of Monastir, University of Monastir, 5000, Monastir, Tunisia
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248
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Larrañaga A, Isa ILM, Patil V, Thamboo S, Lomora M, Fernández-Yague MA, Sarasua JR, Palivan CG, Pandit A. Antioxidant functionalized polymer capsules to prevent oxidative stress. Acta Biomater 2018; 67:21-31. [PMID: 29258803 DOI: 10.1016/j.actbio.2017.12.014] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Revised: 11/18/2017] [Accepted: 12/11/2017] [Indexed: 12/23/2022]
Abstract
Polymeric capsules exhibit significant potential for therapeutic applications as microreactors, where the bio-chemical reactions of interest are efficiently performed in a spatial and time defined manner due to the encapsulation of an active biomolecule (e.g., enzyme) and control over the transfer of reagents and products through the capsular membrane. In this work, catalase loaded polymer capsules functionalized with an external layer of tannic acid (TA) are fabricated via a layer-by-layer approach using calcium carbonate as a sacrificial template. The capsules functionalised with TA exhibit a higher scavenging capacity for hydrogen peroxide and hydroxyl radicals, suggesting that the external layer of TA shows intrinsic antioxidant properties, and represents a valid strategy to increase the overall antioxidant potential of the developed capsules. Additionally, the hydrogen peroxide scavenging capacity of the capsules is enhanced in the presence of the encapsulated catalase. The capsules prevent oxidative stress in an in vitro inflammation model of degenerative disc disease. Moreover, the expression of matrix metalloproteinase-3 (MMP-3), and disintegrin and metalloproteinase with thrombospondin motif-5 (ADAMTS-5), which represents the major proteolytic enzymes in intervertebral disc, are attenuated in the presence of the polymer capsules. This platform technology exhibits potential to reduce oxidative stress, a key modulator in the pathology of a broad range of inflammatory diseases. STATEMENT OF SIGNIFICANCE Oxidative stress damages important cell structures leading to cellular apoptosis and senescence, for numerous disease pathologies including cancer, neurodegeneration or osteoarthritis. Thus, the development of biomaterials-based systems to control oxidative stress has gained an increasing interest. Herein, polymer capsules loaded with catalase and functionalized with an external layer of tannic acid are fabricated, which can efficiently scavenge important reactive oxygen species (i.e., hydroxyl radicals and hydrogen peroxide) and modulate extracellular matrix activity in an in vitro inflammation model of nucleus pulposus. The present work represents accordingly, an important advance in the development and application of polymer capsules with antioxidant properties for the treatment of oxidative stress, which is applicable for multiple inflammatory disease targets.
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Affiliation(s)
- Aitor Larrañaga
- Centre for Research in Medical Devices (CÚRAM), National University of Ireland, Galway, Ireland; Department of Mining-Metallurgy Engineering and Materials Science & POLYMAT, University of the Basque Country, Bilbao, Spain
| | - Isma Liza Mohd Isa
- Centre for Research in Medical Devices (CÚRAM), National University of Ireland, Galway, Ireland
| | - Vaibhav Patil
- Centre for Research in Medical Devices (CÚRAM), National University of Ireland, Galway, Ireland
| | - Sagana Thamboo
- Chemistry Department, University of Basel, Basel, Switzerland
| | - Mihai Lomora
- Centre for Research in Medical Devices (CÚRAM), National University of Ireland, Galway, Ireland
| | - Marc A Fernández-Yague
- Centre for Research in Medical Devices (CÚRAM), National University of Ireland, Galway, Ireland
| | - Jose-Ramon Sarasua
- Department of Mining-Metallurgy Engineering and Materials Science & POLYMAT, University of the Basque Country, Bilbao, Spain
| | | | - Abhay Pandit
- Centre for Research in Medical Devices (CÚRAM), National University of Ireland, Galway, Ireland.
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Chai WM, Huang Q, Lin MZ, Ou-Yang C, Huang WY, Wang YX, Xu KL, Feng HL. Condensed Tannins from Longan Bark as Inhibitor of Tyrosinase: Structure, Activity, and Mechanism. J Agric Food Chem 2018; 66:908-917. [PMID: 29313327 DOI: 10.1021/acs.jafc.7b05481] [Citation(s) in RCA: 80] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
In this study, the content, structure, antityrosinase activity, and mechanism of longan bark condensed tannins were evaluated. The findings obtained from mass spectrometry demonstrated that longan bark condensed tannins were mixtures of procyanidins, propelargonidins, prodelphinidins, and their acyl derivatives (galloyl and p-hydroxybenzoate). The enzyme analysis indicated that these mixtures were efficient, reversible, and mixed (competitive is dominant) inhibitor of tyrosinase. What's more, the mixtures showed good inhibitions on proliferation, intracellular enzyme activity and melanogenesis of mouse melanoma cells (B16). From molecular docking, the results showed the interactions between inhibitors and tyrosinase were driven by hydrogen bond, electrostatic, and hydrophobic interactions. In addition, high levels of total phenolic and extractable condensed tannins suggested that longan bark might be a good source of tyrosinase inhibitor. This study would offer theoretical basis for the development of longan bark condensed tannins as novel food preservatives and medicines of skin diseases.
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Affiliation(s)
- Wei-Ming Chai
- College of Life Science and Key Laboratory of Small Functional Organic Molecule, Ministry of Education, Jiangxi Normal University , Nanchang, Jiangxi 330022, People's Republic of China
| | - Qian Huang
- College of Life Science and Key Laboratory of Small Functional Organic Molecule, Ministry of Education, Jiangxi Normal University , Nanchang, Jiangxi 330022, People's Republic of China
| | - Mei-Zhen Lin
- College of Life Science and Key Laboratory of Small Functional Organic Molecule, Ministry of Education, Jiangxi Normal University , Nanchang, Jiangxi 330022, People's Republic of China
| | - Chong Ou-Yang
- College of Life Science and Key Laboratory of Small Functional Organic Molecule, Ministry of Education, Jiangxi Normal University , Nanchang, Jiangxi 330022, People's Republic of China
| | - Wen-Yang Huang
- College of Life Science and Key Laboratory of Small Functional Organic Molecule, Ministry of Education, Jiangxi Normal University , Nanchang, Jiangxi 330022, People's Republic of China
| | - Ying-Xia Wang
- College of Life Science and Key Laboratory of Small Functional Organic Molecule, Ministry of Education, Jiangxi Normal University , Nanchang, Jiangxi 330022, People's Republic of China
| | - Kai-Li Xu
- College of Life Science and Key Laboratory of Small Functional Organic Molecule, Ministry of Education, Jiangxi Normal University , Nanchang, Jiangxi 330022, People's Republic of China
| | - Hui-Ling Feng
- Zigong Innovation Center of Zhejiang University , Zigong, Sichuan 643000, China
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Wang T, Ma B, Jin A, Li X, Zhang X, Wang W, Cai Y. Facile loading of Ag nanoparticles onto magnetic microsphere by the aid of a tannic acid-Metal polymer layer to synthesize magnetic disinfectant with high antibacterial activity. J Hazard Mater 2018; 342:392-400. [PMID: 28850917 DOI: 10.1016/j.jhazmat.2017.08.047] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2017] [Revised: 08/01/2017] [Accepted: 08/16/2017] [Indexed: 06/07/2023]
Abstract
In this article, Ag nanoparticles (NPs) were easily loaded onto magnetic material through a tannic acid-metal polymer (PTA) intermedia layer to synthesize Fe3O4@PTA@Ag magnetic composite and the potential application as bactericidal agent for water disinfection was investigated. The as-obtained composite, with a Fe3O4 core of 150nm, has plenty of Ag NPs of 15nm adhered onto the PTA layer outside the core. The PTA layer, like the famous polydopamine complex, possesses excellent adhesive capacity to load more Ag NPs tightly and has specific antibacterial activity due to the numerous catechol groups. Therefore, remarkable bactericidal activity was achieved and 31.25mgL-1 of Fe3O4@PTA@Ag disinfectant could inactivate more than 99% of the tested strains within 60min. At the same time, the catechol groups also endow the PTA layer with reduction ability so that additional reductant is unnecessary during the formation of Ag NPs and the PTA complex can be fabricated much more rapidly. As a result, the magnetic composite can be synthesized simply with less cost. Moreover, the composite has a high magnetic saturation value of 55.47emug-1 owing to the Fe3O4 core and the magnetic separation ability can play an important role in the recovery of the disinfectant.
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Affiliation(s)
- Tao Wang
- College of Life Science, North China University of Science and Technology, Tangshan, 063000, Hebei province, China
| | - Binbin Ma
- College of Life Science, North China University of Science and Technology, Tangshan, 063000, Hebei province, China
| | - Awei Jin
- College of Life Science, North China University of Science and Technology, Tangshan, 063000, Hebei province, China
| | - Xiaogang Li
- College of Life Science, North China University of Science and Technology, Tangshan, 063000, Hebei province, China
| | - Xiaole Zhang
- College of Life Science, North China University of Science and Technology, Tangshan, 063000, Hebei province, China.
| | - Weijie Wang
- College of Life Science, North China University of Science and Technology, Tangshan, 063000, Hebei province, China
| | - Yaqi Cai
- State Key Laboratory of Environmental Chemistry and Ecotoxicology of Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
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