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Andreica BI, Mititelu-Tartau L, Rosca I, Pelin IM, Nicol E, Marin L. Biocompatible hydrogels based on quaternary ammonium salts of chitosan with high antimicrobial activity as biocidal agents for disinfection. Carbohydr Polym 2024; 342:122389. [PMID: 39048229 DOI: 10.1016/j.carbpol.2024.122389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Revised: 05/27/2024] [Accepted: 06/08/2024] [Indexed: 07/27/2024]
Abstract
The paper reports new hydrogels based on quaternary ammonium salts of chitosan designed as biocidal products. The chitosan derivative was crosslinked with salicylaldehyde via reversible imine bonds and supramolecular self-assemble to give dynamic hydrogels which respond to environmental stimuli. The crosslinking mechanism was demonstrated by 1H NMR and FTIR spectroscopy, and X-ray diffraction and polarized light microscopy. The hydrogel nature, self-healing and thixotropy were proved by rheological investigation and visual observation, and their morphology was assessed by scanning electron microscopy. The relevant properties for application as biocidal products, such as swelling, dissolution, bioadhesiveness, antimicrobial activity and ex-vivo hemocompatibility and in vivo local toxicity and biocompatibility on experimental mice were measured and analyzed in relationship with the imination degree and the influence of each component. It was found that the hydrogels are superabsorbent, have good adhesivity to skin and various surfaces and antimicrobial activity against relevant gram-positive and gram-negative bacteria, while being hemocompatible and biocompatible. Besides, the hydrogels are easily biodegraded in soil. All these properties recommend the studied hydrogels as ecofriendly biocidal agents for living tissues and surfaces, but also open the perspectives of their use as platform for in vivo applications in tissue engineering, wound healing, or drug delivery systems.
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Affiliation(s)
| | | | - Irina Rosca
- "Petru Poni" Institute of Macromolecular Chemistry of Romanian Academy, Iasi, Romania
| | - Irina Mihaela Pelin
- "Petru Poni" Institute of Macromolecular Chemistry of Romanian Academy, Iasi, Romania
| | - Erwan Nicol
- Institut des Molécules et Matériaux du Mans, France
| | - Luminita Marin
- "Petru Poni" Institute of Macromolecular Chemistry of Romanian Academy, Iasi, Romania
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2
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Gao F, Wang Y, Liu B, Du J, Wang T, Yu D. Quercetin on the properties of rice bran oil body: Focused surface charge, oxidative stability and digestive properties. Food Chem 2024; 455:139927. [PMID: 38843714 DOI: 10.1016/j.foodchem.2024.139927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2024] [Revised: 05/09/2024] [Accepted: 05/29/2024] [Indexed: 07/10/2024]
Abstract
To further enhance the stability of rice bran oil body (RBOB) emulsions, this study examined the impact of various concentrations of quercetin (QU) on the microstructure, rheological properties, oxidative stability, and digestive properties of RBOB emulsions. The results indicated that by incorporating QU concentration, the particle size of RBOB emulsions could be significantly reduced to 300 nm; QU could improve the surface hydrophobicity, the emulsifying activity index and emulsification stability index of RBOB emulsions of 550, 0.078 m2/g and 50.78 min, respectively; the storage stability of RBOB emulsions was further improved; the higher concentration of QU could delay the oxidation of RBOB emulsions, among which, the 500 μmol/L concentration inhibited the strongest effect of oil oxidation. It also improved the thermal stability of RBOB emulsions. After gastrointestinal digestion, the free fatty acids release rate of RBOB emulsions with QU addition decreased to 14.68%, and RBOB emulsions were slowly hydrolyzed. Therefore, adding QU to RBOB helps to improve its stability and delay digestion.
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Affiliation(s)
- Fei Gao
- School of Food Science, Northeast Agricultural University, Harbin 150030, China
| | - Yaguang Wang
- School of Food Science, Northeast Agricultural University, Harbin 150030, China
| | - Boyu Liu
- School of Food Science, Northeast Agricultural University, Harbin 150030, China
| | - Jing Du
- School of Food Science, Northeast Agricultural University, Harbin 150030, China.
| | - Tong Wang
- School of Food Science, Northeast Agricultural University, Harbin 150030, China.
| | - Dianyu Yu
- School of Food Science, Northeast Agricultural University, Harbin 150030, China
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3
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Tao R, Wang Y, Zhang N, Zhang L, Khan MS, Xu H, Zhao J, Qi Z, Chen Y, Lu Y, Wang K, Wang Y, Jiang J. Bioactive chitosan-citral Schiff base zinc complex: A pH-responsive platform for potential therapeutic applications. Int J Biol Macromol 2024; 261:129857. [PMID: 38307438 DOI: 10.1016/j.ijbiomac.2024.129857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 01/16/2024] [Accepted: 01/29/2024] [Indexed: 02/04/2024]
Abstract
The application of CO2 supercritical fluid (SCF) technology has developed rapidly because of its non-toxic, environmentally friendly, mild reaction conditions and safety. The SCF technology can effectively speed up the reaction process of nano-material synthesis, and maintains a high degree of controllability and repeatability. This study mainly included carboxymethyl chitosan sodium salt (CCS), citral (CT), p-coumaric acid (CA), and ZnSO4 as raw materials to prepare CCS-CT-CA-Zn complex as a pH-responsive agent and was investigated using supercritical fluid technique. The coordination structure of Bridge-CCS-CT-CH3COO-CA-Zn-Schiff base/OH and the morphology of the complex agents were verified. The prepared CCS-CT-CA-Zn complex showed good dispersion and uniformity (mean size: 852 ± 202 nm, PdI: 0.301, and mean zeta potential: -31 ± 6 mV). Also, it has a good pH responsive release in an acid environment. Besides, both of CCS-CT-CA-Zn complex (DS-B) and its decomposed mixture in acid (DS-A) demonstrated significant antioxidant and anti-vibrio activity. Moreover, both DS-B complex and DS-A mixture inhibited biofilm formation, swimming, and swarming motilities of V. parahaemolyticus in a dose-dependent manner. This work will provide a scientific basis for the further design and development of natural products derived antibacterial-antioxidant complex agents, food additives and feed additives.
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Affiliation(s)
- Ran Tao
- Institute of Chemical Industry of Forest Products, CAF, Nanjing 210042, Jiangsu Province, China
| | - Yinjuan Wang
- Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing 210002, Jiangsu Province, China
| | - Ning Zhang
- Institute of Chemical Industry of Forest Products, CAF, Nanjing 210042, Jiangsu Province, China
| | | | | | - Hao Xu
- Institute of Chemical Industry of Forest Products, CAF, Nanjing 210042, Jiangsu Province, China
| | - Jian Zhao
- Institute of Chemical Industry of Forest Products, CAF, Nanjing 210042, Jiangsu Province, China.
| | - Zhiwen Qi
- Institute of Chemical Industry of Forest Products, CAF, Nanjing 210042, Jiangsu Province, China
| | - Yicun Chen
- Research Institute of Subtropical Forestry, CAF, Hangzhou 311400, Zhejiang Province, China
| | - Yin Lu
- Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing 210002, Jiangsu Province, China
| | - Kui Wang
- Institute of Chemical Industry of Forest Products, CAF, Nanjing 210042, Jiangsu Province, China; Huaqiao University, Xiamen 361000, Fujian Province, China.
| | - Yangdong Wang
- Chinese Academy of Forestry Sciences, Beijing 100091, PR China
| | - Jianchun Jiang
- Institute of Chemical Industry of Forest Products, CAF, Nanjing 210042, Jiangsu Province, China; Huaqiao University, Xiamen 361000, Fujian Province, China.
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Liu W, Qin Y, Liu S, Xing R, Yu H, Li P. Synthesis and Characterization of Slow-Release Chitosan Oligosaccharide Pyridine Schiff Base Copper Complexes with Antifungal Activity. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:3872-3883. [PMID: 38358096 DOI: 10.1021/acs.jafc.3c04601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/16/2024]
Abstract
Herein, a series of chitosan oligosaccharide copper complexes modified with pyridine groups (CPSx-Cu complexes) were successfully prepared via the Schiff base reaction and ion complexation reaction for slow-release fungicide. The structures of the synthesized derivatives were characterized via Fourier transform infrared spectroscopy and 1H and 13C nuclear magnetic resonance spectroscopy, and the unit configuration of the complexes was calculated using Gaussian software. The slow-release performance experiment demonstrated that the cumulative copper ion release rate of CPSx-Cu complexes was dependent on the type of substituents on the pyridine ring. Furthermore, the in vitro and in vivo antifungal activities of the CPSx-Cu complexes were investigated. At a concentration of 0.4 mg/mL, CPSx-Cu complexes completely inhibited the growth of Pythium vexans and Phytophthora capsici. Results indicated that CPSx-Cu complexes with slow-release ability exhibited better antifungal activity than thiodiazole-copper and copper sulfate basic. This study confirmed that combining chitosan oligosaccharide with bioactive pyridine groups and copper ions is an effective approach to further developing slow-release copper fungicides, providing new possibilities for the application of copper fungicides in green agriculture. This study lays the foundation for further studies on biogreen copper fungicides.
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Affiliation(s)
- Weixiang Liu
- CAS and Shandong Province Key Laboratory of Experimental Marine Biology, Center for Ocean Mega-Science, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
| | - Yukun Qin
- CAS and Shandong Province Key Laboratory of Experimental Marine Biology, Center for Ocean Mega-Science, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
- Laboratory for Marine Drugs and Bioproducts, Pilot National Laboratory for Marine Science and Technology (Qingdao), No. 1 Wenhai Road, Qingdao 266237, China
| | - Song Liu
- CAS and Shandong Province Key Laboratory of Experimental Marine Biology, Center for Ocean Mega-Science, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
- Laboratory for Marine Drugs and Bioproducts, Pilot National Laboratory for Marine Science and Technology (Qingdao), No. 1 Wenhai Road, Qingdao 266237, China
| | - Ronge Xing
- CAS and Shandong Province Key Laboratory of Experimental Marine Biology, Center for Ocean Mega-Science, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
- Laboratory for Marine Drugs and Bioproducts, Pilot National Laboratory for Marine Science and Technology (Qingdao), No. 1 Wenhai Road, Qingdao 266237, China
| | - Huahua Yu
- CAS and Shandong Province Key Laboratory of Experimental Marine Biology, Center for Ocean Mega-Science, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
- Laboratory for Marine Drugs and Bioproducts, Pilot National Laboratory for Marine Science and Technology (Qingdao), No. 1 Wenhai Road, Qingdao 266237, China
| | - Pengcheng Li
- CAS and Shandong Province Key Laboratory of Experimental Marine Biology, Center for Ocean Mega-Science, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
- Laboratory for Marine Drugs and Bioproducts, Pilot National Laboratory for Marine Science and Technology (Qingdao), No. 1 Wenhai Road, Qingdao 266237, China
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Liaqat F, Xu L, Khazi MI, Ali S, Rahman MU, Zhu D. Extraction, purification, and applications of vanillin: A review of recent advances and challenges. INDUSTRIAL CROPS AND PRODUCTS 2023; 204:117372. [DOI: 10.1016/j.indcrop.2023.117372] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/23/2024]
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Sripetthong S, Nalinbenjapun S, Basit A, Surassmo S, Sajomsang W, Ovatlarnporn C. Preparation of Self-Assembled, Curcumin-Loaded Nano-Micelles Using Quarternized Chitosan-Vanillin Imine (QCS-Vani Imine) Conjugate and Evaluation of Synergistic Anticancer Effect with Cisplatin. J Funct Biomater 2023; 14:525. [PMID: 37888190 PMCID: PMC10607333 DOI: 10.3390/jfb14100525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2023] [Revised: 10/08/2023] [Accepted: 10/12/2023] [Indexed: 10/28/2023] Open
Abstract
Nano-micelles are self-assembling colloidal dispersions applied to enhance the anticancer efficacy of chemotherapeutic agents. In this study, the conjugate of quarternized chitosan and vanillin imine (QCS-Vani imine) was synthesized using the reaction of a Schiff base characterized by proton-NMR (1HNMR), UV-Vis spectroscopy, and FT-IR. The critical micelle concentration (CMC), particle size, and zeta potential of the resulting product were determined. The QCS-Vani imine conjugate was used as a carrier for the development of curcumin-loaded nano-micelles, and their entrapment efficiency (%EE), drug-loading capacity (%LC) and in vitro release were investigated using HPLC analysis. Moreover, the nano-micelles containing curcumin were combined with various concentrations of cisplatin and evaluated for a possible anticancer synergistic effect. The anticancer activity was evaluated against lung cancer A549 and mouse fibroblast L929 cell lines. The percent yield (%) of the QCS-Vani imine conjugate was 93.18%. The curcumin-loaded QCS-Vani imine nano-micelles were characterized and found to have a spherical shape (by TEM) with size < 200 nm (by DLS) with high %EE up to 67.61% and %LC up to 6.15 ± 0.41%. The loaded lyophilized powder of the nano-micelles was more stable at 4 °C than at room temperature during 120 days of storage. pH-sensitive release properties were observed to have a higher curcumin release at pH 5.5 (cancer environment) than at pH 7.4 (systemic environment). Curcumin-loaded QCS-Vani imine nano-micelles showed higher cytotoxicity and selectivity toward lung cancer A549 cell lines and exhibited lower toxicity toward the normal cell (H9C2) than pure curcumin. Moreover, the curcumin-loaded QCS-Vani imine nano-micelles exhibited an enhanced property of inducing cell cycle arrest during the S-phase against A549 cells and showed prominently induced apoptosis in lung cancer cells compared to that with curcumin. The co-treatment of cisplatin with curcumin-loaded QCS-Vani imine nano-micelles presented an enhanced anticancer effect, showing 8.66 ± 0.88 μM as the IC50 value, in comparison to the treatment with cisplatin alone (14.22 ± 1.01 μM). These findings suggest that the developed QCS-Vani imine nano-micelle is a potential drug delivery system and could be a promising approach for treating lung cancer in combination with cisplatin.
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Affiliation(s)
- Sasikarn Sripetthong
- Department of Pharmaceutical Chemistry, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Hat Yai 90112, Thailand; (S.S.); (S.N.); (A.B.)
- Drug Delivery System Excellent Center, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Hat Yai 90112, Thailand
| | - Sirinporn Nalinbenjapun
- Department of Pharmaceutical Chemistry, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Hat Yai 90112, Thailand; (S.S.); (S.N.); (A.B.)
- Drug Delivery System Excellent Center, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Hat Yai 90112, Thailand
| | - Abdul Basit
- Department of Pharmaceutical Chemistry, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Hat Yai 90112, Thailand; (S.S.); (S.N.); (A.B.)
- Drug Delivery System Excellent Center, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Hat Yai 90112, Thailand
| | - Suvimol Surassmo
- Nano-Delivery System Laboratory, National Nanotechnology Center, National Science and Technology Development Agency, Thailand Science Park, Pathum Thani 12120, Thailand; (S.S.); (W.S.)
| | - Warayuth Sajomsang
- Nano-Delivery System Laboratory, National Nanotechnology Center, National Science and Technology Development Agency, Thailand Science Park, Pathum Thani 12120, Thailand; (S.S.); (W.S.)
| | - Chitchamai Ovatlarnporn
- Department of Pharmaceutical Chemistry, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Hat Yai 90112, Thailand; (S.S.); (S.N.); (A.B.)
- Drug Delivery System Excellent Center, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Hat Yai 90112, Thailand
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Khalil TE, Abdel-Salam AH, Mohamed LA, El-Meligy E, El-Dissouky A. Crosslinked modified chitosan biopolymer for enhanced removal of toxic Cr(VI) from aqueous solution. Int J Biol Macromol 2023; 234:123719. [PMID: 36801217 DOI: 10.1016/j.ijbiomac.2023.123719] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2022] [Revised: 01/27/2023] [Accepted: 02/13/2023] [Indexed: 02/18/2023]
Abstract
Two new crosslinked modified chitosan biopolymers, namely (CTS-VAN) and (Fe3O4@CTS-VAN) bioadsorbents were prepared starting from chitosan and 4-hydroxy-3-methoxybenzaldehyde (VAN) in presence of epichlorohydrin. The analytical techniques FT-IR, EDS, XRD, SEM and XPS besides BET surface analysis were utilized for full characterization of the bioadsorbents. Batch experiments were conducted to study the effect of various influencing parameters in Cr (VI) removal such as initial pH, contact time, adsorbent amount and initial Cr (VI) concentration. The adsorption of Cr (VI) was found out to be maximum at pH = 3 for both bioadsorbents. Langmuir isotherm fit well the adsorption process with a maximum adsorption capacity of 188.68 and 98.04 mg/g for CTS-VAN and Fe3O4@CTS-VAN, respectively. The adsorption process followed pseudo second-order kinetics with R2 values of 1 and 0.9938 for CTS-VAN and Fe3O4@CTS-VAN, respectively. X-ray photoelectron spectroscopy (XPS) analysis showed that Cr(III) accounted for 83 % of the total Cr bound to bioadsorbents surface, which indicated reductive adsorption was responsible for Cr(VI) removal by the bioadsorbents. Cr(VI) was initially adsorbed on the positively charged surface of the bioadsorbents and reduced to Cr(III) by electrons provided by oxygen-comprising functional groups (e.g., CO), and consequently part of the converted Cr(III) stayed on the surface and the rest released into solution.
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Affiliation(s)
- Tarek E Khalil
- Chemistry Department, Faculty of Science, Alexandria University, Alexandria, Egypt.
| | - Ahmed H Abdel-Salam
- Chemistry Department, Faculty of Science, Alexandria University, Alexandria, Egypt; Chemistry Department, Faculty of Science, University of Jeddah, P.O. Box 80327, Jeddah 21589, Saudi Arabia
| | - Laila A Mohamed
- National Institute of Oceanography and Fisheries(NIOF), Egypt
| | - Esraa El-Meligy
- Chemistry Department, Faculty of Science, Alexandria University, Alexandria, Egypt
| | - Ali El-Dissouky
- Chemistry Department, Faculty of Science, Alexandria University, Alexandria, Egypt
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Tao R, Zhang N, Zhang L, Habumugisha T, Chen Y, Lu Y, Wang Y, Wang K, Wang Y, Jiang J. Characterization and antivibrio activity of chitosan-citral Schiff base calcium complex for a calcium citrate sustained release antibacterial agent. Int J Biol Macromol 2023; 239:124355. [PMID: 37023879 DOI: 10.1016/j.ijbiomac.2023.124355] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 03/31/2023] [Accepted: 04/03/2023] [Indexed: 04/08/2023]
Abstract
Vibrio parahemolyticus is the "Number one killer" of seafood products. Anti-vibrio agents having low cost and high-safety are urgently needed to supplement the application needs. This work attempted to prepare CS-CT-CCa complex with citral (CT), chitosan (CS) and calcium citrate (CCa) as raw material by microwave-assisted high-pressure homogenization. Additionally the coordination structure and morphology of Bridge-CS-CT-Schiff base/OH-CCa were verified. The prepared CS-CT-CCa had a well-dispersed property (the size: 3.55~9.33 μm and the zeta potential: +38.7~+67.5 mV) and an excellent sustained released ability (sustained release up to 180 min). MIC, Glucose assay, MDA assay, biofilm formation inhibition assay, SEM, swimming and swarming motility assay demonstrated that CS-CT-CCa had strong (MIC of 128 μg/ml) and sustained (more than 12 h) inhibitory effects against V. parahaemolyticus. Meanwhile, CS-CT-CCa could increase the membrane permeability of V. parahaemolyticus and inhibit their biofilm-forming ability in a dose-dependent manner. It could be inferred that the antibacterial activities against V. parahaemolyticus caused inhibition of biofilm formation, swimming and swarming motilities. This study provided necessary data for the further design and development of chitosan antibacterial agents, food and feed additives.
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Affiliation(s)
- Ran Tao
- Institute of Chemical Industry of Forest Products, CAF, Nanjing 210042, Jiangsu Province, China
| | - Ning Zhang
- Institute of Chemical Industry of Forest Products, CAF, Nanjing 210042, Jiangsu Province, China.
| | | | - Théogène Habumugisha
- Key Lab of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yicun Chen
- Research Institute of Subtropical Forestry, CAF, Hangzhou 311400, Zhejiang Province, China
| | - Yin Lu
- Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing 210002, Jiangsu Province, China
| | - Yinjuan Wang
- Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing 210002, Jiangsu Province, China.
| | - Kui Wang
- Institute of Chemical Industry of Forest Products, CAF, Nanjing 210042, Jiangsu Province, China; Huaqiao University, Xiamen 361000, Fujian Province, China
| | - Yangdong Wang
- Chinese Academy of Forestry Sciences, Beijing 100091, China
| | - Jianchun Jiang
- Institute of Chemical Industry of Forest Products, CAF, Nanjing 210042, Jiangsu Province, China; Huaqiao University, Xiamen 361000, Fujian Province, China
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Park GR, Gwak MA, Choi YH, Park WH. pH-sensitive gallol-rich chitosan hydrogel beads for on-off controlled drug delivery. Int J Biol Macromol 2023; 240:124346. [PMID: 37028624 DOI: 10.1016/j.ijbiomac.2023.124346] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 03/21/2023] [Accepted: 04/02/2023] [Indexed: 04/08/2023]
Abstract
Malignant tumors have emerged as a serious health issue, and the interest in developing pH-sensitive polymers for site-specific drug delivery has increased. The physical and/or chemical properties of pH-sensitive polymers depend on the pH, and thus, drugs can be released by cleaving dynamic covalent and/or noncovalent bonds. In this study, gallic acid (GA) was conjugated to chitosan (CS) to prepare self-crosslinked hydrogel beads containing Schiff base (imine bond) crosslinks. The CS-GA hydrogel beads were formed by the dropwise addition of the CS-GA conjugate solution into a Tris-HCl buffer solution (TBS, pH 8.5). The pH-sensitivity of pristine CS was significantly enhanced following the introduction of GA moiety, and as a result, the CS-GA hydrogel beads swelled more than approximately 5000 % at pH 4.0, indicating an excellent swelling/deswelling ability of the beads at different pH (pH 4.0 and 8.5). The reversible breakage/recovery of the imine crosslinks in the CS-GA hydrogel beads was confirmed through X-ray photoelectron spectroscopic and rheological studies. Finally, Rhodamine B was loaded onto the hydrogel beads as a model drug to investigate the pH-sensitive drug release behavior. At pH 4, the drug was released up to approximately 83 % within 12 h. The findings indicate that the CS-GA hydrogel beads have great potential as a drug delivery system that is sensitive to acidic tumor sites in the body.
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Effects of Chitosan-Based Ca2+ on Softening and Browning of Custard Apple Fruit During Postharvest Storage. FOOD BIOPROCESS TECH 2023. [DOI: 10.1007/s11947-023-03045-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2023]
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11
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Marjanović JS, Ćoćić D, Caković AZ, Petrović N, Kosanić M, Kostić MD, Divac VM. Seleno‐L‐cystine and Vanillin Schiff's base: Synthesis, Reaction Mechanism and Biological activity. ChemistrySelect 2023. [DOI: 10.1002/slct.202204603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Jovana S Marjanović
- Department of Chemistry Faculty of Science University of Kragujevac Radoja Domanovica 12 34 000 Kragujevac Serbia
| | - Dušan Ćoćić
- Department of Chemistry Faculty of Science University of Kragujevac Radoja Domanovica 12 34 000 Kragujevac Serbia
| | - Angelina Z Caković
- Department of Chemistry Faculty of Science University of Kragujevac Radoja Domanovica 12 34 000 Kragujevac Serbia
| | - Nevena Petrović
- Department of Biology and Ecology Faculty of Science University of Kragujevac Radoja Domanovica 12 34 000 Kragujevac Serbia
| | - Marijana Kosanić
- Department of Biology and Ecology Faculty of Science University of Kragujevac Radoja Domanovica 12 34 000 Kragujevac Serbia
| | - Marina D Kostić
- Institute for Information Technologies Kragujevac University of Kragujevac Jovana Cvijića bb 34 000 Kragujevac Serbia
| | - Vera M Divac
- Department of Chemistry Faculty of Science University of Kragujevac Radoja Domanovica 12 34 000 Kragujevac Serbia
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12
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Farooq S, Ahmad MI, Zhang Y, Zhang H. Impact of interfacial layer number and Schiff base cross-linking on the microstructure, rheological properties and digestive lipolysis of plant-derived oil bodies-based oleogels. Food Hydrocoll 2023. [DOI: 10.1016/j.foodhyd.2023.108473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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13
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Synthesis and Structural investigation of o-Vanillin scaffold Schiff base metal complexes: Biomolecular interaction and molecular docking studies. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
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14
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Effect of molecular weight of chitosan on properties of chitosan-Zn nanoparticles. FOOD BIOSCI 2022. [DOI: 10.1016/j.fbio.2022.102206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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15
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Liu Y, Shan H, Pang Y, Zhan H, Zeng C. Iron modified chitosan/coconut shell activated carbon composite beads for Cr(VI) removal from aqueous solution. Int J Biol Macromol 2022; 224:156-169. [DOI: 10.1016/j.ijbiomac.2022.10.112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 10/03/2022] [Accepted: 10/12/2022] [Indexed: 11/05/2022]
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Policastro D, Giorno E, Scarpelli F, Godbert N, Ricciardi L, Crispini A, Candreva A, Marchetti F, Xhafa S, De Rose R, Nucera A, Barberi RC, Castriota M, De Bartolo L, Aiello I. New Zinc-Based Active Chitosan Films: Physicochemical Characterization, Antioxidant, and Antimicrobial Properties. Front Chem 2022; 10:884059. [PMID: 35711963 PMCID: PMC9194505 DOI: 10.3389/fchem.2022.884059] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 04/13/2022] [Indexed: 11/13/2022] Open
Abstract
The improvement of the antioxidant and antimicrobial activities of chitosan (CS) films can be realized by incorporating transition metal complexes as active components. In this context, bioactive films were prepared by embedding a newly synthesized acylpyrazolonate Zn(II) complex, [Zn(QPhtBu)2(MeOH)2], into the eco-friendly biopolymer CS matrix. Homogeneous, amorphous, flexible, and transparent CS@Znn films were obtained through the solvent casting method in dilute acidic solution, using different weight ratios of the Zn(II) complex to CS and characterized by powder X-ray diffraction (PXRD), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), Fourier transform infrared (FT-IR), Raman, and scanning electron microscopy (SEM) techniques. The X-ray single-crystal analysis of [Zn(QPhtBu)2(MeOH)2] and the evaluation of its intermolecular interactions with a protonated glucosamine fragment through hydrogen bond propensity (HBP) calculations are reported. The effects of the different contents of the [Zn(QPhtBu)2(MeOH)2] complex on the CS biological proprieties have been evaluated, proving that the new CS@Znn films show an improved antioxidant activity, tested according to the DPPH method, with respect to pure CS, related to the concentration of the incorporated Zn(II) complex. Finally, the CS@Znn films were tried out as antimicrobial agents, showing an increase in antimicrobial activity against Gram-positive bacteria (Staphylococcus aureus) with respect to pure CS, when detected by the agar disk-diffusion method.
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Affiliation(s)
- Debora Policastro
- MAT-INLAB (Laboratorio di Materiali Molecolari Inorganici) and LASCAMM - CR INSTM, Unità INSTM of Calabria, Department of Chemistry and Chemical Technologies, University of Calabria Ponte Bucci, Rende, Italy
| | - Eugenia Giorno
- MAT-INLAB (Laboratorio di Materiali Molecolari Inorganici) and LASCAMM - CR INSTM, Unità INSTM of Calabria, Department of Chemistry and Chemical Technologies, University of Calabria Ponte Bucci, Rende, Italy
| | - Francesca Scarpelli
- MAT-INLAB (Laboratorio di Materiali Molecolari Inorganici) and LASCAMM - CR INSTM, Unità INSTM of Calabria, Department of Chemistry and Chemical Technologies, University of Calabria Ponte Bucci, Rende, Italy
| | - Nicolas Godbert
- MAT-INLAB (Laboratorio di Materiali Molecolari Inorganici) and LASCAMM - CR INSTM, Unità INSTM of Calabria, Department of Chemistry and Chemical Technologies, University of Calabria Ponte Bucci, Rende, Italy
| | - Loredana Ricciardi
- MAT-INLAB (Laboratorio di Materiali Molecolari Inorganici) and LASCAMM - CR INSTM, Unità INSTM of Calabria, Department of Chemistry and Chemical Technologies, University of Calabria Ponte Bucci, Rende, Italy.,CNR NANOTEC- Institute of Nanotechnology U.O.S. Cosenza, Rende, Italy
| | - Alessandra Crispini
- MAT-INLAB (Laboratorio di Materiali Molecolari Inorganici) and LASCAMM - CR INSTM, Unità INSTM of Calabria, Department of Chemistry and Chemical Technologies, University of Calabria Ponte Bucci, Rende, Italy
| | - Angela Candreva
- MAT-INLAB (Laboratorio di Materiali Molecolari Inorganici) and LASCAMM - CR INSTM, Unità INSTM of Calabria, Department of Chemistry and Chemical Technologies, University of Calabria Ponte Bucci, Rende, Italy
| | - Fabio Marchetti
- School of Science and Technology Chemistry Section, University of Camerino, Macerata, Italy
| | - Sonila Xhafa
- School of Science and Technology Chemistry Section, University of Camerino, Macerata, Italy
| | - Renata De Rose
- LAB CF-INABEC Department of Chemistry and Chemical Technologies, University of Calabria, Rende, Italy
| | - Antonello Nucera
- Department of Physics, University of Calabria Ponte Bucci, Rende, Italy
| | - Riccardo C Barberi
- CNR NANOTEC- Institute of Nanotechnology U.O.S. Cosenza, Rende, Italy.,Department of Physics, University of Calabria Ponte Bucci, Rende, Italy
| | - Marco Castriota
- CNR NANOTEC- Institute of Nanotechnology U.O.S. Cosenza, Rende, Italy.,Department of Physics, University of Calabria Ponte Bucci, Rende, Italy
| | - Loredana De Bartolo
- Institute on Membrane Technology, National Research Council of Italy, C/o University of Calabria, Rende, Italy
| | - Iolinda Aiello
- MAT-INLAB (Laboratorio di Materiali Molecolari Inorganici) and LASCAMM - CR INSTM, Unità INSTM of Calabria, Department of Chemistry and Chemical Technologies, University of Calabria Ponte Bucci, Rende, Italy.,CNR NANOTEC- Institute of Nanotechnology U.O.S. Cosenza, Rende, Italy
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Crystal structure of ( E)-amino(2-(3-ethoxy-4-hydroxybenzylidene)hydrazineyl)methaniminium nitrate hemihydrate C 10H 16N 5O 5.5. Z KRIST-NEW CRYST ST 2022. [DOI: 10.1515/ncrs-2022-0090] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
C10H16N5O5.5, monoclinic, C2/c (no. 15), a = 17.7836(8) Å, b = 9.4796(4) Å, c = 15.8740(8) Å, β = 97.093(5)°, V = 2655.6(2) Å3, Z = 8, R
gt
(F) = 0.0469, wR
ref
(F
2) = 0.1289, T = 170 K.
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