1
|
Dong H, Xu Y, Zhang Q, Li H, Chen L. Activity and safety evaluation of natural preservatives. Food Res Int 2024; 190:114548. [PMID: 38945593 DOI: 10.1016/j.foodres.2024.114548] [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: 12/08/2023] [Revised: 02/29/2024] [Accepted: 05/25/2024] [Indexed: 07/02/2024]
Abstract
Synthetic preservatives are widely used in the food industry to control spoilage and growth of pathogenic microorganisms, inhibit lipid oxidation processes and extend the shelf life of food. However, synthetic preservatives have some side effects that can lead to poisoning, cancer and other degenerative diseases. With the improvement of living standards, people are developing safer natural preservatives to replace synthetic preservatives, including plant derived preservatives (polyphenols, essential oils, flavonoids), animal derived preservatives (lysozyme, antimicrobial peptide, chitosan) and microorganism derived preservatives (nisin, natamycin, ε-polylysine, phage). These natural preservatives exert antibacterial effects by disrupting microbial cell wall/membrane structures, interfering with DNA/RNA replication and transcription, and affecting protein synthesis and metabolism. This review summarizes the natural bioactive compounds (polyphenols, flavonoids and terpenoids, etc.) in these preservatives, their antioxidant and antibacterial activities, and safety evaluation in various products.
Collapse
Affiliation(s)
- Huiying Dong
- Wuya College of Innovation, Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Yang Xu
- Wuya College of Innovation, Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Qingqing Zhang
- Wuya College of Innovation, Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Hua Li
- Wuya College of Innovation, Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China; Institute of Structural Pharmacology & TCM Chemical Biology, Fujian Key Laboratory of Chinese Materia Medica, College of Pharmacy, Fujian University of Traditional Chinese Medicine, Fuzhou 350122, China.
| | - Lixia Chen
- Wuya College of Innovation, Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China.
| |
Collapse
|
2
|
Yin X, Wusigale, Cheng H, Van der Meeren P, Liang L. The mechanism of resveratrol stabilization and degradation by synergistic interactions between constituent proteins of whey protein. Food Res Int 2024; 188:114485. [PMID: 38823871 DOI: 10.1016/j.foodres.2024.114485] [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: 03/07/2024] [Revised: 05/02/2024] [Accepted: 05/07/2024] [Indexed: 06/03/2024]
Abstract
Whey protein isolate (WPI) is mainly composed of β-lactoglobulin (β-LG), α-lactalbumin (α-LA) and bovine serum albumin (BSA). The aim of this study was to compare and analyze the influence of WPI and its three main constituent proteins, as well as proportionally reconstituted WPI (R-WPI) on resveratrol. It was found that the storage stability of resveratrol was protected by WPI, not affected by R-WPI, but reduced by individual whey proteins at 45°C for 30 days. The rank of accelerated degradation of resveratrol by individual whey proteins was BSA > α-LA > β-LG. The antioxidant activity, localization of resveratrol and oxidation of carrier proteins were determined by ABTS, H2O2 assay, synchronous fluorescence, carbonyl and circular dichroism. The non-covalent interactions and disulfide bonds between constituent proteins improved the antioxidant activity of the R-WPI-resveratrol complex, the oxidation stability of the carrier and the solvent shielding effect on resveratrol, which synergistically inhibited the degradation of resveratrol in R-WPI system. The results gave insight into elucidating the interaction mechanism of resveratrol with protein carriers.
Collapse
Affiliation(s)
- Xin Yin
- State Key Lab of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China; Particle and Interfacial Technology Group, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000 Gent, Belgium
| | - Wusigale
- Key Laboratory of Dairy Biotechnology and Engineering, Ministry of Education, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia, China
| | - Hao Cheng
- State Key Lab of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China
| | - Paul Van der Meeren
- Particle and Interfacial Technology Group, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000 Gent, Belgium
| | - Li Liang
- State Key Lab of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China.
| |
Collapse
|
3
|
Wnuk E, Zwolak I, Kochanowicz E. The physiological levels of epigallocatechin gallate (EGCG) enhance the Cd-induced oxidative stress and apoptosis in CHO-K1 cells. Sci Rep 2024; 14:13625. [PMID: 38871787 DOI: 10.1038/s41598-024-64478-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Accepted: 06/10/2024] [Indexed: 06/15/2024] Open
Abstract
Currently, the increasing pollution of the environment by heavy metals is observed, caused both by natural factors and those related to human activity. They pose a significant threat to human health and life. It is therefore important to find an effective way of protecting organisms from their adverse effects. One potential product showing a protective effect is green tea. It has been shown that EGCG, which is found in large amounts in green tea, has strong antioxidant properties and can therefore protect cells from the adverse effects of heavy metals. Therefore, the aim of the study was to investigate the effect of EGCG on cells exposed to Cd. In the study, CHO-K1 cells (Chinese hamster ovary cell line) were treated for 24 h with Cd (5 and 10 µM) and EGCG (0.5 and 1 µM) together or separately. Cell viability, ATP content, total ROS activity, mitochondrial membrane potential and apoptosis potential were determined. The results showed that, in tested concentrations, EGCG enhanced the negative effect of Cd. Further analyses are needed to determine the exact mechanism of action of EGCG due to the small number of publications on the subject and the differences in the results obtained in the research.
Collapse
Affiliation(s)
- Ewa Wnuk
- Department of Biomedicine and Environmental Research, Institute of Biological Sciences, Faculty Medicine, The John Paul II Catholic University of Lublin, Konstantynów Ave. 1J, 20-708, Lublin, Poland.
| | - Iwona Zwolak
- Department of Biomedicine and Environmental Research, Institute of Biological Sciences, Faculty Medicine, The John Paul II Catholic University of Lublin, Konstantynów Ave. 1J, 20-708, Lublin, Poland
| | - Elzbieta Kochanowicz
- Department of Molecular Biology, Institute of Biological Sciences, Faculty of Medicine, The John Paul II Catholic University of Lublin, Konstantynów Ave. 1I, 20-708, Lublin, Poland
| |
Collapse
|
4
|
Ali T, Li D, Ponnamperumage TNF, Peterson AK, Pandey J, Fatima K, Brzezinski J, Jakusz JAR, Gao H, Koelsch GE, Murugan DS, Peng X. Generation of Hydrogen Peroxide in Cancer Cells: Advancing Therapeutic Approaches for Cancer Treatment. Cancers (Basel) 2024; 16:2171. [PMID: 38927877 PMCID: PMC11201821 DOI: 10.3390/cancers16122171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2024] [Revised: 06/01/2024] [Accepted: 06/04/2024] [Indexed: 06/28/2024] Open
Abstract
Cancer cells show altered antioxidant defense systems, dysregulated redox signaling, and increased generation of reactive oxygen species (ROS). Targeting cancer cells through ROS-mediated mechanisms has emerged as a significant therapeutic strategy due to its implications in cancer progression, survival, and resistance. Extensive research has focused on selective generation of H2O2 in cancer cells for selective cancer cell killing by employing various strategies such as metal-based prodrugs, photodynamic therapy, enzyme-based systems, nano-particle mediated approaches, chemical modulators, and combination therapies. Many of these H2O2-amplifying approaches have demonstrated promising anticancer effects and selectivity in preclinical investigations. They selectively induce cytotoxicity in cancer cells while sparing normal cells, sensitize resistant cells, and modulate the tumor microenvironment. However, challenges remain in achieving selectivity, addressing tumor heterogeneity, ensuring efficient delivery, and managing safety and toxicity. To address those issues, H2O2-generating agents have been combined with other treatments leading to optimized combination therapies. This review focuses on various chemical agents/approaches that kill cancer cells via H2O2-mediated mechanisms. Different categories of compounds that selectively generate H2O2 in cancer cells are summarized, their underlying mechanisms and function are elucidated, preclinical and clinical studies as well as recent advancements are discussed, and their prospects as targeted therapeutic agents and their therapeutic utility in combination with other treatments are explored. By understanding the potential of these compounds, researchers can pave the way for the development of effective and personalized cancer treatments.
Collapse
Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | - Xiaohua Peng
- Department of Chemistry and Biochemistry and the Milwaukee Institute for Drug Discovery, University of Wisconsin-Milwaukee, 3210 N. Cramer Street, Milwaukee, WI 53211, USA; (T.A.); (D.L.); (T.N.F.P.); (A.K.P.); (J.P.); (K.F.); (J.B.); (J.A.R.J.); (H.G.); (G.E.K.); (D.S.M.)
| |
Collapse
|
5
|
Zhu K, Zeng H, Yue L, Huang J, Ouyang J, Liu Z. The Protective Effects of L-Theanine against Epigallocatechin Gallate-Induced Acute Liver Injury in Mice. Foods 2024; 13:1121. [PMID: 38611425 PMCID: PMC11011850 DOI: 10.3390/foods13071121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Revised: 04/04/2024] [Accepted: 04/05/2024] [Indexed: 04/14/2024] Open
Abstract
Epigallocatechin-3-gallate (EGCG) is a main bioactive constituent in green tea. Being a redox-active polyphenol, high-dose EGCG exhibits pro-oxidative activity and could cause liver injury. L-theanine is a unique non-protein amino acid in green tea and could provide liver-protective effects. The purpose of this study was to investigate the hepatoprotective effects of L-theanine on EGCG-induced liver injury and the underlying mechanisms. A total of 300 mg/kg L-theanine was administrated to ICR mice for 7 days. Then, the acute liver injury model was established through intragastric administration of 1000 mg/kg EGCG. Pretreatment with L-theanine significantly alleviated the oxidative stress and inflammatory response caused by high-dose EGCG through modulation of Nrf2 signaling and glutathione homeostasis. Furthermore, metabolomic results revealed that L-theanine protects mice from EGCG-induced liver injury mainly through the regulation of amino acid metabolism, especially tryptophan metabolism. These findings could provide valuable insights into the potential therapeutic applications of L-theanine and highlight the importance of the interactions between dietary components.
Collapse
Affiliation(s)
- Kun Zhu
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, China;
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha 410128, China; (H.Z.); (L.Y.); (J.H.)
| | - Hongzhe Zeng
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha 410128, China; (H.Z.); (L.Y.); (J.H.)
| | - Lin Yue
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha 410128, China; (H.Z.); (L.Y.); (J.H.)
| | - Jianan Huang
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha 410128, China; (H.Z.); (L.Y.); (J.H.)
| | - Jie Ouyang
- Hunan Agricultural Product Processing Institute, Hunan Academy of Agricultural Sciences, Changsha 410125, China
| | - Zhonghua Liu
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha 410128, China; (H.Z.); (L.Y.); (J.H.)
| |
Collapse
|
6
|
Siampani M, Lazanas AC, Spyrou K, Prodromidis MI. Eco-friendly spark-generated Co xO y nanoparticle-modified graphite screen-printed sensing surfaces for the determination of H 2O 2 in energy drinks. Mikrochim Acta 2024; 191:150. [PMID: 38386132 PMCID: PMC10884044 DOI: 10.1007/s00604-024-06233-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Accepted: 02/15/2024] [Indexed: 02/23/2024]
Abstract
The modification of graphite screen-printed electrodes (SPEs) is reported using an eco-friendly and extremely fast method based on the direct cobalt pin electrode-to-SPE spark discharge at ambient conditions. This approach does not utilize any liquids or chemical templates, does not produce any waste, and allows the in-situ generation of CoxOy nanoparticles onto the electrode surface and the development of efficient electrocatalytic sensing surfaces for the determination of H2O2. Co-spark SPEs were characterized using scanning electron microscopy, energy-dispersive X-ray spectroscopy and x-ray photoelectron spectroscopy (XPS), revealing the formation of surface confined CoxOy nanoparticles and the diverse oxidation states of cobalt species. Co-spark SPEs were also characterized with cyclic voltammetry and electrochemical impedance spectroscopy. Redox transitions of the surface confined electrocatalysts are demonstrated by electrochemical polarization studies, showing the formation of different oxides (CoxOy), varying the XPS results. Amperometric measurements at 0.3 V vs. Ag/AgCl revealed a linear relationship between the current response and the concentration of H2O2 over the range 1 - 102 μM, achieving a limit of detection (3σ/m) of 0.6 μM. The interference effect of various electroactive species was effectively addressed by employing dual measurements in the absence and presence of the enzyme catalase. The analytical utility of the method was evaluated in antioxidant rich real-world samples, such as energy drinks, demonstrating sufficient recovery.
Collapse
Affiliation(s)
- Maria Siampani
- Department of Chemistry, University of Ioannina, 451 10, Ioannina, Greece
| | | | - Konstantinos Spyrou
- Department of Materials Science & Engineering, University of Ioannina, 451 10, Ioannina, Greece
| | | |
Collapse
|
7
|
Gerdemann A, Broenhorst M, Behrens M, Humpf HU, Esselen M. Polyphenols Cause Structure Dependent Effects on the Metabolic Profile of Human Hepatocarcinogenic Cells. Mol Nutr Food Res 2023; 67:e2300052. [PMID: 37672806 DOI: 10.1002/mnfr.202300052] [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: 01/30/2023] [Revised: 07/03/2023] [Indexed: 09/08/2023]
Abstract
SCOPE Although many beneficial health effects are attributed to polyphenols their influence on the human metabolome has not been elucidated yet. The ubiquitous occurrence of polyphenols in the human diet demands comprehensive knowledge about physiological and toxicological effects of these compounds on human cells. METHODS AND RESULTS The human hepatocarcinogenic cell line HepG2 is used to elucidate the effects of 13 polyphenols and three respective phenolic degradation products on the human metabolome using HPLC-MS/MS. To investigate structure-activity-relationships, structurally related examples of polyphenols from different compound classes are selected. The analysis of catechins points toward a relation between the degree of hydroxylation and the extent of metabolic effects particularly on the urea cycle and the pentose phosphate pathway (PPP). A correlation between the modulation of the PPP and the stability of the compounds is demonstrated, which may be caused by reactive oxygen species (ROS). The incubation of flavones and alkenylbenzenes demonstrates reduced activity of methoxylated compounds and no impact of the B-ring position. CONCLUSION In general, polyphenols induce a multitude of metabolic effects, for example, on energy metabolism, PPP, and urea cycle. These metabolic alterations may be related to the widely reported bioactivity of these compounds such as the anticarcinogenic effects.
Collapse
Affiliation(s)
- Andrea Gerdemann
- Institute of Food Chemistry, University of Münster, Corrensstraße 45, 48149, Münster, Germany
| | - Melissa Broenhorst
- Institute of Food Chemistry, University of Münster, Corrensstraße 45, 48149, Münster, Germany
| | - Matthias Behrens
- Institute of Food Chemistry, University of Münster, Corrensstraße 45, 48149, Münster, Germany
| | - Hans-Ulrich Humpf
- Institute of Food Chemistry, University of Münster, Corrensstraße 45, 48149, Münster, Germany
| | - Melanie Esselen
- Institute of Food Chemistry, University of Münster, Corrensstraße 45, 48149, Münster, Germany
| |
Collapse
|
8
|
Zheng N, Lin X, Huang P, Liu Y, Bartlam M, Wang Y. Tea polyphenols inhibit blooms caused by eukaryotic and prokaryotic algae. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 265:115531. [PMID: 37778238 DOI: 10.1016/j.ecoenv.2023.115531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2023] [Revised: 08/31/2023] [Accepted: 09/25/2023] [Indexed: 10/03/2023]
Abstract
With changes in global climate, blooms are becoming more frequent and difficult to control. Therefore, the selection of algal suppressor agents with effective inhibition and environmental safety is of paramount importance. One of the main treatment strategies is to inhibit the release of harmful algal toxins. Tea polyphenols (TP) are natural products that have been widely used in medicine, the environment, and other fields due to their antibacterial and antioxidant properties. To investigate their potential application in the treatment of algal blooms, TP were applied to three different microalgae. TP exhibited strong inhibitory effects towards all three microalgae. They stimulate the accumulation of ROS in algal cells, leading to lipid peroxidation and subsequent damage to the cell membrane, resulting in the rupture and necrosis of Cyclotella sp. and Chlorella vulgaris cells. Remarkably, it was observed that lower concentrations of TP exhibited the ability to induce apoptosis in M. aeruginosa cells without causing any structural damage. This outcome is particularly significant as it reduces the potential risk of microcystin release resulting from cell rupture. Overall, blooms dominated by different algae can be treated by adjusting the concentration of TP, a new algal suppressor, indicating strong potential treatment applications.
Collapse
Affiliation(s)
- Ningning Zheng
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education), Nankai International Advanced Research Institute (Shenzhen Futian), Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Xiaowen Lin
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education), Nankai International Advanced Research Institute (Shenzhen Futian), Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Pan Huang
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education), Nankai International Advanced Research Institute (Shenzhen Futian), Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Yu Liu
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education), Nankai International Advanced Research Institute (Shenzhen Futian), Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Mark Bartlam
- State Key Laboratory of Medicinal Chemical Biology, Nankai International Advanced Research Institute (Shenzhen Futian), College of Life Sciences, Nankai University, Tianjin 300350, China.
| | - Yingying Wang
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education), Nankai International Advanced Research Institute (Shenzhen Futian), Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China.
| |
Collapse
|
9
|
de Beer D, Human C, van der Rijst M, Joubert E. Reaction kinetics of aspalathin degradation and flavanone isomer formation in aqueous model solutions: Effect of temperature, pH and metal chelators. Food Res Int 2023; 172:113188. [PMID: 37689940 DOI: 10.1016/j.foodres.2023.113188] [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: 04/18/2023] [Revised: 06/19/2023] [Accepted: 06/27/2023] [Indexed: 09/11/2023]
Abstract
The poor stability of aspalathin in aqueous solutions is a major challenge in delivering a shelf-stable ready-to-drink (RTD) green rooibos iced tea. The kinetics of aspalathin degradation and the formation of eriodictyol glucoside isomers [(S/R)-6-β-D-glucopyranosyleriodictyol and (S/R)-8-β-D-glucopyranosyleriodictyol] in aqueous buffers were modeled to understand and predict aspalathin losses during heat processing. The effects of temperature and pH on the rate constants of aspalathin degradation and eriodictyol glucoside isomer formation were determined in a 0.1 M phosphate buffer with 5.7 mM citric acid. The zero-order model best described the reaction kinetics of aspalathin degradation and eriodictyol glucoside isomer formation. Increasing the temperature and pH increased the reaction rate constants. The activation energies of the reactions were much lower at pH 6 than at pH 4, indicating that pH affected the temperature dependence of the reactions. The 8-C-glucosyl eriodictyol derivatives (RE8G and SE8G) formed at much lower rates than the 6-C-glucosyl eriodictyol derivatives (RE6G and SE6G). The metal chelators, citric acid, citrate and EDTA, drastically reduced the reaction rate constants, indicating the catalytic role of metal ions in aspalathin autoxidation. The results of the study could assist manufacturers to improve the shelf life of rooibos RTD beverages by changing the formulation and adjusting heat processing conditions.
Collapse
Affiliation(s)
- Dalene de Beer
- Plant Bioactives Group, Post-Harvest and Agro-Processing Technologies, Agricultural Research Council (ARC), Infruitec-Nietvoorbij, Private Bag X5026, Stellenbosch 7599, South Africa; Department of Food Science, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa.
| | - Chantelle Human
- Plant Bioactives Group, Post-Harvest and Agro-Processing Technologies, Agricultural Research Council (ARC), Infruitec-Nietvoorbij, Private Bag X5026, Stellenbosch 7599, South Africa
| | - Marieta van der Rijst
- Biometry Unit, Agricultural Research Council (ARC), Infruitec-Nietvoorbij, Private Bag X5026, Stellenbosch 7599, South Africa
| | - Elizabeth Joubert
- Plant Bioactives Group, Post-Harvest and Agro-Processing Technologies, Agricultural Research Council (ARC), Infruitec-Nietvoorbij, Private Bag X5026, Stellenbosch 7599, South Africa; Department of Food Science, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa
| |
Collapse
|
10
|
Guyot C, Malaret T, Touani Kameni F, Cerruti M, Lerouge S. How to Design Catechol-Containing Hydrogels for Cell Encapsulation Despite Catechol Toxicity. ACS APPLIED BIO MATERIALS 2023. [PMID: 37339251 DOI: 10.1021/acsabm.3c00306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/22/2023]
Abstract
Catechol (cat) is a highly adhesive diphenol that can be chemically grafted to polymers such as chitosan (CH) to make them adhesive as well. However, catechol-containing materials experimentally show a large variability of toxicity, especially in vitro. While it is unclear how this toxicity emerges, most concerns are directed toward the oxidation of catechol into quinone that releases reactive oxygen species (ROS) which can, in turn, cause cell apoptosis through oxidative stress. To better understand the mechanisms at play, we examined the leaching profiles, hydrogen peroxide (H2O2) production, and in vitro cytotoxicity of several cat-chitosan (cat-CH) hydrogels that were prepared with different oxidation levels and cross-linking methods. To create cat-CH with different propensities toward oxidation, we grafted either hydrocaffeic acid (HCA, more prone to oxidation) or dihydrobenzoic acid (DHBA, less prone to oxidation) to the backbone of CH. Hydrogels were cross-linked either covalently, using sodium periodate (NaIO4) to trigger oxidative cross-linking, or physically, using sodium bicarbonate (SHC). While using NaIO4 as a cross-linker increased the oxidation levels of the hydrogels, it also significantly reduced in vitro cytotoxicity, H2O2 production, and catechol and quinone leaching in the media. For all gels tested, cytotoxicity could be directly related to the release of quinones rather than H2O2 production or catechol release, showing that oxidative stress may not be the main reason for catechol cytotoxicity, as other pathways of quinone toxicity come into play. Results also suggest that the indirect cytotoxicity of cat-CH hydrogels fabricated through carbodiimide chemistry can be reduced if (i) catechol groups are chemically bound to the polymer backbone to prevent leaching or (ii) the chosen cat-bearing molecule has a high resistance to oxidation. Coupled with the use of other cross-linking chemistries or more efficient purification methods, these strategies can be adopted to synthesize various types of cytocompatible cat-containing scaffolds.
Collapse
Affiliation(s)
- Capucine Guyot
- Department of Mechanical Engineering, Ecole de Technologie Superieure, Montreal H3C 1K3, Canada
- Laboratory of Endovascular Biomaterials, Centre de Recherche du CHUM, Montreal H2X 0A9, Canada
| | - Tommy Malaret
- Department of Mechanical Engineering, Ecole de Technologie Superieure, Montreal H3C 1K3, Canada
- Laboratory of Endovascular Biomaterials, Centre de Recherche du CHUM, Montreal H2X 0A9, Canada
| | - Francesco Touani Kameni
- Laboratory of Endovascular Biomaterials, Centre de Recherche du CHUM, Montreal H2X 0A9, Canada
| | - Marta Cerruti
- Biointerface Lab, Department of Materials Engineering, McGill University, Montreal H3A 2B2, Canada
| | - Sophie Lerouge
- Department of Mechanical Engineering, Ecole de Technologie Superieure, Montreal H3C 1K3, Canada
- Laboratory of Endovascular Biomaterials, Centre de Recherche du CHUM, Montreal H2X 0A9, Canada
| |
Collapse
|
11
|
Tama A, Bartosz G, Sadowska-Bartosz I. Phenolic compounds interfere in the Ampliflu Red/peroxidase assay for hydrogen peroxide. Food Chem 2023; 422:136222. [PMID: 37121205 DOI: 10.1016/j.foodchem.2023.136222] [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: 12/29/2022] [Revised: 04/06/2023] [Accepted: 04/19/2023] [Indexed: 05/02/2023]
Abstract
Methods employing horseradish peroxidase (HRP) are popular for quantification of hydrogen peroxide. This communication reports interference of the Ampliflu Red-HRP assay by phenolic compounds, abundant in food and beverages of plant origin. Concentrations of catechin, propyl gallate, quercetin and gallic acid lowering the yield of the product, resorufin, in this system by 50% were lower than 10 μM. The extent of inhibition increased with decreasing hydrogen peroxide concentration. These results point to the necessity of a careful interpretation of results concerning the quantification of hydrogen peroxide in materials containing phenolic compounds with methods employing HRP, especially when low concentrations of hydrogen peroxide are concerned.
Collapse
Affiliation(s)
- Anna Tama
- Laboratory of Analytical Biochemistry, Institute of Food Technology and Nutrition, College of Natural Sciences, University of Rzeszow, 4 Zelwerowicza Street, 35-601 Rzeszow, Poland
| | - Grzegorz Bartosz
- Department of Bioenergetics, Food Analysis and Microbiology, Institute of Food Technology and Nutrition, College of Natural Sciences, University of Rzeszow, 4 Zelwerowicza Street, 35-601 Rzeszow, Poland.
| | - Izabela Sadowska-Bartosz
- Laboratory of Analytical Biochemistry, Institute of Food Technology and Nutrition, College of Natural Sciences, University of Rzeszow, 4 Zelwerowicza Street, 35-601 Rzeszow, Poland.
| |
Collapse
|
12
|
Uushona T, Chikwanha OC, Katiyatiya CLF, Strydom PE, Mapiye C. Fatty acid and oxidative shelf-life profiles of meat from lambs fed finisher diets containing Acacia mearnsii leaf-meal. Meat Sci 2023; 201:109190. [PMID: 37060878 DOI: 10.1016/j.meatsci.2023.109190] [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: 11/21/2022] [Revised: 03/30/2023] [Accepted: 04/06/2023] [Indexed: 04/17/2023]
Abstract
Five diets containing Acacia mearnsii leaf-meal (AMLM; 0, 50, 100, 150 and 200 g/kg DM) substituted for Triticum aestivum bran were fed to lambs for 42 days. The effect of diet and retail display period on meat fatty acid (FA) composition (day 1); colour, antioxidant activity, myoglobin and lipid oxidation (day 1, 3, 5, 7 and 9); protein oxidation (1, 3 and 7 d) and instrumental tenderness (day 1, 5 and 10) were evaluated. Dietary AMLM linearly decreased (P ≤ 0.05) individual (14:0, 16:0, 18:0) and total saturated FA and increased (P ≤ 0.05) trans(t)-monounsaturated FA (MUFA) mainly t10/t11-18:1, individual and total conjugated linoleic acids, n-3 and n-6 polyunsaturated FA (PUFA) contents. The contents of cis(c)-MUFA, mainly c9-18:1, exhibited a quadratic response reaching a minimum at 50 g/kg AMLM (P ≤ 0.05). Meat antioxidant on day 9 was higher (P ≤ 0.05) for diets containing ≥100 g/kg DM AMLM compared to the other diet × retail display period interactions. Relative to the other interactions, meat redness values were lowest on day 7 and 9 for AMLM diets containing ≥150 g/kg DM (P ≤ 0.05). Dietary addition of AMLM increased (P ≤ 0.05) meat lightness and oxymyoglobin, and reduced (P ≤ 0.05) TBARS and instrumental tenderness values. However, oxymyoglobin values declined (P ≤ 0.05) over the retail display period, while lightness, metmyoglobin, TBARS and carbonyls increased (P ≤ 0.05). Results indicate that AMLM up to 200 g/kg DM in lamb finisher diets, improves meat fatty acid composition, tenderness, and lipid shelf-life.
Collapse
Affiliation(s)
- Tulimo Uushona
- Department of Animal Sciences, Faculty of AgriSciences, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa; Department of Animal Production, Agribusiness and Economics, Faculty of Agriculture, Engineering and Natural Sciences, University of Namibia, Private Bag 13188, Windhoek, Namibia
| | - Obert C Chikwanha
- Department of Animal Sciences, Faculty of AgriSciences, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa
| | - Chenaimoyo L F Katiyatiya
- Department of Animal Sciences, Faculty of AgriSciences, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa
| | - Phillip E Strydom
- Department of Animal Sciences, Faculty of AgriSciences, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa
| | - Cletos Mapiye
- Department of Animal Sciences, Faculty of AgriSciences, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa.
| |
Collapse
|
13
|
Brudzynski K. Unexpected Value of Honey Color for Prediction of a Non-Enzymatic H 2O 2 Production and Honey Antibacterial Activity: A Perspective. Metabolites 2023; 13:metabo13040526. [PMID: 37110183 PMCID: PMC10141347 DOI: 10.3390/metabo13040526] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 03/28/2023] [Accepted: 03/30/2023] [Indexed: 04/29/2023] Open
Abstract
Hydrogen peroxide is the principal antibacterial compound of honey and its concentration determines honey bacteriostatic (MIC) and bactericidal (MBC) potencies. Levels of H2O2 produced are highly relevant to honey therapeutic potential, but they vary extensively among honey with reasons not immediately apparent. According to a traditional view, H2O2 is produced as a by-product of glucose oxidation by the honey bee enzyme, glucose oxidase; however, significant levels of H2O2 could be produced in a non-enzymatic way via polyphenol autooxidation. The aim of this study was to evaluate the potential for such an alternative pathway by re-examining evidence from many experimental and correlative studies in order to identify factors and compounds required for pro-oxidant activity. Unexpectedly, the color intensity was found to be the main indicator separating honey varieties based on the quantitative differences in the polyphenolic content, antioxidant activity and the content of transition metals, Fe, Cu and Mn, the main factors required for pro-oxidant effects. The color-impeding polyphenolics and their oxidation products (semiquinones and quinones) further contributed to color development through multiple chemical conjugations with proteins, phenolic oxidative polymerization, chelation or the reduction of metal ions. Moreover, quinones, as an intrinsic part of polyphenol redox activity, play an active role in the formation of higher-order structures, melanoidins and colloids in honey. The latter structures are also known to chelate metal ions, potentially contributing to H2O2 production. Thus, the color intensity appears as a major parameter that integrates polyphenol-dependent pro-oxidant reactions resulting in H2O2 generation.
Collapse
Affiliation(s)
- Katrina Brudzynski
- Department of Drug Discovery, Bee-Biomedicals Inc., St. Catharines, ON L2T 3T4, Canada
- Department of Biological Sciences, Formerly, Brock University, St. Catharines, ON L2S 3A1, Canada
| |
Collapse
|
14
|
Olson KR, Derry PJ, Kent TA, Straub KD. The Effects of Antioxidant Nutraceuticals on Cellular Sulfur Metabolism and Signaling. Antioxid Redox Signal 2023; 38:68-94. [PMID: 35819295 PMCID: PMC9885552 DOI: 10.1089/ars.2022.0077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Accepted: 06/23/2022] [Indexed: 02/03/2023]
Abstract
Significance: Nutraceuticals are ingested for health benefits, in addition to their general nutritional value. These dietary supplements have become increasingly popular since the late 20th century and they are a rapidly expanding global industry approaching a half-trillion U.S. dollars annually. Many nutraceuticals are promulgated as potent antioxidants. Recent Advances: Experimental support for the efficacy of nutraceuticals has lagged behind anecdotal exuberance. However, accumulating epidemiological evidence and recent, well-controlled clinical trials are beginning to support earlier animal and in vitro studies. Although still somewhat limited, encouraging results have been suggested in essentially all organ systems and against a wide range of pathophysiological conditions. Critical Issues: Health benefits of "antioxidant" nutraceuticals are largely attributed to their ability to scavenge oxidants. This has been criticized based on several factors, including limited bioavailability, short tissue retention time, and the preponderance of endogenous antioxidants. Recent attention has turned to nutraceutical activation of downstream antioxidant systems, especially the Keap1/Nrf2 (Kelch like ECH associated protein 1/nuclear factor erythroid 2-related factor 2) axis. The question now becomes, how do nutraceuticals activate this axis? Future Directions: Reactive sulfur species (RSS), including hydrogen sulfide (H2S) and its metabolites, are potent activators of the Keap1/Nrf2 axis and avid scavengers of reactive oxygen species. Evidence is beginning to accumulate that a variety of nutraceuticals increase cellular RSS by directly providing RSS in the diet, or through a number of catalytic mechanisms that increase endogenous RSS production. We propose that nutraceutical-specific targeting of RSS metabolism will lead to the design and development of even more efficacious antioxidant therapeutic strategies. Antioxid. Redox Signal. 38, 68-94.
Collapse
Affiliation(s)
- Kenneth R. Olson
- Department of Physiology, Indiana University School of Medicine—South Bend, South Bend, Indiana, USA
- Department of Biological Sciences, University of Notre Dame, Notre Dame, Indiana, USA
| | - Paul J. Derry
- Center for Genomics and Precision Medicine, Institute of Biosciences and Technology, Texas A&M Health Science Center, Houston, Texas, USA
| | - Thomas A. Kent
- Center for Genomics and Precision Medicine, Institute of Biosciences and Technology, Texas A&M Health Science Center, Houston, Texas, USA
- Department of Chemistry, Rice University, Houston, Texas, USA
- Stanley H. Appel Department of Neurology, Houston Methodist Hospital and Research Institute, Houston, Texas, USA
| | - Karl D. Straub
- Central Arkansas Veteran's Healthcare System, Little Rock, Arkansas, USA
- Department of Medicine and Biochemistry, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
| |
Collapse
|
15
|
Li B, Yang Y, Ding Y, Ge Y, Xu Y, Xie Y, Shi Y, Le G. Dityrosine in food: A review of its occurrence, health effects, detection methods, and mitigation strategies. Compr Rev Food Sci Food Saf 2023; 22:355-379. [PMID: 36382862 DOI: 10.1111/1541-4337.13071] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 10/07/2022] [Accepted: 10/15/2022] [Indexed: 11/17/2022]
Abstract
Protein and amino acid oxidation in food products produce many new compounds, of which the reactive and toxic compound dityrosine, derived from oxidized tyrosine, is the most widely studied. The high reactivity of dityrosine enables this compound to induce oxidative stress and disrupt thyroid hormone function, contributing to the pathological processes of several diseases, such as obesity, diabetes, cognitive dysfunction, aging, and age-related diseases. From the perspective of food safety and human health, protein-oxidation products in food are the main concern of consumers, health management departments, and the food industry. This review highlights the latest research on the formation pathways, toxicity, detection methods, occurrence in food, and mitigation strategies for dityrosine. Furthermore, the control of dityrosine in family cooking and food-processing industry has been discussed. Food-derived dityrosine primarily originates from high-protein foods, such as meat and dairy products. Considering its toxicity, combining rapid high sensitivity dityrosine detection techniques with feasible control methods could be an effective strategy to ensure food safety and maintain human health. However, the current dityrosine detection and mitigation strategies exhibit some inherent characteristics and limitations. Therefore, developing technologies for rapid and effective dityrosine detection and control at the industrial level is necessary.
Collapse
Affiliation(s)
- Bowen Li
- National Engineering Laboratory/Key Laboratory of Henan Province, College of Food Science and Engineering, Henan University of Technology, Zhengzhou, Henan Province, 450001, China.,State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu Province, 214122, China
| | - Yuhui Yang
- National Engineering Laboratory/Key Laboratory of Henan Province, College of Food Science and Engineering, Henan University of Technology, Zhengzhou, Henan Province, 450001, China
| | - Yinyi Ding
- College of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, Zhejiang Province, 310018, China
| | - Yueting Ge
- College of Life Science, Xinyang Normal University, Xinyang, Henan Province, 464000, China
| | - Yuncong Xu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, 100083, China
| | - Yanli Xie
- National Engineering Laboratory/Key Laboratory of Henan Province, College of Food Science and Engineering, Henan University of Technology, Zhengzhou, Henan Province, 450001, China
| | - Yonghui Shi
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu Province, 214122, China
| | - Guowei Le
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu Province, 214122, China
| |
Collapse
|
16
|
Abstract
Lytic polysaccharide monooxygenases (LPMOs) are unique redox enzymes capable of disrupting the crystalline surfaces of industry-relevant recalcitrant polysaccharides, such as chitin and cellulose. Historically, LPMOs were thought to be slow enzymes relying on O2 as the co-substrate, but it is now clear that these enzymes prefer H2O2, allowing for fast depolymerization of polysaccharides through a peroxygenase reaction. Thus, quantifying H2O2 in LPMO reaction set-ups is of a great interest. The horseradish peroxidase (HRP)/Amplex Red (AR) assay is one of the most popular and accessible tools for measuring hydrogen peroxide. This assay has been used in various types of biological and biochemical studies, including LPMO research, but suffers from pitfalls that need to be accounted for. In this Chapter, we discuss this method and its use for assessing the often rate-limiting in situ formation of H2O2 in LPMO reactions. We show that, after accounting for multiple potential side reactions, quantitative data on H2O2 production obtained with the HRP/Amplex Red assay provide useful clues for understanding the catalytic activity of LPMOs, including the impact of reductants and transition metal ions.
Collapse
Affiliation(s)
- Anton A Stepnov
- Faculty of Chemistry, Biotechnology and Food Science, NMBU-Norwegian University of Life Sciences, Ås, Norway
| | - Vincent G H Eijsink
- Faculty of Chemistry, Biotechnology and Food Science, NMBU-Norwegian University of Life Sciences, Ås, Norway.
| |
Collapse
|
17
|
Mu K, Kitts DD. Application of a HyPer-3 sensor to monitor intracellular H 2O 2 generation induced by phenolic acids in differentiated Caco-2 cells. Anal Biochem 2022; 659:114934. [PMID: 36206845 DOI: 10.1016/j.ab.2022.114934] [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: 08/23/2022] [Revised: 09/22/2022] [Accepted: 09/24/2022] [Indexed: 12/14/2022]
Abstract
Intestinal epithelial cells (IECs) are an important point of contact between dietary food components consumed and subsequent whole-body utilization for body maintenance and growth. Selective bioactive phenolic acids, widely present in fruits, vegetables and beverages can generate hydrogen peroxide (H2O2) and contribute to the cellular redox balance, hence influencing well-known cellular antioxidant and pro-oxidant mechanisms. Our findings have showed that increasing extracellular H2O2 resulted in associated changes in intracellular H2O2 levels in Caco-2 cells (p < 0.05) which was facilitated by activity of a family of water channel membrane proteins, termed aquaporins (AQPs). To demonstrate this, a HyPer-3 genetically encoded fluorescent H2O2 sensitive indicator was used to enable fluorescent real-time imaging of intracellular H2O2 levels as a measure of changes occurring in extracellular H2O2 in differentiated Caco-2 cells exposed to different phenolic acids. The use of confocal microscopy and flow cytometry, respectively, captured visualization and quantification of H2O2 uptake in differentiated Caco-2 cells. DFP00173, an aquaporin 3 (AQP3) inhibitor was effective at inhibiting the intracellular uptake of H2O2 and was sensitive to varied levels of H2O2 generated when different phenolic acids were added to the culture media. In summary, HyPer-3 was shown to be an effective technique to demonstrate relative capabilities of structurally different dietary phenolic acids that have potential to alter intestinal redox balance by changing intracellular H2O2, and either antioxidant or pro-oxidant activity, respectively.
Collapse
Affiliation(s)
- Kaiwen Mu
- Food Science, Food Nutrition and Health Program, Faculty of Land and Food Systems, The University of British Columbia, 2205 East Mall, Vancouver, B.C, V6T 1Z4, Canada.
| | - David D Kitts
- Food Science, Food Nutrition and Health Program, Faculty of Land and Food Systems, The University of British Columbia, 2205 East Mall, Vancouver, B.C, V6T 1Z4, Canada.
| |
Collapse
|
18
|
Vargas-Maya NI, Olmedo-Monfil V, Ramírez-Prado JH, Reyes-Cortés R, Padilla-Vaca F, Franco B. Catalases in the pathogenesis of Sporothrix schenckii research. PeerJ 2022; 10:e14478. [PMID: 36523453 PMCID: PMC9745942 DOI: 10.7717/peerj.14478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Accepted: 11/07/2022] [Indexed: 12/12/2022] Open
Abstract
Pathogenic fungal infection success depends on the ability to escape the immune response. Most strategies for fungal infection control are focused on the inhibition of virulence factors and increasing the effectiveness of antifungal drugs. Nevertheless, little attention has been focused on their physiological resistance to the host immune system. Hints may be found in pathogenic fungi that also inhabit the soil. In nature, the saprophyte lifestyle of fungi is also associated with predators that can induce oxidative stress upon cell damage. The natural sources of nutrients for fungi are linked to cellulose degradation, which in turn generates reactive oxygen species (ROS). Overall, the antioxidant arsenal needed to thrive both in free-living and pathogenic lifestyles in fungi is fundamental for success. In this review, we present recent findings regarding catalases and oxidative stress in fungi and how these can be in close relationship with pathogenesis. Additionally, special focus is placed on catalases of Sporothrix schenckii as a pathogenic model with a dual lifestyle. It is assumed that catalase expression is activated upon exposure to H2O2, but there are reports where this is not always the case. Additionally, it may be relevant to consider the role of catalases in S. schenckii survival in the saprophytic lifestyle and why their study can assess their involvement in the survival and therefore, in the virulence phenotype of different species of Sporothrix and when each of the three catalases are required. Also, studying antioxidant mechanisms in other isolates of pathogenic and free-living fungi may be linked to the virulence phenotype and be potential therapeutic and diagnostic targets. Thus, the rationale for this review to place focus on fungal catalases and their role in pathogenesis in addition to counteracting the effect of immune system reactive oxygen species. Fungi that thrive in soil and have mammal hosts could shed light on the importance of these enzymes in the two types of lifestyles. We look forward to encouraging more research in a myriad of areas on catalase biology with a focus on basic and applied objectives and placing these enzymes as virulence determinants.
Collapse
Affiliation(s)
| | | | | | - Ruth Reyes-Cortés
- Biology Department, Universidad de Guanajuato, Guanajuato, Guanajuato, México
| | - Felipe Padilla-Vaca
- Biology Department, Universidad de Guanajuato, Guanajuato, Guanajuato, México
| | - Bernardo Franco
- Biology Department, Universidad de Guanajuato, Guanajuato, Guanajuato, México
| |
Collapse
|
19
|
Sawant S, Baldwin TC, Khan H, Rahman A. Evaluation of the Effect of Leaf Development in Plectranthus amboinicus L. on Antimicrobial Activity and Virulence Factors of Pseudomonas aeruginosa PAO1 and Staphylococcus aureus NCTC8325. Curr Microbiol 2022; 80:24. [PMID: 36462098 DOI: 10.1007/s00284-022-03126-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Accepted: 11/18/2022] [Indexed: 12/05/2022]
Abstract
Plectranthus amboinicus is widely recognized as a potential source of antimicrobial compounds due to the presence of bioactive components (essential oils) secreted by the glandular trichomes borne on the leaves. As such, an understanding of the effect of leaf development on the production of these essential oils (EOs) is of crucial importance to its medicinal applications. The current study represents the first comparative investigation of the effect of different stages of leaf development (lag, log, and stationary phase) upon the yield and bioactivity of phytochemicals produced. The effects of leaf extracts on the antimicrobial activity, cell surface hydrophobicity, biofilm formation, and motility of P. aeruginosa and Staphylococcus aureus were evaluated. Cryo-scanning electron microscopy was used to record the abundance and distribution of both glandular and non-glandular trichomes during leaf development. Gas chromatography-mass spectrometry analysis revealed that the potent phytochemical thymol is present primarily in log (30.28%) and stationary phase (20.89%) extracts. Log phase extracts showed the lowest minimum inhibitory concentration (25 mg/ml) when compared to other phases of development. Stationary phase extracts were shown to exhibit the highest biofilm dispersal activity against P. aeruginosa (80%), and log phase extracts against biofilms of S. aureus (59%). Log phase extracts showed the highest biofilm inhibitory activity against P. aeruginosa (66%) and S. aureus (63%). In conclusion, log phase leaf extracts of P. amboinicus exhibited a multimodal mechanism of action by displaying antimicrobial, antibiofilm activities and reducing the motility and hydrophobicity, which are important virulence factors in P. aeruginosa and S. aureus pathogenesis.
Collapse
Affiliation(s)
- Sheeba Sawant
- Faculty of Science and Engineering, University of Wolverhampton, Wulfruna St, Wolverhampton, WV1 1LY, UK
| | - Timothy C Baldwin
- Faculty of Science and Engineering, University of Wolverhampton, Wulfruna St, Wolverhampton, WV1 1LY, UK
| | - Habib Khan
- Faculty of Science and Engineering, University of Wolverhampton, Wulfruna St, Wolverhampton, WV1 1LY, UK
| | - Ayesha Rahman
- Faculty of Science and Engineering, University of Wolverhampton, Wulfruna St, Wolverhampton, WV1 1LY, UK.
| |
Collapse
|
20
|
de Freitas KS, da Silva LHD, Squarisi IS, de Souza Oliveira LT, Ribeiro AB, Alves BS, Esperandim TR, de Melo MRS, Ozelin SD, Lemes DC, Bastos JK, Veneziani RCS, Tavares DC. Red propolis exhibits chemopreventive effect associated with antiproliferative and anti-inflammatory activities. Toxicol Res (Camb) 2022; 11:750-757. [PMID: 36337250 PMCID: PMC9618114 DOI: 10.1093/toxres/tfac049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 06/28/2022] [Accepted: 07/01/2022] [Indexed: 08/25/2023] Open
Abstract
INTRODUCTION Red propolis is synthetized from exudates of Dalbergia ecastophyllum (L) Taub. and Symphonia globulifera L.f., presents isoflavones, guttiferone E, xanthochymol, and oblongifolin B and has anti-inflammatory, antioxidant, and antiproliferative activities. OBJECTIVES This study aimed to evaluate the antigenotoxic and anticarcinogenic potential of red propolis hydroalcoholic extract (RPHE) in rodents. METHODS The influence of RPHE in doxorubicin (DXR)-induced genotoxicity was investigated through the micronucleus test in Swiss mice. Blood samples were also collected to investigate oxidative stress, hepatotoxicity, and nephrotoxicity. Was investigated the influence of RPHE in 1,2-dimethylhydrazine (DMH)-induced aberrant crypt foci, as well as its influence in proliferating cell nuclear antigen (PCNA) and the cyclooxygenase-2 (COX-2) expression in colon of rats, by immunohistochemistry. RESULTS The results showed that RPHE (48 mg/kg) reduced DXR-induced genotoxicity. Animals treated with DXR showed significantly lower GSH serum levels in comparison to the negative control. RPHE treatments did not attenuated significantly the DXR-induced GSH depletion. No difference was observed in cytotoxicity parameters of mice hematopoietic tissues between the treatment groups, as well as the biochemical parameters of hepatotoxicity and nephrotoxicity. RPHE (12 mg/kg) reduced the DMH-induced carcinogenicity and toxicity, as well as DMH-induced PCNA and COX-2 expression in colon tissue. CONCLUSION Therefore, was observed that the RPHE has chemopreventive effect, associated to antiproliferative and anti-inflammatory activities.
Collapse
Affiliation(s)
- Karoline Soares de Freitas
- Mutagenesis Laboratory, University of Franca, 201 Dr Armando Salles de Oliveira Ave, Parque Universitário, Franca, São Paulo 14404-600, Brazil
| | - Lucas Henrique Domingos da Silva
- Mutagenesis Laboratory, University of Franca, 201 Dr Armando Salles de Oliveira Ave, Parque Universitário, Franca, São Paulo 14404-600, Brazil
| | - Iara Silva Squarisi
- Mutagenesis Laboratory, University of Franca, 201 Dr Armando Salles de Oliveira Ave, Parque Universitário, Franca, São Paulo 14404-600, Brazil
| | - Lucas Teixeira de Souza Oliveira
- Mutagenesis Laboratory, University of Franca, 201 Dr Armando Salles de Oliveira Ave, Parque Universitário, Franca, São Paulo 14404-600, Brazil
| | - Arthur Barcelos Ribeiro
- Mutagenesis Laboratory, University of Franca, 201 Dr Armando Salles de Oliveira Ave, Parque Universitário, Franca, São Paulo 14404-600, Brazil
| | - Bianca Silva Alves
- Mutagenesis Laboratory, University of Franca, 201 Dr Armando Salles de Oliveira Ave, Parque Universitário, Franca, São Paulo 14404-600, Brazil
| | - Tábata Rodrigues Esperandim
- Mutagenesis Laboratory, University of Franca, 201 Dr Armando Salles de Oliveira Ave, Parque Universitário, Franca, São Paulo 14404-600, Brazil
| | - Matheus Reis Santos de Melo
- Mutagenesis Laboratory, University of Franca, 201 Dr Armando Salles de Oliveira Ave, Parque Universitário, Franca, São Paulo 14404-600, Brazil
| | - Saulo Duarte Ozelin
- Mutagenesis Laboratory, University of Franca, 201 Dr Armando Salles de Oliveira Ave, Parque Universitário, Franca, São Paulo 14404-600, Brazil
| | - Danieli Cristina Lemes
- Mutagenesis Laboratory, University of Franca, 201 Dr Armando Salles de Oliveira Ave, Parque Universitário, Franca, São Paulo 14404-600, Brazil
| | - Jairo Kenupp Bastos
- School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Avenida do Café Ave, Vila Monte Alegre, Ribeirão Preto, São Paulo 14040-900, Brazil
| | - Rodrigo Cassio Sola Veneziani
- Mutagenesis Laboratory, University of Franca, 201 Dr Armando Salles de Oliveira Ave, Parque Universitário, Franca, São Paulo 14404-600, Brazil
| | - Denise Crispim Tavares
- Mutagenesis Laboratory, University of Franca, 201 Dr Armando Salles de Oliveira Ave, Parque Universitário, Franca, São Paulo 14404-600, Brazil
| |
Collapse
|
21
|
Guneidy RA, Zaki ER, Gad AAM, Saleh NSED, Shokeer A. Evaluation of Phenolic Content Diversity along with Antioxidant/Pro-Oxidant, Glutathione Transferase Inhibition, and Cytotoxic Potential of Selected Commonly Used Plants. Prev Nutr Food Sci 2022; 27:282-298. [PMID: 36313063 PMCID: PMC9585404 DOI: 10.3746/pnf.2022.27.3.282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
The function of antioxidant polyphenols has been demonstrated for their ability to protect against a variety of diseases. However, some antioxidants have been shown to be pro-oxidant. Some of the important antioxidant enzymes are glutathione transferases (GST), which are involved in maintaining redox homeostasis. GST class Pi (GSTP1-1) hyper-activation is a feature that is found in cancer. This work aims to demonstrate the relationship between the phytochemicals of 18 plants and their ability to act as antioxidant/pro-oxidant agents, as well as their effects on the activity of GSTP1-1 and their cellular toxicity. Tamarindus indica, Cinnamomum verum, and Alpinia galanga extracts had high phytochemical contents, moderate heavy metal levels, and antioxidant/pro-oxidant activities. Among the main plant components identified using high-performance liquid chromatography, only chlorogenic acid, catechin, and quercetin can function as antioxidants and pro-oxidants. Hibiscus sabdariffa, C. verum, A. galanga, T. indica, Gossypium arboreum, and Punica granatum were among the plant extracts examined that inhibited the activity of the purified recombinant GSTP1-1, with the inhibition constant values ranging from 0.48 to 1.67 mg of gallic acid equivalent/g. The level of cytotoxicity was also studied to determine the effects of these extracts on human Caucasian breast cancer. The findings revealed that plants with high phenol content had an antioxidant/pro-oxidant capacity as well as inhibition of the activity of GST. However, the cytotoxic effect was not associated with all of the extracts, which indicates that polyphenols interact with other components that may influence their observed behavior.
Collapse
Affiliation(s)
- Rasha Awni Guneidy
- Department of Molecular Biology, Biotechnology Research Institute, National Research Center, Cairo 12622, Egypt,
Correspondence to Rasha Awni Guneidy, E-mail:
| | - Eman Ragab Zaki
- Department of Molecular Biology, Biotechnology Research Institute, National Research Center, Cairo 12622, Egypt
| | - Abdul Aziz Mohamed Gad
- Department of Molecular Biology, Biotechnology Research Institute, National Research Center, Cairo 12622, Egypt
| | - Nevein Salah El-Din Saleh
- Department of Molecular Biology, Biotechnology Research Institute, National Research Center, Cairo 12622, Egypt
| | - Abeer Shokeer
- Department of Molecular Biology, Biotechnology Research Institute, National Research Center, Cairo 12622, Egypt
| |
Collapse
|
22
|
Li K, Wang Y, Li X, Huang Y, Niu Q, Meng Q, Yang H, Li Q. In-situ generation of H 2O 2 by zero valent iron to control depolymerization of lignocellulose in composting niche. CHEMOSPHERE 2022; 302:134908. [PMID: 35551932 DOI: 10.1016/j.chemosphere.2022.134908] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2022] [Revised: 04/23/2022] [Accepted: 05/07/2022] [Indexed: 06/15/2023]
Abstract
Lignocellulosic degradation is a bottleneck of bioconversion during the composting process. In-situ generation of H2O2 in the composting system was an ideal method for efficiently promoting lignocellulase degradation, and zero valent iron (ZVI) was concerned because it can generate H2O2 by reducing dissolved oxygen. This study focused on the effects of ZVI treatment on lignocellulose degradation, microbial communities, and carbohydrate-active enzymes (CAZymes) genes during composting. Its results indicated that ZVI increased H2O2 content during composting, accompanied by the formation of •OH. The degradation rates of lignin, cellulose and hemicellulose in ZVI group (20.77%, 30.35% and 44.7%) were significantly higher than in CK group (17.01%, 26.12% and 38.5%). Metagenomic analysis showed that ZVI induced microbial growth that favored lignocellulose degradation, which increased the abundance of Actinobacteria and Firmicutes but reduced Proteobacteria. At the genus level, the abundance of Thermomonospora, Streptomyces, and Bacillus significantly increased. In addition, glycoside hydrolases and auxiliary activities were important CAZymes families of lignocellulose degradation, and their abundance was higher in the ZVI group. Redundancy analysis showed that the increased H2O2 and •OH content was a critical factor in improving lignocellulose degradation. Overall, H2O2 as a co-substrate enhanced the enzymatic efficiency, •OH unspecifically attacked lignocellulose, and the increase in functional microbial abundance was the main reason for promoting lignocellulose degradation in composting.
Collapse
Affiliation(s)
- Kecheng Li
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, China
| | - Yiwu Wang
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, China
| | - Xiaolan Li
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, China
| | - Yite Huang
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, China
| | - Qiuqi Niu
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, China
| | - Qingran Meng
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, China
| | - Hongxiang Yang
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, China
| | - Qunliang Li
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, China.
| |
Collapse
|
23
|
Sato Y, Yamada A, Miyanaga M, Wang DH. Association of Vegetable and Fruit Consumption with Urinary Oxidative Biomarkers in Teenaged Girls: A School-Based Pilot Study in Japan. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:10474. [PMID: 36078190 PMCID: PMC9518434 DOI: 10.3390/ijerph191710474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 08/16/2022] [Accepted: 08/17/2022] [Indexed: 06/15/2023]
Abstract
Hexanoyl-lysine (HEL), 8-hydroxy-2'deoxyguanosine (8-OHdG), and dityrosine (DT) have served as potential biomarkers for detecting oxidative modified lipids, DNA, and proteins in biological samples, respectively. Whether regular higher levels of consumption of vegetables/fruit (V/F) would decrease oxidative modification of these biomolecules in the body remain unelucidated. To examine the association of regular V/F consumption with the generation of these reactive oxygen species-induced biomarkers, this study evaluated V/F consumption in a school-based sample of teenaged girls (mean age 15.6 ± 1.7 years, n = 103), and quantified the formation of oxidative stress biomarkers in their urine. Only 19.4% and 23.3% of participants reported that they consumed the recommended daily amount of vegetables and fruits, respectively. Individuals who consumed lower levels of fruit (<100g/day) or vegetables (<250g/day) had significantly higher HEL excretion in their urine than those who consumed higher levels of fruit (≥100g/day) (p < 0.05) or vegetables (≥250g/day) (p = 0.057). The results of a multiple regression analysis showed that vegetable consumption was an important inhibiting factor of early lipid peroxidation measured as HEL in urine, independent of various confounders (β = - 0.332, p < 0.05). The findings suggest that relatively higher consumption of vegetables would help in the prevention of early lipid peroxidation in adolescents.
Collapse
Affiliation(s)
- Yoshiko Sato
- Department of Bioscience, Faculty of Life Science, Okayama University of Science, Okayama 700-0005, Japan
- Wakayama Shin–ai Junior and Senior High School, Wakayama 640-8151, Japan
| | - Ai Yamada
- Japan Industrial Safety and Health Association, Osaka 550-0001, Japan
| | - Masamitsu Miyanaga
- Department of Bioscience, Faculty of Life Science, Okayama University of Science, Okayama 700-0005, Japan
| | - Da-Hong Wang
- Department of Bioscience, Faculty of Life Science, Okayama University of Science, Okayama 700-0005, Japan
| |
Collapse
|
24
|
Gérard V, Ay E, Launay V, Galopin C, Morlet‐Savary F, Lalevée J. Improvement of color stability using a chelating agent in model soft beverages subjected to Fenton reaction. J CHIN CHEM SOC-TAIP 2022. [DOI: 10.1002/jccs.202200164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Violaine Gérard
- Université de Haute‐Alsace, CNRS, IS2M UMR 7361 Mulhouse France
- Université de Strasbourg Strasbourg France
| | - Emel Ay
- Université de Haute‐Alsace, CNRS, IS2M UMR 7361 Mulhouse France
- Université de Strasbourg Strasbourg France
| | - Valentin Launay
- Université de Haute‐Alsace, CNRS, IS2M UMR 7361 Mulhouse France
- Université de Strasbourg Strasbourg France
| | | | - Fabrice Morlet‐Savary
- Université de Haute‐Alsace, CNRS, IS2M UMR 7361 Mulhouse France
- Université de Strasbourg Strasbourg France
| | - Jacques Lalevée
- Université de Haute‐Alsace, CNRS, IS2M UMR 7361 Mulhouse France
- Université de Strasbourg Strasbourg France
| |
Collapse
|
25
|
Bopitiya D, Hearn MTW, Zhang J, Bennett LE. Demonstration of anti-oxidant properties of mustard seed (Brassica juncea) protein isolate in orange juice. Food Chem 2022; 396:133648. [PMID: 35843007 DOI: 10.1016/j.foodchem.2022.133648] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 06/15/2022] [Accepted: 07/05/2022] [Indexed: 11/04/2022]
Abstract
Previous research has shown that formulated and natural beverages containing mixtures of anti-oxidants can produce stable levels of hydrogen peroxide (H2O2). The aim of this study was to demonstrate the ultimate anti-oxidant effects of proteins for suppressing H2O2, using a protein extract from mustard seed (Brassica juncea). The mustard seed protein isolate (MPI) contained ∼51% protein, and 6.4 mg GAe/g TS of total reducible substances, presumably representing secondary metabolites, including polyphenolics. Dose-dependent suppression of H2O2 (present at 110 µM and 550 µM), in fresh and thermally-processed orange juice was complete in the presence of 0.1 mg/mL MPI after 24 hr, with slightly higher anti-oxidant efficacy than the fruit juice-derived reference protein, thaumatin. The combination of thiol-rich amino acid (methionine and cysteine)-containing proteins and other anti-oxidant species in the MPI were highly effective for inhibiting autoxidation-mediated production of H2O2 in orange juice, and may be useful for other manufactured beverages.
Collapse
Affiliation(s)
- Dilini Bopitiya
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
| | - Milton T W Hearn
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
| | - Jie Zhang
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
| | - Louise E Bennett
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia.
| |
Collapse
|
26
|
Perez-Gonzalez G, Sebestyen D, Petit E, Jellison J, Mugnai L, Gelhaye E, Lee N, Farine S, Bertsch C, Goodell B. Oxygen Radical-Generating Metabolites Secreted by Eutypa and Esca Fungal Consortia: Understanding the Mechanisms Behind Grapevine Wood Deterioration and Pathogenesis. FRONTIERS IN PLANT SCIENCE 2022; 13:921961. [PMID: 35909746 PMCID: PMC9327790 DOI: 10.3389/fpls.2022.921961] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/16/2022] [Accepted: 06/07/2022] [Indexed: 06/15/2023]
Abstract
Eutypa dieback and Esca complex are fungal diseases of grape that cause large economic losses in vineyards. These diseases require, or are enhanced by, fungal consortia growth which leads to the deterioration of the wood tissue in the grapevine trunk; however, pathogenesis and the underlying mechanisms involved in the woody tissue degradation are not understood. We examined the role that the consortia fungal metabolome have in generating oxygen radicals that could potentially play a role in trunk decay and pathogenesis. Unique metabolites were isolated from the consortia fungi with some metabolites preferentially reducing iron whereas others were involved in redox cycling to generate hydrogen peroxide. Metabolite suites with different functions were produced when fungi were grown separately vs. when grown in consortia. Chelator-mediated Fenton (CMF) chemistry promoted by metabolites from these fungi allowed for the generation of highly reactive hydroxyl radicals. We hypothesize that this mechanism may be involved in pathogenicity in grapevine tissue as a causal mechanism associated with trunk wood deterioration/necrosis in these two diseases of grape.
Collapse
Affiliation(s)
| | - Dana Sebestyen
- Department of Microbiology, University of Massachusetts, Amherst, MA, United States
| | - Elsa Petit
- Stockbridge School of Agriculture, University of Massachusetts, Amherst, MA, United States
| | - Jody Jellison
- Center for Agriculture, Food and the Environment, University of Massachusetts, Amherst, MA, United States
| | - Laura Mugnai
- Department of Agricultural, Food, Environmental and Forestry Science and Technology, University of Florence, Firenze, Italy
| | - Eric Gelhaye
- INRAE, IAM, Université de Lorraine, Nancy, France
| | - Norman Lee
- Chemical Instrumentation Center (CIC), Boston University, Boston, MA, United States
| | - Sibylle Farine
- Laboratoire Vigne Biotechnologies et Environnement, Université de Haute-Alsace, Colmar, France
| | - Christophe Bertsch
- Laboratoire Vigne Biotechnologies et Environnement, Université de Haute-Alsace, Colmar, France
| | - Barry Goodell
- Department of Microbiology, University of Massachusetts, Amherst, MA, United States
| |
Collapse
|
27
|
Antimicrobial activity of oregano essential oil and resveratrol emulsions co-encapsulated by sodium caseinate with polysaccharides. Food Control 2022. [DOI: 10.1016/j.foodcont.2022.108925] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
28
|
Jyung S, Kang JW, Kang DH. L. monocytogens exhibited less cell membrane damage, lipid peroxidation, and intracellular reactive oxygen species accumulation after plasma-activated water treatment compared to E. coli O157:H7 and S. Typhimurium. Food Microbiol 2022; 108:104098. [DOI: 10.1016/j.fm.2022.104098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 07/19/2022] [Accepted: 07/19/2022] [Indexed: 11/04/2022]
|
29
|
Shi YG, Lin S, Chen WX, Jiang L, Gu Q, Li DH, Chen YW. Dual-Stage Blue-Light-Guided Membrane and DNA-Targeted Photodynamic Inactivation Using Octyl Gallate for Ultraefficient Eradication of Planktonic Bacteria and Sessile Biofilms. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:7547-7565. [PMID: 35687111 DOI: 10.1021/acs.jafc.2c01667] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
This study aimed to investigate the synergistic bactericidal activity and mechanism of dual-stage light-guided membrane and DNA-targeted photodynamic inactivation (PDI) by the combination of blue light (BL, 420 nm) and the food additive octyl gallate (OG) against Vibrio parahaemolyticus in planktonic and biofilm growth modes. While OG serves as an outstanding exogenous photosensitizer, the planktonic cells were not visibly detectable after the OG-mediated PDI treatment with 0.2 mM OG within 15 min (191.7 J/cm2), and its biofilm was nearly eradicated within 60 min (383.4 J/cm2). Gram-positive Staphylococcus aureus was more susceptible to the PDI than Gram-negative V. parahaemolyticus. The cellular wall and proteins, as well as DNA, were the vulnerable targets for PDI. The membrane integrity could be initially disrupted by OG bearing a hydrophilic head and a hydrophobic tail via transmembrane insertion. The enhancement of OG uptake due to the first-stage light-assisted photochemical internalization (PCI) promoted the accumulation of OG in cells. It further boosted the second-stage light irradiation of the photosensitizer-inducing massive cell death. Upon the second-stage BL irradiation, reactive oxygen species (ROS) generated through the OG-mediated PDI in situ could extensively deconstruct membranes, proteins, and DNA, as well as biofilms, while OG could be activated by BL to carry out photochemical reactions involving the formation of OG-bacterial membrane protein (BMP) covalent conjugates and the interactions with DNA. This dual-stage light-guided subcellular dual-targeted PDI strategy exhibits encouraging effects on the eradication of planktonic bacteria and sessile biofilms, which provides a new insight into the development of an ultraeffective antimicrobial and biofilm removing/reducing technique to improve microbiological safety in the food industry.
Collapse
|
30
|
Kawana H, Miwa T, Honda Y, Furuya T. Sustainable Approach for Peroxygenase-Catalyzed Oxidation Reactions Using Hydrogen Peroxide Generated from Spent Coffee Grounds and Tea Leaf Residues. ACS OMEGA 2022; 7:20259-20266. [PMID: 35721909 PMCID: PMC9201881 DOI: 10.1021/acsomega.2c02186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Accepted: 05/24/2022] [Indexed: 05/05/2023]
Abstract
Peroxygenases are promising catalysts for use in the oxidation of chemicals as they catalyze the direct oxidation of a variety of compounds under ambient conditions using hydrogen peroxide (H2O2) as an oxidant. Although the use of peroxygenases provides a simple method for oxidation of chemicals, the anthraquinone process currently used to produce H2O2 requires significant energy input and generates considerable waste, which negatively affects process sustainability and production costs. Thus, generating H2O2 for peroxygenases on site using an environmentally benign method would be advantageous. Here, we utilized spent coffee grounds (SCGs) and tea leaf residues (TLRs) for the production of H2O2. These waste biomass products reacted with molecular oxygen and effectively generated H2O2 in sodium phosphate buffer. The resulting H2O2 was utilized by the bacterial P450 peroxygenase, CYP152A1. Both SCG-derived and TLR-derived H2O2 promoted the CYP152A1-catalyzed oxidation of 4-methoxy-1-naphthol to Russig's blue as a model reaction. In addition, when CYP152A1 was incubated with styrene, the SCG and TLR solutions enabled the synthesis of styrene oxide and phenylacetaldehyde. This new approach using waste biomass provides a simple, cost-effective, and sustainable oxidation method that should be readily applicable to other peroxygenases for the synthesis of a variety of valuable chemicals.
Collapse
Affiliation(s)
- Hideaki Kawana
- Faculty
of Science and Technology, Tokyo University
of Science, 2641 Yamazaki, Noda 278-8510, Chiba, Japan
| | - Toru Miwa
- Faculty
of Science and Technology, Tokyo University
of Science, 2641 Yamazaki, Noda 278-8510, Chiba, Japan
| | - Yuki Honda
- Department
of Chemistry, Biology, and Environmental Science, Faculty of Science, Nara Women’s University, Kitauoyanishi-machi, Nara 630-8506, Japan
| | - Toshiki Furuya
- Faculty
of Science and Technology, Tokyo University
of Science, 2641 Yamazaki, Noda 278-8510, Chiba, Japan
| |
Collapse
|
31
|
Singh S, Sahadevan R, Roy R, Biswas M, Ghosh P, Kar P, Sonawane A, Sadhukhan S. Structure-based design and synthesis of a novel long-chain 4''-alkyl ether derivative of EGCG as potent EGFR inhibitor: in vitro and in silico studies. RSC Adv 2022; 12:17821-17836. [PMID: 35765335 PMCID: PMC9201511 DOI: 10.1039/d2ra01919a] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Accepted: 06/07/2022] [Indexed: 11/27/2022] Open
Abstract
Herein, we report the discovery of a novel long-chain ether derivative of (−)-epigallocatechin-3-gallate (EGCG), a major green tea polyphenol as a potent EGFR inhibitor. A series of 4′′-alkyl EGCG derivatives have been synthesized via regio-selectively alkylating the 4′′ hydroxyl group in the D-ring of EGCG and tested for their antiproliferative activities against high (A431), moderate (HeLa), and low (MCF-7) EGFR-expressing cancer cell lines. The most potent compound, 4′′-C14 EGCG showed the lowest IC50 values across all the tested cell lines. 4′′-C14 EGCG was also found to be significantly more stable than EGCG under physiological conditions (PBS at pH 7.4). Further western blot analysis and imaging data revealed that 4′′-C14 EGCG induced cell death in A431 cells with shrunken nuclei, nuclear fragmentation, membrane blebbing, and increased population of apoptotic cells where BAX upregulation and BCLXL downregulation were observed. In addition, autophosphorylation of EGFR and its downstream signalling proteins Akt and ERK were markedly inhibited by 4′′-C14 EGCG. MD simulation and the MM/PBSA analysis disclosed the binding mode of 4′′-C14 EGCG in the ATP-binding site of EGFR kinase domain. Taken together, our findings demonstrate that 4′′-C14 EGCG can act as a promising potent EGFR inhibitor with enhanced stability. Among the synthesized 4′′-alkyl EGCG derivatives, 4′′-C14 EGCG inhibited EGF stimulated phosphorylation of EGFR and its downstream signaling pathways, ERK and Akt. 4′′-C14 EGCG showed significantly improved stability than EGCG and induced apoptosis.![]()
Collapse
Affiliation(s)
- Satyam Singh
- Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore Madhya Pradesh 453 552 India
| | - Revathy Sahadevan
- Department of Chemistry, Indian Institute of Technology Palakkad Kerala 678 623 India
| | - Rajarshi Roy
- Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore Madhya Pradesh 453 552 India
| | - Mainak Biswas
- School of Biotechnology, KIIT Deemed to be University Bhubaneswar Orissa 751 024 India
| | - Priya Ghosh
- Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore Madhya Pradesh 453 552 India
| | - Parimal Kar
- Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore Madhya Pradesh 453 552 India
| | - Avinash Sonawane
- Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore Madhya Pradesh 453 552 India
| | - Sushabhan Sadhukhan
- Department of Chemistry, Indian Institute of Technology Palakkad Kerala 678 623 India .,Physical & Chemical Biology Laboratory, Indian Institute of Technology Palakkad Kerala 678 623 India.,Department of Biological Sciences & Engineering, Indian Institute of Technology Palakkad Kerala 678 623 India
| |
Collapse
|
32
|
Recent Advancements in Enhancing Antimicrobial Activity of Plant-Derived Polyphenols by Biochemical Means. HORTICULTURAE 2022. [DOI: 10.3390/horticulturae8050401] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Plants are a reservoir of phytochemicals, which are known to possess several beneficial health properties. Along with all the secondary metabolites, polyphenols have emerged as potential replacements for synthetic additives due to their lower toxicity and fewer side effects. However, controlling microbial growth using these preservatives requires very high doses of plant-derived compounds, which limits their use to only specific conditions. Their use at high concentrations leads to unavoidable changes in the organoleptic properties of foods. Therefore, the biochemical modification of natural preservatives can be a promising alternative to enhance the antimicrobial efficacy of plant-derived compounds/polyphenols. Amongst these modifications, low concentration of ascorbic acid (AA)–Cu (II), degradation products of ascorbic acid (DPAA), Maillard reaction products (MRPs), laccase–mediator (Lac–Med) and horse radish peroxidase (HRP)–H2O2 systems standout. This review reveals the importance of plant polyphenols, their role as antimicrobial agents, the mechanism of the biochemical methods and the ways these methods may be used in enhancing the antimicrobial potency of the plant polyphenols. Ultimately, this study may act as a base for the development of potent antimicrobial agents that may find their use in food applications.
Collapse
|
33
|
Sahadevan R, Singh S, Binoy A, Sadhukhan S. Chemico-biological aspects of (-)-epigallocatechin- 3-gallate (EGCG) to improve its stability, bioavailability and membrane permeability: Current status and future prospects. Crit Rev Food Sci Nutr 2022; 63:10382-10411. [PMID: 35491671 DOI: 10.1080/10408398.2022.2068500] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Natural products have been a bedrock for drug discovery for decades. (-)-Epigallocatechin-3-gallate (EGCG) is one of the widely studied natural polyphenolic compounds derived from green tea. It is the key component believed to be responsible for the medicinal value of green tea. Significant studies implemented in in vitro, in cellulo, and in vivo models have suggested its anti-oxidant, anti-cancer, anti-diabetic, anti-inflammatory, anti-microbial, neuroprotective activities etc. Despite having such a wide array of therapeutic potential and promising results in preclinical studies, its applicability to humans has encountered with rather limited success largely due to the poor bioavailability, poor membrane permeability, rapid metabolic clearance and lack of stability of EGCG. Therefore, novel techniques are warranted to address those limitations so that EGCG or its modified analogs can be used in the clinical setup. This review comprehensively covers different strategies such as structural modifications, nano-carriers as efficient drug delivery systems, synergistic studies with other bioactivities to improve the chemico-biological aspects (e.g., stability, bioavailability, permeability, etc.) of EGCG for its enhanced pharmacokinetics and pharmacological properties, eventually enhancing its therapeutic potentials. We think this review article will serve as a strong platform with comprehensive literature on the development of novel techniques to improve the bioavailability of EGCG so that it can be translated to the clinical applications.
Collapse
Affiliation(s)
- Revathy Sahadevan
- Department of Chemistry, Indian Institute of Technology Palakkad, Kerala, India
| | - Satyam Singh
- Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Madhya Pradesh, India
| | - Anupama Binoy
- Department of Chemistry, Indian Institute of Technology Palakkad, Kerala, India
| | - Sushabhan Sadhukhan
- Department of Chemistry, Indian Institute of Technology Palakkad, Kerala, India
- Department of Biological Sciences and Engineering, Indian Institute of Technology Palakkad, Kerala, India
| |
Collapse
|
34
|
Luo Y, Zhang J, Ho CT, Li S. Management of Maillard reaction-derived reactive carbonyl species and advanced glycation end products by tea and tea polyphenols. FOOD SCIENCE AND HUMAN WELLNESS 2022. [DOI: 10.1016/j.fshw.2021.12.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
35
|
Effects of Hydrogen Peroxide Produced by Catechins on the Aroma of Tea Beverages. Foods 2022; 11:foods11091273. [PMID: 35563996 PMCID: PMC9102859 DOI: 10.3390/foods11091273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Revised: 04/20/2022] [Accepted: 04/26/2022] [Indexed: 02/01/2023] Open
Abstract
Hydrogen peroxide has a significant effect on the flavor of tea beverages. In this study, the yield of hydrogen peroxide in (-)-epigallocatechin gallate (EGCG) solution was first investigated and found to be significantly enhanced under specific conditions, and the above phenomenon was amplified by the addition of linalool. Then, an aqueous hydrogen peroxide solution was added to a linalool solution and it was found that the concentration of linalool was significantly reduced in the above-reconstituted system. These findings were verified by extending the study system to the whole green tea infusions. The results suggested that the production of hydrogen peroxide in tea beverages may be dominated by catechins, with multiple factors acting synergistically, thereby leading to aroma deterioration and affecting the quality of tea beverages. The above results provided a feasible explanation for the deterioration of flavor quality of green tea beverages with shelf life.
Collapse
|
36
|
Yeh SL, Deval P, Wu JG, Luo SC, Tsai WB. One-step electrochemical deposition of antifouling polymers with pyrogallol for biosensing applications. J Mater Chem B 2022; 10:2504-2511. [PMID: 35018937 DOI: 10.1039/d1tb02536h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Electrochemical techniques are highly sensitive and label-free sensing methods for the detection of various biomarkers, toxins, or pathogens. An ideal sensing element should be electroconductive, nonfouling, and readily available for conjugation of ligands. In this work, we have developed a facile, one-step electrodeposition method based on pyrogallol polymerization for preparation of a nonfouling and biotinylated surface on indium tin oxide (ITO). A copolymer of sulfobetaine methacrylate and aminoethyl methacrylate (pSBAE) was synthesized and deposited on ITO in the presence of pyrogallol via cyclic voltammetry. The deposition took less than 15 minutes to sufficiently inhibit cell adhesion. Using biotinylated pSBAE, the modified surface resisted nonspecific protein adsorption from the fetal bovine serum solution and detected added avidin concentrations. The results show an efficient platform to fabricate an electrochemical biosensor for the detection of biomarkers. We expect that this facile one-step technology could be applied to conjugate various biosensing elements for nonfouling biosensors.
Collapse
Affiliation(s)
- Shang-Lin Yeh
- Department of Chemical Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd., Taipei, 10617, Taiwan.
| | - Piyush Deval
- Department of Chemical Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd., Taipei, 10617, Taiwan.
| | - Jhih-Guang Wu
- Department of Material Science and Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd., Taipei, 10617, Taiwan
| | - Shyh-Chyang Luo
- Department of Material Science and Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd., Taipei, 10617, Taiwan
| | - Wei-Bor Tsai
- Department of Chemical Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd., Taipei, 10617, Taiwan.
| |
Collapse
|
37
|
Wu B, Shao Y, Zhao W, Zheng Y, Wang Y, Sun D. Dual functions of epigallocatechin gallate surface-modified Au nanorods@selenium composites for near-infrared-II light-responsive synergistic antibacterial therapy. J Biomater Appl 2022; 36:1812-1825. [PMID: 35232312 DOI: 10.1177/08853282211048570] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Diseases caused by bacterial infections pose ever-increasing threats to human health, making it important to explore alternative antibacterial strategies. Herein, epigallocatechin gallate (EGCG) surface-modified Au nanorods@selenium composites (ASE NPs) were developed for synergistic NIR-II light-responsive antibacterial therapy. In vitro antibacterial experiments demonstrated the improved antibacterial effect of ASE NPs against Staphylococcus aureus (S. aureus) compared with EGCG alone. In addition, in vivo studies demonstrated that ASE NPs cured skin wound infections and sepsis in mice caused by S. aureus. Au nanorods with excellent photothermal conversion realized synergistic photothermal therapy (PTT) in the NIR-II biowindow with an improved penetration depth at a low power density. More importantly, toxicity analysis showed that the composites had no toxic effects on major organs. Thus, the EGCG surface-modified Au nanorods@selenium composites with an NIR-II light-responsive synergistic activity hold great promise for the effective treatment of drug-resistant bacterial infections.
Collapse
Affiliation(s)
- Bingbing Wu
- School of life sciences, 12486Anhui Agricultural University, Hefei, Anhui, P.R. China
| | - Yuyan Shao
- School of life sciences, 12486Anhui Agricultural University, Hefei, Anhui, P.R. China
| | - Wei Zhao
- School of life sciences, 12486Anhui Agricultural University, Hefei, Anhui, P.R. China
| | - Yunfang Zheng
- School of life sciences, 12486Anhui Agricultural University, Hefei, Anhui, P.R. China
| | - Yunsheng Wang
- School of life sciences, 12486Anhui Agricultural University, Hefei, Anhui, P.R. China
| | - Dongdong Sun
- School of life sciences, 12486Anhui Agricultural University, Hefei, Anhui, P.R. China
| |
Collapse
|
38
|
Tama A, Bartosz G, Sadowska-Bartosz I. Is hydrogen peroxide generated in wine? FOOD BIOSCI 2022. [DOI: 10.1016/j.fbio.2021.101487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
39
|
Shi YG, Zhu CM, Li DH, Shi ZY, Gu Q, Chen YW, Wang JQ, Ettelaie R, Chen JS. New Horizons in Microbiological Food Safety: Ultraefficient Photodynamic Inactivation Based on a Gallic Acid Derivative and UV-A Light and Its Application with Electrospun Cyclodextrin Nanofibers. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:14961-14974. [PMID: 34843236 DOI: 10.1021/acs.jafc.1c04827] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
An excellent bactericidal effect of octyl gallate (OG)-mediated photodynamic inactivation (PDI) against foodborne pathogens (Escherichia coli and Staphylococcus aureus) was evaluated in relation to the mode of action. UV-A irradiation (wavelength, 365 nm; irradiance, 8.254 ± 0.18 mW/cm2) of the bacterial suspension containing 0.15 mM OG could lead to a >5-log reduction of viable cell counts within 30 min for E. coli and only 5 min for S. aureus. Reactive oxygen species (ROS) formation was considered the main reason for the bactericidal effect of OG + UV-A light treatment because toxic ROS induced by OG-mediated PDI could attack the cellular wall, proteins, and DNA of microbes. Moreover, the bactericidal effect, as well as the yields of ROS, depended on OG concentrations, irradiation time, and laser output power. Furthermore, we prepared an edible photodynamic antimicrobial membrane comprising electrospun cyclodextrin nanofibers (NFs) by embedding OG. The resultant OG/HPβCD NFs (273.6 μg/mL) under UV-A irradiation for 30 min (14.58 J/cm) could cause a great reduction (>5-log) of viable bacterial counts of E. coli. The in situ photodynamic antibacterial activity of OG/HPβCD NF-based packaging was evaluated during the Chinese giant salamander storage. Overall, this research highlights the dual functionalities (antibacterial and photodynamic properties) of OG as both an antibacterial agent and photosensitizer and the effectiveness of electrospun NFs containing OG as an active antibacterial packaging material for food preservation upon UV light illumination.
Collapse
Affiliation(s)
- Yu-Gang Shi
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Zhejiang, Hangzhou 310035, China
- Institute of Food Microbiology, Zhejiang Gongshang University, Zhejiang, Hangzhou 310035, China
| | - Chen-Min Zhu
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Zhejiang, Hangzhou 310035, China
- Institute of Food Microbiology, Zhejiang Gongshang University, Zhejiang, Hangzhou 310035, China
| | - Dong-Hui Li
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Zhejiang, Hangzhou 310035, China
- Institute of Food Microbiology, Zhejiang Gongshang University, Zhejiang, Hangzhou 310035, China
| | - Ze-Yu Shi
- College of Biology and Environmental Engineering, Zhejiang Shuren University, Hangzhou 310015, China
| | - Qing Gu
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Zhejiang, Hangzhou 310035, China
- Institute of Food Microbiology, Zhejiang Gongshang University, Zhejiang, Hangzhou 310035, China
| | - Yue-Wen Chen
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Zhejiang, Hangzhou 310035, China
- Institute of Food Microbiology, Zhejiang Gongshang University, Zhejiang, Hangzhou 310035, China
| | - Jie-Qian Wang
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Zhejiang, Hangzhou 310035, China
- Institute of Food Microbiology, Zhejiang Gongshang University, Zhejiang, Hangzhou 310035, China
| | - Rammile Ettelaie
- School of Food Science and Nutrition, University of Leeds, Leeds LS2 9JT, U.K
| | - Jian-She Chen
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Zhejiang, Hangzhou 310035, China
| |
Collapse
|
40
|
Shi YG, Jiang L, Lin S, Jin WG, Gu Q, Chen YW, Zhang K, Ettelaie R. Ultra-efficient antimicrobial photodynamic inactivation system based on blue light and octyl gallate for ablation of planktonic bacteria and biofilms of Pseudomonas fluorescens. Food Chem 2021; 374:131585. [PMID: 34802804 DOI: 10.1016/j.foodchem.2021.131585] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2021] [Revised: 11/06/2021] [Accepted: 11/08/2021] [Indexed: 11/04/2022]
Abstract
Pseudomonas fluorescens is a Gram-negative spoilage bacterium and dense biofilm producer, causing food spoilage and persistent contamination. Here, we report an ultra-efficient photodynamic inactivation (PDI) system based on blue light (BL) and octyl gallate (OG) to eradicate bacteria and biofilms of P. fluorescens. OG-mediated PDI could lead to a > 5-Log reduction of viable cell counts within 15 min for P. fluorescens. The activity is exerted through rapid penetration of OG towards the cells with the generation of a high-level toxic reactive oxygen species triggered by BL irradiation. Moreover, OG plus BL irradiation can efficiently not only prevent the formation of biofilms but also scavenge the existing biofilms. Additionally, it was shown that the combination of OG/poly(lactic acid) electrospun nanofibers and BL have great potential as antimicrobial packagings for maintaining the freshness of the salamander storge. These prove that OG-mediated PDI can provide a superior platform for eradicating bacteria and biofilm.
Collapse
Affiliation(s)
- Yu-Gang Shi
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, Zhejiang 310035, China; Institute of Food Microbiology, Zhejiang Gongshang University, Hangzhou, Zhejiang 310035, China.
| | - Lai Jiang
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, Zhejiang 310035, China; Institute of Food Microbiology, Zhejiang Gongshang University, Hangzhou, Zhejiang 310035, China
| | - Shan Lin
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, Zhejiang 310035, China; Institute of Food Microbiology, Zhejiang Gongshang University, Hangzhou, Zhejiang 310035, China
| | - Wen-Gang Jin
- Bio-resources Key Laboratory of Shaanxi Province, School of Biological Science and Engineering, Shaanxi University of Technology, Hanzhong 723001, China
| | - Qing Gu
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, Zhejiang 310035, China; Institute of Food Microbiology, Zhejiang Gongshang University, Hangzhou, Zhejiang 310035, China
| | - Yue-Wen Chen
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, Zhejiang 310035, China; Institute of Food Microbiology, Zhejiang Gongshang University, Hangzhou, Zhejiang 310035, China
| | - Ke Zhang
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, Zhejiang 310035, China; Institute of Food Microbiology, Zhejiang Gongshang University, Hangzhou, Zhejiang 310035, China
| | - Rammile Ettelaie
- School of Food Science and Nutrition, University of Leeds, Leeds LS2 9JT, UK
| |
Collapse
|
41
|
Xu S, Chang L, Hu Y, Zhao X, Huang S, Chen Z, Ren X, Mei X. Tea polyphenol modified, photothermal responsive and ROS generative black phosphorus quantum dots as nanoplatforms for promoting MRSA infected wounds healing in diabetic rats. J Nanobiotechnology 2021; 19:362. [PMID: 34758829 PMCID: PMC8579683 DOI: 10.1186/s12951-021-01106-w] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Accepted: 10/26/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Healing of MRSA (methicillin-resistant Staphylococcus aureus) infected deep burn wounds (MIDBW) in diabetic patients remains an obstacle but is a cutting-edge research problem in clinical science. Surgical debridement and continuous antibiotic use remain the primary clinical treatment for MIDBW. However, suboptimal pharmacokinetics and high doses of antibiotics often cause serious side effects such as fatal complications of drug-resistant bacterial infections. MRSA, which causes wound infection, is currently a bacterium of concern in diabetic wound healing. In more severe cases, it can even lead to amputation of the patient's limb. The development of bioactive nanomaterials that can promote infected wound healing is significant. RESULTS The present work proposed a strategy of using EGCG (Epigallocatechin gallate) modified black phosphorus quantum dots (BPQDs) as therapeutic nanoplatforms for MIDBW to achieve the synergistic functions of NIR (near-infrared)-response, ROS-generation, sterilization, and promoting wound healing. The electron spin resonance results revealed that EGCG-BPQDs@H had a more vital photocatalytic ability to produce singlet oxygen than BPQDs@H. The inhibition results indicated an effective bactericidal rate of 88.6% against MRSA. Molecular biology analysis demonstrated that EGCG-BPQDs significantly upregulated CD31 nearly fourfold and basic fibroblast growth factor (bFGF) nearly twofold, which were beneficial for promoting the proliferation of vascular endothelial cells and skin epidermal cells. Under NIR irradiation, EGCG-BPQDs hydrogel (EGCG-BPQDs@H) treated MIDBW area could rapidly raise temperature up to 55 °C for sterilization. The MIBDW closure rate of rats after 21 days of treatment was 92.4%, much better than that of 61.1% of the control group. The engineered EGCG-BPQDs@H were found to promote MIDBW healing by triggering the PI3K/AKT and ERK1/2 signaling pathways, which could enhance cell proliferation and differentiation. In addition, intravenous circulation experiment showed good biocompatibility of EGCG-BPQDs@H. No significant damage to major organs was observed in rats. CONCLUSIONS The obtained results demonstrated that EGCG-BPQDs@H achieved the synergistic functions of photocatalytic property, photothermal effects and promoted wound healing, and are promising multifunctional nanoplatforms for MIDBW healing in diabetics.
Collapse
Affiliation(s)
- Shibo Xu
- Jinzhou Medical University, Jinzhou, 121001, Liaoning, China
| | - Linna Chang
- Jinzhou Medical University, Jinzhou, 121001, Liaoning, China
| | - Yanan Hu
- Jinzhou Medical University, Jinzhou, 121001, Liaoning, China
| | - Xingjun Zhao
- Jinzhou Medical University, Jinzhou, 121001, Liaoning, China
| | - Shuocheng Huang
- Jinzhou Medical University, Jinzhou, 121001, Liaoning, China
| | - Zhenhua Chen
- Jinzhou Medical University, Jinzhou, 121001, Liaoning, China.
| | - Xiuli Ren
- Jinzhou Medical University, Jinzhou, 121001, Liaoning, China.
| | - Xifan Mei
- Jinzhou Medical University, Jinzhou, 121001, Liaoning, China.
| |
Collapse
|
42
|
Abalaka SE, Oyelowo FO, Akande MG, Tenuche OZ, Sani NA, Adeyemo BT, Idoko IS, Ogbe AO, Ejeh SA. Effects of Moringa oleifera leaves extract, vitamin C, and taurine co-exposures on calcium and metallothionein levels, oxidative stress, and gill histopathological changes in Clarias gariepinus exposed to sub-lethal cadmium. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:52258-52271. [PMID: 34003442 DOI: 10.1007/s11356-021-14426-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Accepted: 05/10/2021] [Indexed: 06/12/2023]
Abstract
Cadmium aquatic environmental pollution poses great threats to fish and their would-be consumers. The present work investigated the effects of ethyl acetate extract of Moringa oleifera leaves (EAEMOL), vitamin C, and taurine co-exposures on calcium and metallothionein levels, oxidative stress, and gill histopathological changes in Clarias gariepinus exposed to sub-lethal cadmium (CdCl2) for 28 days. Fish were exposed to CdCl2 only (1.048 mg/L) as well as co-exposed with EAEMOL (20 mg/L), vitamin C (5 mg/L), and taurine (5 mg/L) separately. There was significant (p < 0.05) deterioration in fish water quality with increasing exposure period but no significant (p > 0.05) changes occurred between the exposed groups. However, the co-exposure of EAEMOL, vitamin C, and taurine did not significantly (p > 0.05) improve the CdCl2-induced fish water quality deterioration. Sub-lethal exposure to CdCl2 only caused significant (p < 0.05) increase in the serum malondialdehyde (MDA) and liver metallothionein (MT) levels with significant (p < 0.05) decrease in serum catalase activity only. However, EAEMOL, vitamin C, and taurine co-exposures did not significantly (p > 0.05) improve the MDA, superoxide dismutase, catalase, and glutathione activities, as well as MT and calcium (Ca2+) levels, condition factor (CF), hepatosomatic index (HSI), and gill histopathological changes induced by the CdCl2 exposure. Similarly, none of the present exposures, CdCl2 only or its co-exposures with EAEMOL, vitamin C, and taurine significantly (p > 0.05) altered the normal functioning of the gills despite the observed histopathological changes based on the degree of tissue change protocol. Therefore, EAEMOL, vitamin C, and taurine co-exposures, as administered in the present case, did not considerably alter the physicochemical parameters of the experimental fish water. However, outside significantly (p < 0.05) increasing MDA level, EAEMOL, vitamin C, and taurine co-exposures did not significantly (p > 0.05) improve the CdCl2-induced Ca2+, MT, CF, HSI, and gill histopathological alterations by sub-lethal CdCl2 exposure of C. gariepinus.
Collapse
Affiliation(s)
- Samson E Abalaka
- Department of Veterinary Pathology, University of Abuja, Abuja, Nigeria.
| | - Fatima O Oyelowo
- Department of Veterinary Anatomy, University of Abuja, Abuja, Nigeria
| | - Motunrayo G Akande
- Department of Veterinary Pharmacology and Toxicology, University of Abuja, Abuja, Nigeria
| | - Oremeyi Z Tenuche
- Department of Veterinary Pathology, University of Abuja, Abuja, Nigeria
| | - Nuhu A Sani
- Department of Veterinary Pathology, University of Abuja, Abuja, Nigeria
| | - Bolade T Adeyemo
- Department of Animal Production and Health, University of Abuja, Abuja, Nigeria
| | - Idoko S Idoko
- Department of Veterinary Pathology, University of Abuja, Abuja, Nigeria
| | - Adamu O Ogbe
- Department of Veterinary Medicine, University of Abuja, Abuja, Nigeria
| | - Sunday A Ejeh
- Department of Veterinary Physiology and Biochemistry, University of Abuja, Abuja, Nigeria
| |
Collapse
|
43
|
Veličković D, Zhou M, Schilling JS, Zhang J. Using MALDI-FTICR-MS Imaging to Track Low-Molecular-Weight Aromatic Derivatives of Fungal Decayed Wood. J Fungi (Basel) 2021; 7:jof7080609. [PMID: 34436148 PMCID: PMC8397067 DOI: 10.3390/jof7080609] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 07/26/2021] [Accepted: 07/26/2021] [Indexed: 11/25/2022] Open
Abstract
Low-molecular-weight (LMW) aromatics are crucial in meditating fungal processes for plant biomass decomposition. Some LMW compounds are employed as electron donors for oxidative degradation in brown rot (BR), an efficient wood-degrading strategy in fungi that selectively degrades carbohydrates but leaves modified lignins. Previous understandings of LMW aromatics were primarily based on “bulk extraction”, an approach that cannot fully reflect their real-time functions during BR. Here, we applied an optimized molecular imaging method that combines matrix-assisted laser desorption ionization (MALDI) with Fourier-transform ion cyclotron resonance mass spectrometry (FTICR-MS) to directly measure the temporal profiles of BR aromatics as Rhodonia placenta decayed a wood wafer. We found that some phenolics were pre-existing in wood, while some (e.g., catechin-methyl ether and dihydroxy-dimethoxyflavan) were generated immediately after fungal activity. These pinpointed aromatics might be recruited to drive early BR oxidative mechanisms by generating Fenton reagents, Fe2+ and H2O2. As BR progressed, ligninolytic products were accumulated and then modified into various aromatic derivatives, confirming that R. placenta depolymerizes lignin. Together, this work confirms aromatic patterns that have been implicated in BR fungi, and it demonstrates the use of MALDI-FTICR-MS imaging as a new approach to monitor the temporal changes of LMW aromatics during wood degradation.
Collapse
Affiliation(s)
- Dušan Veličković
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, WA 99354, USA; (D.V.); (M.Z.)
| | - Mowei Zhou
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, WA 99354, USA; (D.V.); (M.Z.)
| | - Jonathan S. Schilling
- Department of Plant and Microbial Biology, University of Minnesota, Saint Paul, MN 55108, USA
- Correspondence: (J.S.S.); (J.Z.); Tel.: +1-612-624-1761 (J.Z.); Fax: +1-612-625-6286 (J.Z.)
| | - Jiwei Zhang
- Department of Bioproducts and Biosystems Engineering, University of Minnesota, Saint Paul, MN 55108, USA
- Correspondence: (J.S.S.); (J.Z.); Tel.: +1-612-624-1761 (J.Z.); Fax: +1-612-625-6286 (J.Z.)
| |
Collapse
|
44
|
Maheswari P, Harish S, Ponnusamy S, Muthamizhchelvan C. A novel strategy of nanosized herbal Plectranthus amboinicus, Phyllanthus niruri and Euphorbia hirta treated TiO 2 nanoparticles for antibacterial and anticancer activities. Bioprocess Biosyst Eng 2021; 44:1593-1616. [PMID: 34075470 DOI: 10.1007/s00449-020-02491-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2020] [Accepted: 11/23/2020] [Indexed: 01/25/2023]
Abstract
Titanium dioxide nanoparticles exhibit good anticancer and antibacterial activities. They are known to be environmentally friendly, stable, less toxic, and have excellent biocompatibility nature. Due to these properties, they are well suited for biological applications particularly in biomedical applications such as drug delivery and cancer therapy. In this research article, three medicinal herbs namely, Plectranthus amboinicus (Karpooravalli), Phyllanthus niruri (Keezhanelli), and Euphorbia hirta (Amman Pacharisi), were used to modify the surface of the TiO2 nanoparticles. The synthesized nanoparticles were subjected to various characterization techniques. The samples are then subjected to MTT assay to determine cell viability. KB oral cancer cells are used for the determination of the anticancer nature of the pure and bio modified nanoparticles. It is observed that Plectranthus amboinicus-Phyllanthus niruri modified TiO2 nanoparticles exhibit excellent anticancer activities among other bio modified and pure samples. The samples are then examined for antibacterial activities against three Gram-negative bacterial strains namely, Escherichia coli, Klebsiella pneumoniae, Pseudomonas aeruginosa, and two Gram-positive bacterial strains namely, Staphylococcus aureus and Streptococcus mutans, respectively. Among the modified and pure samples, Plectranthus amboinicus showed good antibacterial activity against Gram-positive and Gram-negative bacteria. In the Flow cytometry analysis, the generation of p53 protein expression from Plectranthus amboinicus-Phyllanthus niruri modified TiO2 nano herbal particles shows the anti-cancerous nature of the sample. Then to determine the toxic nature of the Plectranthus amboinicus-Phyllanthus niruri modified TiO2 nano herbal particles against normal cells, the NPs were subjected to MTT assay against normal L929 cells, and it was found to be safer and less toxic towards the normal cells.
Collapse
Affiliation(s)
- P Maheswari
- Department of Nautical Science, VELS Institute of Science, Technology and Advanced Studies, Thalambur, 603 103, India.,Functional Materials and Energy Devices Laboratory, Department of Physics and Nanotechnology, SRM Institute of Science and Technology, Kattankulathur, 603 203, India
| | - S Harish
- Research Institute of Electronics, Shizuoka University, 3-5-1 Johoku, Naka-Ku, Hamamatsu, Shizuoka, 432-8011, Japan. .,Functional Materials and Energy Devices Laboratory, Department of Physics and Nanotechnology, SRM Institute of Science and Technology, Kattankulathur, 603 203, India.
| | - S Ponnusamy
- Functional Materials and Energy Devices Laboratory, Department of Physics and Nanotechnology, SRM Institute of Science and Technology, Kattankulathur, 603 203, India.
| | - C Muthamizhchelvan
- Functional Materials and Energy Devices Laboratory, Department of Physics and Nanotechnology, SRM Institute of Science and Technology, Kattankulathur, 603 203, India
| |
Collapse
|
45
|
Manavalan T, Stepnov AA, Hegnar OA, Eijsink VGH. Sugar oxidoreductases and LPMOs - two sides of the same polysaccharide degradation story? Carbohydr Res 2021; 505:108350. [PMID: 34049079 DOI: 10.1016/j.carres.2021.108350] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 05/13/2021] [Accepted: 05/14/2021] [Indexed: 12/20/2022]
Abstract
Lytic polysaccharide monooxygenases (LPMOs) catalyze the oxidative cleavage of glycosidic bonds in recalcitrant polysaccharides such as chitin and cellulose and their discovery has revolutionized our understanding of enzymatic biomass conversion. The discovery of LPMOs raises interesting new questions regarding the roles of other oxidoreductases and abiotic redox processes in biomass conversion. LPMOs need reducing power and an oxygen co-substrate and biomass degrading ecosystems contain a multitude of redox enzymes that affect the availability of both. For example, biomass degrading fungi produce multiple sugar oxidoreductases whose biological functions so far have remained somewhat enigmatic. It is now conceivable that these redox enzymes, in particular H2O2-producing sugar oxidases, could play a role in fueling and controlling LPMO reactions. Here, we shortly review contemporary issues in the LPMO field, paying particular attention to the possible roles of sugar oxidoreductases.
Collapse
Affiliation(s)
- Tamilvendan Manavalan
- Faculty of Chemistry, Biotechnology and Food Science, NMBU - Norwegian University of Life Science, N-1432, Ås, Norway
| | - Anton A Stepnov
- Faculty of Chemistry, Biotechnology and Food Science, NMBU - Norwegian University of Life Science, N-1432, Ås, Norway
| | - Olav A Hegnar
- Faculty of Chemistry, Biotechnology and Food Science, NMBU - Norwegian University of Life Science, N-1432, Ås, Norway
| | - Vincent G H Eijsink
- Faculty of Chemistry, Biotechnology and Food Science, NMBU - Norwegian University of Life Science, N-1432, Ås, Norway.
| |
Collapse
|
46
|
Renzetti A, Betts JW, Fukumoto K, Rutherford RN. Antibacterial green tea catechins from a molecular perspective: mechanisms of action and structure-activity relationships. Food Funct 2021; 11:9370-9396. [PMID: 33094767 DOI: 10.1039/d0fo02054k] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
This review summarizes the mechanisms of antibacterial action of green tea catechins, discussing the structure-activity relationship (SAR) studies for each mechanism. The antibacterial activity of green tea catechins results from a variety of mechanisms that can be broadly classified into the following groups: (1) inhibition of virulence factors (toxins and extracellular matrix); (2) cell wall and cell membrane disruption; (3) inhibition of intracellular enzymes; (4) oxidative stress; (5) DNA damage; and (6) iron chelation. These mechanisms operate simultaneously with relative importance differing among bacterial strains. In all SAR studies, the highest antibacterial activity is observed for galloylated compounds (EGCG, ECG, and theaflavin digallate). This observation, combined with numerous experimental and theoretical evidence, suggests that catechins share a common binding mode, characterized by the formation of hydrogen bonds and hydrophobic interactions with their target.
Collapse
Affiliation(s)
- Andrea Renzetti
- Global Education Institute, University of the Ryukyus, Nishihara, Okinawa 903-0213, Japan.
| | | | | | | |
Collapse
|
47
|
Ofoedu CE, You L, Osuji CM, Iwouno JO, Kabuo NO, Ojukwu M, Agunwah IM, Chacha JS, Muobike OP, Agunbiade AO, Sardo G, Bono G, Okpala COR, Korzeniowska M. Hydrogen Peroxide Effects on Natural-Sourced Polysacchrides: Free Radical Formation/Production, Degradation Process, and Reaction Mechanism-A Critical Synopsis. Foods 2021; 10:699. [PMID: 33806060 PMCID: PMC8064442 DOI: 10.3390/foods10040699] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 03/20/2021] [Accepted: 03/22/2021] [Indexed: 12/20/2022] Open
Abstract
Numerous reactive oxygen species (ROS) entities exist, and hydrogen peroxide (H2O2) is very key among them as it is well known to possess a stable but poor reactivity capable of generating free radicals. Considered among reactive atoms, molecules, and compounds with electron-rich sites, free radicals emerging from metabolic reactions during cellular respirations can induce oxidative stress and cause cellular structure damage, resulting in diverse life-threatening diseases when produced in excess. Therefore, an antioxidant is needed to curb the overproduction of free radicals especially in biological systems (in vivo and in vitro). Despite the inherent properties limiting its bioactivities, polysaccharides from natural sources increasingly gain research attention given their position as a functional ingredient. Improving the functionality and bioactivity of polysaccharides have been established through degradation of their molecular integrity. In this critical synopsis; we articulate the effects of H2O2 on the degradation of polysaccharides from natural sources. Specifically, the synopsis focused on free radical formation/production, polysaccharide degradation processes with H2O2, the effects of polysaccharide degradation on the structural characteristics; physicochemical properties; and bioactivities; in addition to the antioxidant capability. The degradation mechanisms involving polysaccharide's antioxidative property; with some examples and their respective sources are briefly summarised.
Collapse
Affiliation(s)
- Chigozie E. Ofoedu
- Department of Food Science and Technology, School of Engineering and Engineering Technology, Federal University of Technology, Owerri, 460114 Imo, Nigeria; (C.M.O.); (J.O.I.); (N.O.K.); (M.O.); (I.M.A.); (O.P.M.)
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China; (L.Y.); (J.S.C.); (A.O.A.)
| | - Lijun You
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China; (L.Y.); (J.S.C.); (A.O.A.)
| | - Chijioke M. Osuji
- Department of Food Science and Technology, School of Engineering and Engineering Technology, Federal University of Technology, Owerri, 460114 Imo, Nigeria; (C.M.O.); (J.O.I.); (N.O.K.); (M.O.); (I.M.A.); (O.P.M.)
| | - Jude O. Iwouno
- Department of Food Science and Technology, School of Engineering and Engineering Technology, Federal University of Technology, Owerri, 460114 Imo, Nigeria; (C.M.O.); (J.O.I.); (N.O.K.); (M.O.); (I.M.A.); (O.P.M.)
| | - Ngozi O. Kabuo
- Department of Food Science and Technology, School of Engineering and Engineering Technology, Federal University of Technology, Owerri, 460114 Imo, Nigeria; (C.M.O.); (J.O.I.); (N.O.K.); (M.O.); (I.M.A.); (O.P.M.)
| | - Moses Ojukwu
- Department of Food Science and Technology, School of Engineering and Engineering Technology, Federal University of Technology, Owerri, 460114 Imo, Nigeria; (C.M.O.); (J.O.I.); (N.O.K.); (M.O.); (I.M.A.); (O.P.M.)
- Food Technology Division, School of Industrial Technology, Universiti Sains Malaysia, Minden 11800, Penang, Malaysia
| | - Ijeoma M. Agunwah
- Department of Food Science and Technology, School of Engineering and Engineering Technology, Federal University of Technology, Owerri, 460114 Imo, Nigeria; (C.M.O.); (J.O.I.); (N.O.K.); (M.O.); (I.M.A.); (O.P.M.)
| | - James S. Chacha
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China; (L.Y.); (J.S.C.); (A.O.A.)
- Department of Food Technology, Nutrition and Consumer Sciences, Sokoine University of Agriculture, 3006 Morogoro, Tanzania
| | - Onyinye P. Muobike
- Department of Food Science and Technology, School of Engineering and Engineering Technology, Federal University of Technology, Owerri, 460114 Imo, Nigeria; (C.M.O.); (J.O.I.); (N.O.K.); (M.O.); (I.M.A.); (O.P.M.)
| | - Adedoyin O. Agunbiade
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China; (L.Y.); (J.S.C.); (A.O.A.)
- Department of Food Technology, University of Ibadan, 200284 Ibadan, Nigeria
| | - Giacomo Sardo
- Institute for Biological Resources and Marine Biotechnologies—IRBIM, National Research Council (CNR), Via Vaccara, 61, 91026 Mazara del Vallo, Italy; (G.S.); (G.B.)
| | - Gioacchino Bono
- Institute for Biological Resources and Marine Biotechnologies—IRBIM, National Research Council (CNR), Via Vaccara, 61, 91026 Mazara del Vallo, Italy; (G.S.); (G.B.)
| | - Charles Odilichukwu R. Okpala
- Department of Functional Food Products Development, Faculty of Biotechnology and Food Science, Wroclaw University of Environmental and Life Sciences, 51-630 Wroclaw, Poland;
| | - Małgorzata Korzeniowska
- Department of Functional Food Products Development, Faculty of Biotechnology and Food Science, Wroclaw University of Environmental and Life Sciences, 51-630 Wroclaw, Poland;
| |
Collapse
|
48
|
Poljsak B, Kovač V, Milisav I. Antioxidants, Food Processing and Health. Antioxidants (Basel) 2021; 10:antiox10030433. [PMID: 33799844 PMCID: PMC8001021 DOI: 10.3390/antiox10030433] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 03/05/2021] [Accepted: 03/08/2021] [Indexed: 11/29/2022] Open
Abstract
The loss and/or modification of natural antioxidants during various food processing techniques and storage methods, like heat/thermal, UV, pulsed electric field treatment, drying, blanching and irradiation is well described. Antioxidants in their reduced form are modified mainly by oxidation, and less by pyrolysis and hydrolysis. Thus, they are chemically converted from the reduced to an oxidized form. Here we describe the neglected role of the oxidized forms of antioxidants produced during food processing and their effect on health. While natural antioxidants in their reduced forms have many well studied health-promoting characteristics, much less is known about the effects of their oxidized forms and other metabolites, which may have some health benefits as well. The oxidized forms of natural antioxidants affect cell signaling, the regulation of transcription factor activities and other determinants of gene expression. Very low doses may trigger hormesis, resulting in specific health benefits by the activation of damage repair processes and antioxidative defense systems. Functional studies determining the antioxidants’ effects on the organisms are important, especially as reduced or oxidized antioxidants and their metabolites may have additional or synergistic effects.
Collapse
Affiliation(s)
- Borut Poljsak
- Laboratory of Oxidative Stress Research, Faculty of Health Sciences, University of Ljubljana, Zdravstvena pot 5, SI-1000 Ljubljana, Slovenia; (B.P.); (V.K.)
| | - Vito Kovač
- Laboratory of Oxidative Stress Research, Faculty of Health Sciences, University of Ljubljana, Zdravstvena pot 5, SI-1000 Ljubljana, Slovenia; (B.P.); (V.K.)
| | - Irina Milisav
- Laboratory of Oxidative Stress Research, Faculty of Health Sciences, University of Ljubljana, Zdravstvena pot 5, SI-1000 Ljubljana, Slovenia; (B.P.); (V.K.)
- Faculty of Medicine, Institute of Pathophysiology, University of Ljubljana, Zaloska 4, SI-1000 Ljubljana, Slovenia
- Correspondence: ; Tel.: +386-1-543-7022; Fax: +386-1-543-7021
| |
Collapse
|
49
|
Oxidation of Hydrogen Sulfide by Quinones: How Polyphenols Initiate Their Cytoprotective Effects. Int J Mol Sci 2021; 22:ijms22020961. [PMID: 33478045 PMCID: PMC7835830 DOI: 10.3390/ijms22020961] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Revised: 01/12/2021] [Accepted: 01/13/2021] [Indexed: 12/15/2022] Open
Abstract
We have shown that autoxidized polyphenolic nutraceuticals oxidize H2S to polysulfides and thiosulfate and this may convey their cytoprotective effects. Polyphenol reactivity is largely attributed to the B ring, which is usually a form of hydroxyquinone (HQ). Here, we examine the effects of HQs on sulfur metabolism using H2S- and polysulfide-specific fluorophores (AzMC and SSP4, respectively) and thiosulfate sensitive silver nanoparticles (AgNP). In buffer, 1,4-dihydroxybenzene (1,4-DB), 1,4-benzoquinone (1,4-BQ), pyrogallol (PG) and gallic acid (GA) oxidized H2S to polysulfides and thiosulfate, whereas 1,2-DB, 1,3-DB, 1,2-dihydroxy,3,4-benzoquinone and shikimic acid did not. In addition, 1,4-DB, 1,4-BQ, PG and GA also increased polysulfide production in HEK293 cells. In buffer, H2S oxidation by 1,4-DB was oxygen-dependent, partially inhibited by tempol and trolox, and absorbance spectra were consistent with redox cycling between HQ autoxidation and H2S-mediated reduction. Neither 1,2-DB, 1,3-DB, 1,4-DB nor 1,4-BQ reduced polysulfides to H2S in either 21% or 0% oxygen. Epinephrine and norepinephrine also oxidized H2S to polysulfides and thiosulfate; dopamine and tyrosine were ineffective. Polyphenones were also examined, but only 2,5-dihydroxy- and 2,3,4-trihydroxybenzophenones oxidized H2S. These results show that H2S is readily oxidized by specific hydroxyquinones and quinones, most likely through the formation of a semiquinone radical intermediate derived from either reaction of oxygen with the reduced quinones, or from direct reaction between H2S and quinones. We propose that polysulfide production by these reactions contributes to the health-promoting benefits of polyphenolic nutraceuticals.
Collapse
|
50
|
S. Alvarez M, Billones J, Lin CH, Heralde F. Plectranthus amboinicus (Spreng.) Semi-purified Fractions with Selective β-Glucuronidase Inhibition Elucidated with gas chromatography-mass spectrometry and in silico docking. Pharmacogn Mag 2021. [DOI: 10.4103/pm.pm_149_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
|