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Lu L, Luan Y, Wang H, Gao Y, Wu S, Zhao X. Flavonoid as a Potent Antioxidant: Quantitative Structure-Activity Relationship Analysis, Mechanism Study, and Molecular Design by Synergizing Molecular Simulation and Machine Learning. J Phys Chem A 2024; 128:6216-6228. [PMID: 39023240 DOI: 10.1021/acs.jpca.4c03241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/20/2024]
Abstract
In this work, a quantitative structure-antioxidant activity relationship of flavonoids was performed using a machine learning (ML) method. To achieve lipid-soluble, highly antioxidant flavonoids, 398 molecular structures with various substitute groups were designed based on the flavonoid skeleton. The hydrogen dissociation energies (ΔG1, ΔG2, and ΔG3) related to multiple hydrogen atom transfer processes and the solubility parameter (δ) of flavonoids were calculated using molecular simulation. The group decomposition results and the calculated antioxidant parameters constituted the ML data set. The artificial neural network and random forest models were constructed to predict and analyze the contribution of the substitute groups and positions to the antioxidant activity. The results showed the hydroxyl group at positions B4', B5', and B6' and the branched alkyl group at position C3 in the flavonoid skeleton were the optimal choice for improving antioxidant activity and compatibility with apolar organic materials. Compared to the pyrogallol group-grafted flavonoid, the designed potent flavonoid decreased ΔG1 and δ by 2.2 and 15.1%, respectively, while ΔG2 and ΔG3 kept the favorable lower values. These findings suggest that an efficient flavonoid prefers multiple ortho-phenolic hydroxyl groups and suitable sites with hydrophobic groups. The combination of molecular simulation and the ML method may offer a new research approach for the molecular design of novel antioxidants.
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Affiliation(s)
- Ling Lu
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, P. R. China
- Research Institute of Petroleum Processing, SINOPEC, Beijing 100083, P. R. China
| | - Yajie Luan
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Huaqi Wang
- College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Yangyang Gao
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Sizhu Wu
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Xiuying Zhao
- College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China
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Zhang D, Lu M, Liu X, Wei X, Lv G, Shi J, Battino M, Chen K, Zou X. Effect of Phenol and Alkylamide Interaction on α-Glucosidase Inhibition and Cellular Antioxidant Activity during In Vitro Digestion: Using Szechuan Pepper ( Zanthoxylum genus) as a Model. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:11531-11548. [PMID: 38700894 DOI: 10.1021/acs.jafc.4c01544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2024]
Abstract
Although recent evidence indicated significant phenol and alkylamide interaction in aqueous solutions, the gastrointestinal digestion influence of the combination remains unclear. This study aims to investigate phenol and alkylamide interaction during in vitro digestion, focusing on bioaccessibility and bioactivity, including α-glucosidase inhibition and cellular antioxidant activity. Additionally, the structural mechanism of phenol and alkylamide interaction during in vitro digestion was explored. The results indicated that the presence of phenols and alkylamides significantly increased or decreased their respective bioaccessibility, depending on the Zanthoxylum varieties. Furthermore, although antagonistic phenol/alkylamide interaction was evident during α-glucosidase inhibition, cellular oxidative stress alleviation, and antioxidant gene transcription upregulation, this effect weakened gradually as digestion progressed. Glycoside bond cleavage and the methylation of phenols as well as alkylamide isomerization and addition were observed during digestion, modifying the hydrogen bonding sites and interaction behavior. This study provided insights into the phenol/alkylamide interaction in the gastrointestinal tract.
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Affiliation(s)
- Di Zhang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Minmin Lu
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Xuhao Liu
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Xiaoou Wei
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Guanhua Lv
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Jiyong Shi
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Maurizio Battino
- International Research Center for Food Nutrition and Safety, Jiangsu University, Zhenjiang 212013, China
- Department of Clinical Sciences, Faculty of Medicine, Polytechnic University of Marche, Ancona 60100, Italy
| | - Kexian Chen
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, Zhejiang 310018, PR China
| | - Xiaobo Zou
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
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Ren L, Yang S, Wu N, Xu J. Preparation and characterization of polyvinyl alcohol/sodium lignosulfonate/black rice anthocyanin extract agricultural film for monitoring soil pH. Int J Biol Macromol 2023; 253:126800. [PMID: 37717865 DOI: 10.1016/j.ijbiomac.2023.126800] [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: 07/03/2023] [Revised: 08/29/2023] [Accepted: 09/06/2023] [Indexed: 09/19/2023]
Abstract
This study focuses on the formulation of polyvinyl alcohol (PVA)-based films with pH-sensitive properties and ultraviolet (UV) resistance by incorporating sodium lignosulfonate (LS) and varying concentrations of black rice anthocyanin extract (BRE) into PVA matrix. The films were characterized through Fourier transform-infrared spectroscopy (FT-IR), X-ray diffraction (XRD), tensile test, water vapor permeability (WVP), and ultraviolet-visible (UV-vis) spectroscopy. The results indicated that BRE and LS effectively formed strong hydrogen bonds with PVA, leading to reduced film crystallinity, improved mechanical properties, and lowered WVP as the BRE content increased. The addition of LS and BRE improved the UV resistance of the films, and BRE imparted films with excellent pH-sensitive properties. Among the film variants, the PVA/LS/BRE film containing 1 wt% BRE exhibited excellent mechanical performance, boasting an elongation at a break of 360.66 % and a strength of 35.68 MPa. Additionally, soil pH visualization holds significant potential within agriculture. In this study, the PVA/LS/BRE film containing 2 wt% BRE exhibited minimum UV transparency (0.9 %) and displayed the most distinct color response across varying pH environments. Therefore, the PVA/LS/BRE film containing 2 wt% BRE excelled in both UV resistance and pH sensitivity, positioning it as the most suitable material for the development of agricultural films integrated with soil pH monitoring capabilities.
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Affiliation(s)
- Lili Ren
- Key Laboratory of Bionic Engineering (Ministry of Education), College of Biological and Agricultural Engineering, College of Bionic Science and Engineering, Jilin University, Changchun 130022, China.
| | - Siqi Yang
- Key Laboratory of Bionic Engineering (Ministry of Education), College of Biological and Agricultural Engineering, College of Bionic Science and Engineering, Jilin University, Changchun 130022, China
| | - Nan Wu
- Key Laboratory of Bionic Engineering (Ministry of Education), College of Biological and Agricultural Engineering, College of Bionic Science and Engineering, Jilin University, Changchun 130022, China
| | - Jian Xu
- Key Laboratory of Bionic Engineering (Ministry of Education), College of Biological and Agricultural Engineering, College of Bionic Science and Engineering, Jilin University, Changchun 130022, China
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Gui H, Dai J, Tian J, Jiang Q, Zhang Y, Ren G, song B, Wang M, Saiwaidoula M, Dong W, Li B. The isolation of anthocyanin monomers from blueberry pomace and their radical-scavenging mechanisms in DFT study. Food Chem 2023; 418:135872. [PMID: 37001355 DOI: 10.1016/j.foodchem.2023.135872] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 03/02/2023] [Accepted: 03/03/2023] [Indexed: 03/08/2023]
Abstract
This study explored the isolation of anthocyanin monomers using a medium- and high-pressure separation technique as a means to increase the added value of a by-product of the blueberry juice industry. Six anthocyanin monomers were isolated with a purity of 95% and identified as mono-galactoside, glucoside, and isomers of delphinidin, malvidin, and even malvidin-3-O-arabinoside, malvidin-3-(6″-acetyl)-O-glucoside by LC-MS and 1H NMR. Following the conformation search, the computer calculation manifested the active sites of six anthocyanins (C4'-OH) and their stabilities based on the structural and energy parameters. The DPPH tests demonstrated that delphinidin glycoside's free radical scavenging ability (89.93 ± 2.03 % and 86.50 ± 3.16 %) was significantly higher than that of malvidin (80.39 ± 1.30 % and 81.02 ± 0.45 %), and that malvidin's capacity was improved by conjugation arabinoside (87.48 ± 2.39 %) and acetylated glucoside (88.39 ± 1.37 %), which was compatible with the computer calculation.
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Xiaowei H, Liuzi D, Zhihua L, Jin X, Jiyong S, Xiaodong Z, Junjun Z, Ning Z, Holmes M, Xiaobo Z. Fabrication and characterization of colorimetric indicator for Salmon freshness monitoring using agar/polyvinyl alcohol gel and anthocyanin from different plant sources. Int J Biol Macromol 2023; 239:124198. [PMID: 36996954 DOI: 10.1016/j.ijbiomac.2023.124198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 03/10/2023] [Accepted: 03/23/2023] [Indexed: 03/30/2023]
Abstract
In order to investigate the sensitivity of anthocyanins from different plant origin as indicators for salmon freshness, nine plant anthocyanins were extracted and fabricated into colorimetric sensor arrays to detect NH3, trimethylamine (TMA), dimethylamine (DMA) to indicate salmon freshness. Rosella anthocyanin had the highest sensitivity for amines, ammonia and salmon. HPLC-MSS analysis indicated that Delphinidin-3 glucoside accounted for 75.48 % of the Rosella anthocyanin. UV-visible spectral analysis showed that the maximum absorbance band of Roselle anthocyanins for acid and alkaline forms were located at 525 nm and 625 nm which showed a relatively broader spectrum than other anthocyanins. An indicator film was fabricated by combining Roselle anthocyanin with agar and polyvinyl alcohol (PVA), which showed visible changes from red to green when employed to monitor the freshness of salmon stored at 4 °C. The ΔE value of Roselle anthocyanin indicator film was changed from 5.94 to >10. The ΔE value also can predict the chemical quality indicators of salmon effectively, especially with characteristic volatile components, and the predictive correlation coefficient was above 0.98. Therefore, the proposed indicating film showed great potential monitoring salmon freshness.
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Ali HM, Soliman AG, Elfiky HGAG. SAR and QSAR of COVID-19 Main Protease–Inhibitor Interactions of Recently X-ray Crystalized Complexes. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES, INDIA SECTION B: BIOLOGICAL SCIENCES 2022; 92:281-291. [PMID: 35194302 PMCID: PMC8831015 DOI: 10.1007/s40011-021-01338-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 10/30/2021] [Accepted: 12/09/2021] [Indexed: 11/30/2022]
Abstract
COVID-19 is still widespread worldwide and up to now there is no established antiviral able to control the disease. Main protease is responsible for the viral replication and transcription; thus, its inhibition is a promising route to control virus proliferation. The present study aims to examine detail interactions between main protease and recently reported ninety-seven inhibitors with available X-ray crystallography to define factors enhance inhibition activity; thirty-two of most potent inhibitors were examined to identify sites and types of interaction. The study showed formation of covalent bond, H-bond and hydrophobic interaction with key residues in the active side. Covalent bond is observed in seventeen complexes, all of them by attack of the 145Cys thiol group on Michael acceptor, aldehyde or its hydrate, α-ketoamide, double bond or acetamide methyl group; the latter type requires H-bonding between acetamide carbonyl oxygen and at least one of 143Gly, 144Ser or 145Cys. Potent inhibitors, disulfiram and ebselen docked in the same binding site. Accordingly, factors identify inhibition include forming covalent bond and existing terminal hydrophobic groups and amidic or peptidomimetic structure. Binding affinity was found correlated with topological diameter up to 24 bond, molecular size, branching, polar surface area up to 199 Å2 and hydrophilicity.
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Affiliation(s)
- Hussein M. Ali
- Agricultural Biochemistry Department, Faculty of Agriculture, Ain Shams University, Shoubra El-Kheima, Cairo, Egypt
| | - Ahmed G. Soliman
- Agricultural Biochemistry Department, Faculty of Agriculture, Ain Shams University, Shoubra El-Kheima, Cairo, Egypt
| | - Hala G. A. G. Elfiky
- Agricultural Biochemistry Department, Faculty of Agriculture, Ain Shams University, Shoubra El-Kheima, Cairo, Egypt
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Campo MG, Corral GM. Structural, dynamic, and hydration properties of quercetin and its aggregates in solution. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2022; 34:294001. [PMID: 35472688 DOI: 10.1088/1361-648x/ac6a99] [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: 01/05/2022] [Accepted: 04/26/2022] [Indexed: 06/14/2023]
Abstract
Quercetin is a flavonoid present in the human diet with multiple health benefits. Quercetin solutions are inhomogeneous even at very low concentrations due to quercetin's tendency to aggregate. We simulate, using molecular dynamics, three systems of quercetin solutions: infinite dilution, 0.22 M, and 0.46 M. The systems at the two highest concentrations represent regions of the quercetin aggregates, in which the concentration of this molecule is unusually high. We study the behavior of this molecule, its aggregates, and the modifications in the surrounding water. In the first three successive layers of quercetin hydration, the density of water and the hydrogen bonds formations between water molecules are smaller than that of bulk. Quercetin has a hydrophilic surface region that preferentially establishes donor hydrogen bonds with water molecules with relative frequencies from 0.12 to 0.46 at infinite dilution. Also, it has two hydrophobic regions above and below the planes of its rings, whose first hydration layers are further out from quercetin (≈0.3 Å) and their water molecules do not establish hydrogen bonds with it. Water density around the hydrophobic regions is smaller than that of the hydrophilic. Quercetin molecules aggregate inπ-stacking configurations, with a distance of ≈0.37 nm between the planes of their rings, and form bonds between their hydroxyl groups. The formation of quercetin aggregates decreases the hydrogen bonds between quercetin and the surrounding water and produces a subdiffusive behavior in water molecules. Quercetin has a subdiffusive behavior even at infinite dilution, which increases with the number of molecules within the aggregates and the time they remain within them.
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Affiliation(s)
- M G Campo
- Facultad de Ciencias Exactas y Naturales, Universidad Nacional de La Pampa, Uruguay 151, (6300) Santa Rosa, Argentina
| | - G M Corral
- Facultad de Ciencias Exactas y Naturales, Universidad Nacional de La Pampa, Uruguay 151, (6300) Santa Rosa, Argentina
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8
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Xie Y, Ma M, Zhang C, Yang Y, Shumin S, Ma W, Li Q. Experimental and theoretical research on the effect of coupling heat and pH on the structure and antioxidant activity of cyanidin-3-O-glucoside from black soybean coat. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2022; 102:1842-1850. [PMID: 34460956 DOI: 10.1002/jsfa.11519] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 07/23/2021] [Accepted: 08/30/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Since anthocyanin has good coloration and antioxidant properties, many studies have focused on exploring the stability and antioxidant activity of anthocyanin. The objective of this work was to study effects of pH and temperature on the bioactivity of cyanidin-3-O-glucoside (C3G) and ultra-performance liquid chromatography-photodiode array-electrospray ionization-quadrupole-time-of-flight mass spectrometry (UPLC-PDA-ESI-Q-TOF-MS) and density functional theory (DFT) were used to explain the mechanism of structural transformation of C3G affecting their bioactivity at the molecular level. RESULTS During the heating process at pH 2.2 to 7.0,the flavylium cation content of C3G decreased from 92.71% to 51.64% and the chalcone content increased from 7.29% to 30.61%. The quinoidal base and first discovery of the degradation product of the C3G, 1-(3,4-dihydroxy-phenyl)-2-(3, 4,5-trihydroxy-6-hydroxymethyl-tetrahydro-pyran-2-yloxy)-ethanone, were only detected in heated samples at pH 7.0. DFT revealed the antioxidant mechanism was mediated by sequential proton loss electron transfer and the antioxidant activity of C3G in pH 5.0 and 7.0 environments was higher than that in the pH 2.2 environment. CONCLUSIONS The results revealed the thermal degradation products of C3G included catechin, 3,4-dihydroxybenzoic acid, 2,4,6-trihydroxy-benzaldehyde and 1-(3,4-Dihydroxy-phenyl)-2-(3,4,5-trihydroxy-6-hydroxymethyl-tetrahydro-pyran-2-yloxy)-ethanone. C3G had higher antioxidant activity in weakly acidic to near-neutral environments and the reactive sites were most likely at the 4'-OH and 5-OH sites. © 2021 Society of Chemical Industry.
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Affiliation(s)
- Yanli Xie
- College of Food Science and Engineering, Henan University of Technology, Zhengzhou, China
- Henan Key Laboratory of Cereal and Oil Food Safety Inspection and Control, Zhengzhou, China
| | - Mengyao Ma
- College of Food Science and Engineering, Henan University of Technology, Zhengzhou, China
- Henan Key Laboratory of Cereal and Oil Food Safety Inspection and Control, Zhengzhou, China
| | - Chunyu Zhang
- College of Food Science and Engineering, Henan University of Technology, Zhengzhou, China
- Henan Key Laboratory of Cereal and Oil Food Safety Inspection and Control, Zhengzhou, China
| | - Yuhui Yang
- College of Food Science and Engineering, Henan University of Technology, Zhengzhou, China
- Henan Key Laboratory of Cereal and Oil Food Safety Inspection and Control, Zhengzhou, China
| | - Sun Shumin
- College of Food Science and Engineering, Henan University of Technology, Zhengzhou, China
- Henan Key Laboratory of Cereal and Oil Food Safety Inspection and Control, Zhengzhou, China
| | - Weibin Ma
- College of Food Science and Engineering, Henan University of Technology, Zhengzhou, China
- Henan Key Laboratory of Cereal and Oil Food Safety Inspection and Control, Zhengzhou, China
| | - Qian Li
- College of Food Science and Engineering, Henan University of Technology, Zhengzhou, China
- Henan Key Laboratory of Cereal and Oil Food Safety Inspection and Control, Zhengzhou, China
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Fizer M, Fizer O, Barbalat D, Shishkina S, Snigur D. Structural peculiarities of new benzopyrylium dyes: X-ray, FT-IR, and DFT complex study. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.132178] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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10
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Rubio-Cortés JE, López J, Velazco-Cabral I, Feliciano A, Vázquez MA, Alcaraz-Contreras Y. In Vitro Study of the Effect of 2,6-Substituents at the New 4-Ethoxy-Phenols as Antioxidants. Polycycl Aromat Compd 2021. [DOI: 10.1080/10406638.2021.2020135] [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]
Affiliation(s)
| | - Julio López
- Departamento de Química, Universidad de Guanajuato, Guanajuato, Gto, México
| | | | - Alberto Feliciano
- Departamento de Química, Universidad de Guanajuato, Guanajuato, Gto, México
| | - Miguel A. Vázquez
- Departamento de Química, Universidad de Guanajuato, Guanajuato, Gto, México
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Bioavailability and antioxidant potentials of fresh and pasteurized kiwi juice before and after in vitro gastrointestinal digestion. Journal of Food Science and Technology 2020; 57:4277-4285. [PMID: 33071349 DOI: 10.1007/s13197-020-04467-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 10/24/2019] [Accepted: 04/23/2020] [Indexed: 01/22/2023]
Abstract
The aim of the present work was to find the changes in the chemical composition, chemical structure and antioxidant activity of bioactive nutrients of kiwi juices upon pasteurization and in vitro gastrointestinal digestion. Results showed that fresh kiwi juice (FKJ) contains total phenols, 162 mg GAE/mL, total flavonoids 1.44 mg QE/mL, ascorbic acid 4.5 mg/mL and fiber 60%; these contents were marginally affected by pasteurization (PKJ) to be 122, 1.02, 2.6 and 47 respectively. On the other hand, gastrointestinal digestion severely lowered total phenols, total flavonoids and ascorbic acid in digested fresh kiwi juice (DFKJ) to 49 mg GAE/mL,0.16 mg GE/mL and 2.2 mg/mL, and in digested pasteurized kiwi juice (DPKJ) to 42, 0.07 and 1.2 respectively; however fiber contents increased upon digestion as a result of decreasing other nutrients. The antioxidant and reducing power activities followed the same order of decreasing total phenols, total flavonoids and ascorbic acid contents i.e. FKJ > PKJ > DFKJ > DPKJ. The major flavonoid found was apigenin in the form of various glycosides differ in the number (1-3) and position of the sugar units. Pasteurization showed minor effects on the chemical composition of fresh juice while digestion, as a result of gastrointestinal enzymes had more effect but mainly on the number and position of the sugar units rather than affecting the flavonoid moiety which preserve the main nutritive values.
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12
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Computational aspects of anthocyanidins and anthocyanins: A review. Food Chem 2019; 297:124898. [DOI: 10.1016/j.foodchem.2019.05.172] [Citation(s) in RCA: 62] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 05/21/2019] [Accepted: 05/23/2019] [Indexed: 01/27/2023]
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13
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Ali HM, Ali IH. Structure-antioxidant activity relationships, QSAR, DFT calculation, and mechanisms of flavones and flavonols. Med Chem Res 2019. [DOI: 10.1007/s00044-019-02452-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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14
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Chen Z, Yin H, Peng H, Lu G, Liu Z, Dang Z. Identification of novel pathways for biotransformation of tetrabromobisphenol A by Phanerochaete chrysosporium, combined with mechanism analysis at proteome level. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 659:1352-1361. [PMID: 31096345 DOI: 10.1016/j.scitotenv.2018.12.446] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Revised: 12/28/2018] [Accepted: 12/29/2018] [Indexed: 06/09/2023]
Abstract
The investigation of tetrabromobisphenol A (TBBPA) removal by Phanerochaete chrysosporium (P. chrysosporium) was conducted. Under optimal conditions (pH 5, inoculum size of 5% (v/v), initial glucose concentration of 5 g/L, TBBPA concentration of 5 mg/L), >97% of initial TBBPA was removed after 3 days. The TBBPA metabolites, tetrabromobisphenol A glycoside, tribromobisphenol A glycoside and monohydroxylated tetrabromobisphenol A, were identified for the first time by fungi transformation as being produced by glycosylation and oxidative hydroxylation, respectively. Proteome analysis showed that P. chrysosporium significantly upregulated cytochrome P450 monooxygenase, glutathione S-transferases, UDP-glucosyltransferase, O‑methyltransferase and other oxidoreductases for TBBPA oxidative hydroxylation, reductive debromination, glycosylation, O‑methylation and oxidative cleavage for detoxification. Data from cytotoxicity tests with human hepatocellular liver carcinoma (HepG2) confirmed that TBBPA toxicity was effectively decreased by P. chrysosporium treatment. Bioaugmentation with P. chrysosporium significantly improved the removal efficiency of TBBPA in water microcosms to 63.1% within 12 h. This study suggests that P. chrysosporium might be suitable for the removal of TBBPA from contaminated water.
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Affiliation(s)
- Zhanghong Chen
- Key Laboratory of Ministry of Education on Pollution Control and Ecosystem Restoration in Industry Clusters, Guangdong Provincial Engineering and Technology Research Center for Environmental Risk Prevention and Emergency Disposal, School of Environment and Energy, South China University of Technology, Guangzhou 510006, Guangdong, PR China
| | - Hua Yin
- Key Laboratory of Ministry of Education on Pollution Control and Ecosystem Restoration in Industry Clusters, Guangdong Provincial Engineering and Technology Research Center for Environmental Risk Prevention and Emergency Disposal, School of Environment and Energy, South China University of Technology, Guangzhou 510006, Guangdong, PR China.
| | - Hui Peng
- Department of Chemistry, Jinan University, Guangzhou 510632, Guangdong, PR China
| | - Guining Lu
- Key Laboratory of Ministry of Education on Pollution Control and Ecosystem Restoration in Industry Clusters, Guangdong Provincial Engineering and Technology Research Center for Environmental Risk Prevention and Emergency Disposal, School of Environment and Energy, South China University of Technology, Guangzhou 510006, Guangdong, PR China
| | - Zehua Liu
- Key Laboratory of Ministry of Education on Pollution Control and Ecosystem Restoration in Industry Clusters, Guangdong Provincial Engineering and Technology Research Center for Environmental Risk Prevention and Emergency Disposal, School of Environment and Energy, South China University of Technology, Guangzhou 510006, Guangdong, PR China
| | - Zhi Dang
- Key Laboratory of Ministry of Education on Pollution Control and Ecosystem Restoration in Industry Clusters, Guangdong Provincial Engineering and Technology Research Center for Environmental Risk Prevention and Emergency Disposal, School of Environment and Energy, South China University of Technology, Guangzhou 510006, Guangdong, PR China
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15
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Hernández-García L, Sandoval-Lira J, Rosete-Luna S, Niño-Medina G, Sanchez M. Theoretical study of ferulic acid dimer derivatives: bond dissociation enthalpy, spin density, and HOMO-LUMO analysis. Struct Chem 2018. [DOI: 10.1007/s11224-018-1107-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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16
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Energetic and electronic computation of the two-hydrogen atom donation process in catecholic and non-catecholic anthocyanidins. Food Chem 2017; 243:145-150. [PMID: 29146321 DOI: 10.1016/j.foodchem.2017.09.120] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Revised: 09/02/2017] [Accepted: 09/25/2017] [Indexed: 11/23/2022]
Abstract
Antioxidant activity of anthocyanidins is greatly affected by the 3-hydroxyl group and/or a catecholic moiety. The two-hydrogen atom donation process is frequently used to explain the high antioxidant activity of polyphenolic compounds leading to the formation of stable diketones e.g. 1,2-quinones. Thermodynamic parameters, HOMO and spin density were computed to identify the favoured path, either through the 3-hydroxyl group or through the catecholic moiety in a series of catecholic and non-catecholic 3-oxy- (and deoxy)-anthocyanidins. DFT calculations showed that the donation process in non-catecholic anthocyanidins depended on the substituents on ring B. Anthocyanidins with 3',5'-diOMe groups showed donation through 3,4'-OH or, otherwise, through 3,5-OH groups. Catecholic 3-oxyanthocyanidins, on the other hand, showed donation through the 3,4'-OH path rather than the catecholic path (4',3'-path). The 3,4'-path was favoured by the formation of planar 3-radicals in the first step and the stabilization of 4'-radicals in the second step by H-bonding with the 3'-OH group.
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