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Liang J, Li H, Han M, Gao Z. Polysaccharide-polyphenol interactions: a comprehensive review from food processing to digestion and metabolism. Crit Rev Food Sci Nutr 2024:1-17. [PMID: 38965668 DOI: 10.1080/10408398.2024.2368055] [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: 07/06/2024]
Abstract
Most studies on the beneficial effects of polyphenols on human health have focused on polyphenols extracted using aqueous organic solvents, ignoring the fact that a portion of polyphenols form complexes with polysaccharides. Polysaccharides and polyphenols are interrelated, and their interactions affect the physicochemical property, quality, and nutritional value of foods. In this review, the distribution of bound polyphenols in major food sources is summarized. The effect of food processing on the interaction between polyphenols and cell wall polysaccharides (CWP) is discussed in detail. We also focus on the digestion, absorption, and metabolic behavior of polysaccharide-polyphenol complexes. Different food processing techniques affect the interaction between CWP and polyphenols by altering their structure, solubility, and strength of interactions. The interaction influences the free concentration and extractability of polyphenols in food and modulates their bioaccessibility in the gastrointestinal tract, leading to their major release in the colon. Metabolism of polyphenols by gut microbes significantly enhances the bioavailability of polyphenols. The metabolic pathway and product formation rate of polyphenols and the fermentation characteristics of polysaccharides are affected by the interaction. Furthermore, the interaction exhibits synergistic or antagonistic effects on the stability, solubility, antioxidant and functional activities of polyphenols. In summary, understanding the interactions between polysaccharides and polyphenols and their changes in food processing is of great significance for a comprehensive understanding of the health benefits of polyphenols and the optimization of food processing technology.
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Affiliation(s)
- Jingjing Liang
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi, China
| | - Hongcai Li
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi, China
| | - Mengzhen Han
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi, China
| | - Zhenpeng Gao
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi, China
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Weldetsadik ET, Li N, Li J, Shang J, Zhu H, Zhang Y. Undescribed Cyclohexene and Benzofuran Alkenyl Derivatives from Choerospondias axillaris, a Potential Hypoglycemic Fruit. Foods 2024; 13:1495. [PMID: 38790795 PMCID: PMC11119685 DOI: 10.3390/foods13101495] [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: 04/04/2024] [Revised: 05/07/2024] [Accepted: 05/07/2024] [Indexed: 05/26/2024] Open
Abstract
The fruit of Choerospondias axillaris (Anacardiaceae), known as south wild jujube in China, has been consumed widely in several regions of the world to produce fruit pastille and leathers, juice, jam, and candy. A comprehensive chemical study on the fresh fruits led to the isolation and identification of 18 compounds, including 7 new (1-7) and 11 known (8-18) comprised of 5 alkenyl (cyclohexenols and cyclohexenones) derivatives (1-5), 3 benzofuran derivatives (6-8), 6 flavonoids (9-14) and 4 lignans (15-18). Their structures were elucidated by extensive spectroscopic analysis. The known lignans 15-18 were isolated from the genus Choerospondias for the first time. Most of the isolates exhibited significant inhibitory activity on α-glucosidase with IC50 values from 2.26 ± 0.06 to 43.9 ± 0.96 μM. Molecular docking experiments strongly supported the potent α-glucosidase inhibitory activity. The results indicated that C. axillaris fruits could be an excellent source of functional foods that acquire potential hypoglycemic bioactive components.
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Affiliation(s)
- Ermias Tamiru Weldetsadik
- State Key Laboratory of Phytochemistry and Plant Resources of West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China; (E.T.W.); (N.L.); (J.L.); (J.S.); (H.Z.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Na Li
- State Key Laboratory of Phytochemistry and Plant Resources of West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China; (E.T.W.); (N.L.); (J.L.); (J.S.); (H.Z.)
| | - Jingjuan Li
- State Key Laboratory of Phytochemistry and Plant Resources of West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China; (E.T.W.); (N.L.); (J.L.); (J.S.); (H.Z.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jiahuan Shang
- State Key Laboratory of Phytochemistry and Plant Resources of West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China; (E.T.W.); (N.L.); (J.L.); (J.S.); (H.Z.)
| | - Hongtao Zhu
- State Key Laboratory of Phytochemistry and Plant Resources of West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China; (E.T.W.); (N.L.); (J.L.); (J.S.); (H.Z.)
| | - Yingjun Zhang
- State Key Laboratory of Phytochemistry and Plant Resources of West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China; (E.T.W.); (N.L.); (J.L.); (J.S.); (H.Z.)
- Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
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Wang Z, Ma Q, Wu G, Zhong Y, Feng B, Huang P, Li A, Tang G, Huang X, Pu H. Bioactive α-Pyrone Analogs from the Endophytic Fungus Diaporthe sp. CB10100: α-Glucosidase Inhibitory Activity, Molecular Docking, and Molecular Dynamics Studies. Molecules 2024; 29:1768. [PMID: 38675588 PMCID: PMC11052008 DOI: 10.3390/molecules29081768] [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: 03/12/2024] [Revised: 04/05/2024] [Accepted: 04/10/2024] [Indexed: 04/28/2024] Open
Abstract
Two α-pyrone analogs were isolated from the endophytic fungus Diaporthe sp. CB10100, which is derived from the medicinal plant Sinomenium acutum. These analogs included a new compound, diaporpyrone F (3), and a known compound, diaporpyrone D (4). The structure of 3 was identified by a comprehensive examination of HRESIMS, 1D and 2D NMR spectroscopic data. Bioinformatics analysis revealed that biosynthetic gene clusters for α-pyrone analogs are common in fungi of Diaporthe species. The in vitro α-glucosidase inhibitory activity and antibacterial assay of 4 revealed that it has a 46.40% inhibitory effect on α-glucosidase at 800 μM, while no antibacterial activity against methicillin-resistant Staphylococcus aureus (MRSA), Mycolicibacterium (Mycobacterium) smegmatis or Klebsiella pneumoniae at 64 μg/mL. Molecular docking and molecular dynamics simulations of 4 with α-glucosidase further suggested that the compounds are potential α-glucosidase inhibitors. Therefore, α-pyrone analogs can be used as lead compounds for α-glucosidase inhibitors in more in-depth studies.
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Affiliation(s)
- Zhong Wang
- Hunan Provincial Key Laboratory for Synthetic Biology of Traditional Chinese Medicine, School of Pharmaceutical Sciences, Hunan University of Medicine, Huaihua 418000, China; (Z.W.); (Q.M.); (G.W.); (Y.Z.); (P.H.); (A.L.); (G.T.)
| | - Qingxian Ma
- Hunan Provincial Key Laboratory for Synthetic Biology of Traditional Chinese Medicine, School of Pharmaceutical Sciences, Hunan University of Medicine, Huaihua 418000, China; (Z.W.); (Q.M.); (G.W.); (Y.Z.); (P.H.); (A.L.); (G.T.)
| | - Guangling Wu
- Hunan Provincial Key Laboratory for Synthetic Biology of Traditional Chinese Medicine, School of Pharmaceutical Sciences, Hunan University of Medicine, Huaihua 418000, China; (Z.W.); (Q.M.); (G.W.); (Y.Z.); (P.H.); (A.L.); (G.T.)
| | - Yani Zhong
- Hunan Provincial Key Laboratory for Synthetic Biology of Traditional Chinese Medicine, School of Pharmaceutical Sciences, Hunan University of Medicine, Huaihua 418000, China; (Z.W.); (Q.M.); (G.W.); (Y.Z.); (P.H.); (A.L.); (G.T.)
| | - Bin Feng
- Huaihua Hospital of Traditional Chinese Medicine, Huaihua 418000, China;
| | - Pingzhi Huang
- Hunan Provincial Key Laboratory for Synthetic Biology of Traditional Chinese Medicine, School of Pharmaceutical Sciences, Hunan University of Medicine, Huaihua 418000, China; (Z.W.); (Q.M.); (G.W.); (Y.Z.); (P.H.); (A.L.); (G.T.)
| | - Aijie Li
- Hunan Provincial Key Laboratory for Synthetic Biology of Traditional Chinese Medicine, School of Pharmaceutical Sciences, Hunan University of Medicine, Huaihua 418000, China; (Z.W.); (Q.M.); (G.W.); (Y.Z.); (P.H.); (A.L.); (G.T.)
| | - Genyun Tang
- Hunan Provincial Key Laboratory for Synthetic Biology of Traditional Chinese Medicine, School of Pharmaceutical Sciences, Hunan University of Medicine, Huaihua 418000, China; (Z.W.); (Q.M.); (G.W.); (Y.Z.); (P.H.); (A.L.); (G.T.)
| | - Xueshuang Huang
- Hunan Provincial Key Laboratory for Synthetic Biology of Traditional Chinese Medicine, School of Pharmaceutical Sciences, Hunan University of Medicine, Huaihua 418000, China; (Z.W.); (Q.M.); (G.W.); (Y.Z.); (P.H.); (A.L.); (G.T.)
| | - Hong Pu
- Hunan Provincial Key Laboratory for Synthetic Biology of Traditional Chinese Medicine, School of Pharmaceutical Sciences, Hunan University of Medicine, Huaihua 418000, China; (Z.W.); (Q.M.); (G.W.); (Y.Z.); (P.H.); (A.L.); (G.T.)
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Bie S, Zhao S, Cai S, Yi J, Zhou L. The profiles of free, esterified and insoluble-bound phenolics in peach juice after high pressure homogenization and evaluation of their antioxidant capacities, cytoprotective effect, and inhibitory effects on α-glucosidase and dipeptidyl peptidase-Ⅳ. Food Chem X 2024; 21:101092. [PMID: 38223527 PMCID: PMC10784678 DOI: 10.1016/j.fochx.2023.101092] [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: 11/18/2023] [Revised: 12/19/2023] [Accepted: 12/20/2023] [Indexed: 01/16/2024] Open
Abstract
The phenolic profiles, antioxidant capacities, cytoprotective effect, and α-glucosidase and DPP-IV inhibitory capacity of free (FP), esterified (EP) and insoluble-bound (IBP) phenolic fractions in 'Lijiang snow' peach juice after high pressure homogenization (HPH) were investigated, and the molecular docking was used to explore the enzyme inhibition mechanism. HPH increased total phenolic and total flavonoid contents in three fractions without changing compositions. The IC50 of radicals scavenged by three fractions were all reduced by HPH. The best inhibition on intracellular ROS production were found for phenolic fractions after HPH at 300 MPa, with ROS levels ranged within 95.26-119.16 %. HPH at 300 MPa reduced the apoptosis rates of FP and EP by 16.52 % and 9.33 %, respectively. All phenolic fractions showed effective inhibition on α-glucosidase and DPP-IV by formation of hydrogen bonding and van der Waals forces. This study explored the feasibility of HPH to enhance the phenolics and bioactivity of peach juice.
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Affiliation(s)
- Shenke Bie
- Faculty of Food Science and Engineering, Kunming University of Science and Technology, Kunming, Yunnan Province 650500, China
- Yunnan Engineering Research Center for Fruit & Vegetable Products, Kunming, Yunnan Province 650500, China
- International Green Food Processing Research and Development Center of Kunming City, Kunming, Yunnan Province 650500, China
- Yunnan Key Laboratory for Food Advanced Manufacturing, 650500 Kunming, China
| | - Shuai Zhao
- Faculty of Food Science and Engineering, Kunming University of Science and Technology, Kunming, Yunnan Province 650500, China
- Yunnan Engineering Research Center for Fruit & Vegetable Products, Kunming, Yunnan Province 650500, China
- International Green Food Processing Research and Development Center of Kunming City, Kunming, Yunnan Province 650500, China
- Yunnan Key Laboratory for Food Advanced Manufacturing, 650500 Kunming, China
| | - Shengbao Cai
- Faculty of Food Science and Engineering, Kunming University of Science and Technology, Kunming, Yunnan Province 650500, China
- Yunnan Engineering Research Center for Fruit & Vegetable Products, Kunming, Yunnan Province 650500, China
- International Green Food Processing Research and Development Center of Kunming City, Kunming, Yunnan Province 650500, China
- Yunnan Key Laboratory for Food Advanced Manufacturing, 650500 Kunming, China
| | - Junjie Yi
- Faculty of Food Science and Engineering, Kunming University of Science and Technology, Kunming, Yunnan Province 650500, China
- Yunnan Engineering Research Center for Fruit & Vegetable Products, Kunming, Yunnan Province 650500, China
- International Green Food Processing Research and Development Center of Kunming City, Kunming, Yunnan Province 650500, China
- Yunnan Key Laboratory for Food Advanced Manufacturing, 650500 Kunming, China
| | - Linyan Zhou
- Faculty of Food Science and Engineering, Kunming University of Science and Technology, Kunming, Yunnan Province 650500, China
- Yunnan Engineering Research Center for Fruit & Vegetable Products, Kunming, Yunnan Province 650500, China
- International Green Food Processing Research and Development Center of Kunming City, Kunming, Yunnan Province 650500, China
- Yunnan Key Laboratory for Food Advanced Manufacturing, 650500 Kunming, China
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Zhang J, Niu P, Li M, Wang Y, Ma Y, Wang P. Phytochemical Profiling and Biological Activities of Pericarps and Seeds Reveal the Controversy on "Enucleation" or "Nucleus-Retaining" of Cornus officinalis Fruits. Molecules 2024; 29:1473. [PMID: 38611753 PMCID: PMC11012811 DOI: 10.3390/molecules29071473] [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: 01/30/2024] [Revised: 03/12/2024] [Accepted: 03/22/2024] [Indexed: 04/14/2024] Open
Abstract
The fruits of Cornus officinalis are used not only as a popular health food to tonify the liver and kidney, but also as staple materials to treat dementia and other age-related diseases. The pharmacological function of C. officinalis fruits with or without seeds is controversial for treating some symptoms in a few herbal prescriptions. However, the related metabolite and pharmacological information between its pericarps and seeds are largely deficient. Here, comparative metabolomics analysis between C. officinalis pericarps and seeds were conducted using an ultra-performance liquid chromatography-electrospray ionization-tandem mass spectrometry, and therapeutic effects were also evaluated using several in vitro bioactivity arrays (antioxidant activity, α-glucosidase and cholinesterase inhibitory activities, and cell inhibitory properties). A total of 499 secondary metabolites were identified. Thereinto, 77 metabolites were determined as key differential metabolites between C. officinalis pericarps and seeds, and the flavonoid biosynthesis pathway was identified as the most significantly different pathway. Further, 47 metabolites were determined as potential bioactive constituents. In summary, C. officinalis seeds, which demonstrated higher contents in total phenolics, stronger in vitro antioxidant activities, better α-glucosidase and butyrylcholinesterase inhibitory activities, and stronger anticancer activities, exhibited considerable potential for food and health fields. This work provided insight into the metabolites and bioactivities of C. officinalis pericarps and seeds, contributing to their precise development and utilization.
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Affiliation(s)
- Jinyi Zhang
- School of Mechanical Engineering, Chongqing Three Gorges University, Chongqing 404100, China;
| | - Po Niu
- School of Mechanical Engineering, Chongqing Three Gorges University, Chongqing 404100, China;
| | - Mingjie Li
- Biological Laboratory, HBN Research Institute, Shenzhen Hujia Technology Co., Ltd., Shenzhen 518000, China;
| | - Yuan Wang
- Biological Laboratory, HBN Research Institute, Shenzhen Hujia Technology Co., Ltd., Shenzhen 518000, China;
| | - Yao Ma
- School of Agricultural Sciences, Zhengzhou University, Zhengzhou 450001, China;
- Henan Funiu Mountain Biological and Ecological Environment Observatory, Nanyang 474550, China
| | - Pan Wang
- Sichuan Academy of Agricultural Machinery Science, Chengdu 610066, China;
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Rakotondrabe TF, Fan M, Hu G, Guo M. Potential hemostatic compounds targeting urokinase plasminogen activator explored from three Euphorbiaceae species: Euphorbia maculata, Euphorbia humifusa, and Acalypha australis, with bio-affinity ultrafiltration UPLC-MS. PHYTOCHEMICAL ANALYSIS : PCA 2024; 35:28-39. [PMID: 37571866 DOI: 10.1002/pca.3270] [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: 06/08/2023] [Revised: 07/16/2023] [Accepted: 07/17/2023] [Indexed: 08/13/2023]
Abstract
INTRODUCTION Numerous species of the Euphorbiaceae family, including Euphorbia maculata, Euphorbia humifusa, and Acalypha australis, have been used to manage bleeding disorders. However, few investigations have demonstrated their hemostatic potential, and their procoagulant compounds remain elusive. OBJECTIVE This study aimed to determine the most active procoagulant extracts from the three species' crude extract (CE) and fractions in order to screen out the active compounds and to analyze their possible mechanisms of action. METHODS An integrative approach, comprising prothrombin time and activated partial thromboplastin time evaluations and urokinase-type plasminogen activator (uPA) inhibitory assessment, followed by bio-affinity ultrafiltration paired with UPLC/QTOF-MS targeting uPA and docking simulations, was used. RESULTS The extracts with highest procoagulant activity were the CE for both E. maculata (EMCE) and E. humifusa (EHCE) and the n-butanol fraction (NB) for A. australis (AANB). The most promising ligands, namely, isoquercetin, orientin, rutin, and brevifolin carboxylic acid, were selected from these lead extracts. All of these compounds exhibited pronounced specific binding values to the uPA target and showed tight intercalation with the crucial side chains forming the uPA active pocket, which may explain their mode of action. The activity validation substantiated their hemostatic effectivity in inhibiting uPA as they had better inhibition constant (Ki) values than the reference drug tranexamic acid. CONCLUSION Collectively, the integrative strategy applied to these three species allowed the elucidation of the mechanisms underlying their therapeutic effects on bleeding disorders, resulting in the fast detection of four potential hemostatic compounds and their mode of action.
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Affiliation(s)
- Tojofaniry Fabien Rakotondrabe
- Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, China
- Sino-Africa Joint Research Center, Chinese Academy of Sciences, Wuhan, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Minxia Fan
- Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, China
- Sino-Africa Joint Research Center, Chinese Academy of Sciences, Wuhan, China
| | - Guangwan Hu
- Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, China
- Sino-Africa Joint Research Center, Chinese Academy of Sciences, Wuhan, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Mingquan Guo
- Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, China
- Sino-Africa Joint Research Center, Chinese Academy of Sciences, Wuhan, China
- University of Chinese Academy of Sciences, Beijing, China
- Cixi Institute of Biomedical Engineering, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, China
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Feng Q, Yang W, Peng Z, Wang G. Utilizing bio-affinity ultrafiltration combined with UHPLC Q-Exactive Plus Orbitrap HRMS to detect potential α-glucosidase inhibitors in Oxalis corniculate L. Int J Biol Macromol 2023; 252:126490. [PMID: 37625761 DOI: 10.1016/j.ijbiomac.2023.126490] [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: 05/21/2023] [Revised: 08/04/2023] [Accepted: 08/22/2023] [Indexed: 08/27/2023]
Abstract
Oxalis corniculate L. (O. corniculate) was used to treat diabetes in Chinese folk as a popular tea drink. In this work, 31 compounds from O. corniculate were screened and identified as potential α-Glucosidase inhibitors (α-GIs). Among them, 6 compounds displayed stronger inhibitory activity than acarbose (IC50 = 212.9 ± 5.98 μg/mL). Especially, the most effective compounds quercetin (Qu, IC50 = 4.70 ± 0.40 μg/mL) and luteolin (Lu, IC50 = 15.72 ± 0.75 μg/mL) inhibited α-Glu in competitive and mixed manners, respectively. Moreover, fluorescence quenching, circular dichroism (CD), and molecular docking study revealed that they can arouse the changes in the secondary structure and hydrophobic micro-environment of the enzyme mainly through a hydrophobic binding. Furthermore, it was observed that oral administration of Qu (20 mg/kg) can significantly reduce postprandial blood glucose (PBG) levels in mice vs. the control group. To sum up, the above research confirmed that O. corniculate could prevent and treat postprandial hyperglycemia as a good tea drink, and the plant was an excellent source to obtain natural α-GIs.
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Affiliation(s)
- Qianqian Feng
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Provincial Key Laboratory of Pharmaceutics, Guizhou Medical University, Guiyang, China; School of Pharmacy, Guizhou Medical University, Guiyang, China
| | - Wei Yang
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Provincial Key Laboratory of Pharmaceutics, Guizhou Medical University, Guiyang, China; School of Pharmacy, Guizhou Medical University, Guiyang, China
| | - Zhiyun Peng
- Clinical Trails Center, The Affiliated Hospital of Guizhou Medical University, Guiyang, China.
| | - Guangcheng Wang
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Provincial Key Laboratory of Pharmaceutics, Guizhou Medical University, Guiyang, China.
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Galarce-Bustos O, Obregón C, Vallejos-Almirall A, Folch C, Acevedo F. Application of effect-directed analysis using TLC-bioautography for rapid isolation and identification of antidiabetic compounds from the leaves of Annona cherimola Mill. PHYTOCHEMICAL ANALYSIS : PCA 2023; 34:970-983. [PMID: 37488746 DOI: 10.1002/pca.3265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 06/29/2023] [Accepted: 07/03/2023] [Indexed: 07/26/2023]
Abstract
INTRODUCTION Type 2 diabetes mellitus is a globally prevalent chronic disease characterised by hyperglycaemia and oxidative stress. The search for new natural bioactive compounds that contribute to controlling this condition and the application of analytical methodologies that facilitate rapid detection and identification are important challenges for science. Annona cherimola Mill. is an important source of aporphine alkaloids with many bioactivities. OBJECTIVE The aim of this study is to isolate and identify antidiabetic compounds from alkaloid extracts with α-glucosidase and α-amylase inhibitory activity from A. cherimola Mill. leaves using an effect-directed analysis by thin-layer chromatography (TLC)-bioautography. METHODOLOGY Guided fractionation for α-glucosidase and α-amylase inhibitors in leaf extracts was done using TLC-bioassays. The micro-preparative TLC was used to isolate the active compounds, and the identification was performed by mass spectrometry associated with web-based molecular networks. Additionally, in vitro estimation of the inhibitory activity and antioxidant capacity was performed in the isolated compounds. RESULTS Five alkaloids (liriodenine, dicentrinone, N-methylnuciferine, anonaine, and moupinamide) and two non-alkaloid compounds (3-methoxybenzenepropanoic acid and methylferulate) with inhibitory activity were isolated and identified using a combination of simple methodologies. Anonaine, moupinamide, and methylferulate showed promising results with an outstanding inhibitory activity against both enzymes and antioxidant capacity that could contribute to controlling redox imbalance. CONCLUSIONS These high-throughput methodologies enabled a rapid isolation and identification of seven compounds with potential antidiabetic activity. To our knowledge, the estimated inhibitory activity of dicentrinone, N-methylnuciferine, and anonaine against α-glucosidase and α-amylase is reported here for the first time.
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Affiliation(s)
- Oscar Galarce-Bustos
- Laboratorio de Farmacognosia, Facultad de Farmacia, Universidad de Concepción, Concepción, Chile
| | - Camilo Obregón
- Laboratorio de Farmacognosia, Facultad de Farmacia, Universidad de Concepción, Concepción, Chile
| | - Alejandro Vallejos-Almirall
- Grupo Interdisciplinario de Biotecnología Marina (GIBMAR), Centro de Biotecnología, Universidad de Concepción, Concepción, Chile
| | - Christian Folch
- Departamento de Agroindustrias, Facultad de Ingeniería Agrícola, Universidad de Concepción, Chillán, Chile
| | - Francisca Acevedo
- Department of Basic Sciences, Faculty of Medicine, Universidad de La Frontera, Temuco, Chile
- Center of Excellence translational Medicine, Scientific and Technological Bioresource Nucleus, BIOREN, Universidad de La Frontera, Temuco, Chile
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Liu L, Jia W, Jiang S, Zhang G, Zhao J, Xu J, Wang L, Wu D, Tao J, Yue H, Zhao X. Inhibitory activities and rules of plant gallotannins with different numbers of galloyl moieties on sucrase, maltase and α-amylase in vitro and in vivo. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2023; 120:155063. [PMID: 37716036 DOI: 10.1016/j.phymed.2023.155063] [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: 07/12/2023] [Revised: 08/18/2023] [Accepted: 08/30/2023] [Indexed: 09/18/2023]
Abstract
BACKGROUND α-Glucosidase inhibitors could effectively reduce postprandial blood glucose (PBG) levels and control the occurrence of complications of diabetes. Gallotannins (GTs) in plants have attracted much attention due to their significant α-glucosidase inhibitory activities in vitro. However, there is still a lack of systematic comparative studies to further elucidate inhibitory activities in vivo and in vitro of these compounds against α-glucosidase, especially for mammalian sucrase and maltase, and analyze their structure-activity relationship. PURPOSE Determine the in vitro and in vivo inhibitory activities of five GTs with different number of galloyl moieties (GMs) on sucrase, maltase and α-amylase, and elucidate the relationship between α-glucosidase inhibitory activities and the number and connection mode of GMs. METHODS Molecular docking and dynamics were used to study the binding mode and binding ability of five GTs against sucrase, maltase and α-amylase. Then, the inhibitory activities and inhibitory mechanisms of these compounds on sucrase, maltase and α-amylase in vitro were studied using inhibitory assay and enzyme inhibition kinetics. Further, the hypoglycemic effects in vivo of these compounds were demonstrated by three polysaccharides tolerance experiments on diabetes model mice. RESULTS The results of molecular docking showed that these compounds could bind to enzymes through hydrogen bonds, hydrophobic interactions, etc. In addition, the α-glucosidase inhibition comparative studies in vitro and in vivo demonstrated that the inhibitory activities of these compounds on all three sucrase, maltase and α-amylase were ranked as TA ≈ PGG > TeGG > TGG > 1GG, and their inhibitory activities increases with the increase in the number of GMs. Moreover, the hypoglycemic effects of 1,2,3,4,6-pentagalloylglucose (PGG) and tannic acid (TA) in vitro and in vivo were also confirmed to be equivalent to or even stronger than that of acarbose. CONCLUSION α-Glucosidase inhibitory activities in vitro and in vivo of GTs were positively correlated with the number of GTs, and the more the number, the stronger the activity. However, PGG with five GTs and TA with ten GTs showed almost identical α-glucosidase inhibitory activities, possibly due to the reduced binding force with the enzyme caused by spatial hindrance.
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Affiliation(s)
- Liying Liu
- Key Laboratory of Tibetan Medicine Research, Northwest Institute of Plateau Biology, CAS and Qinghai Provincial Key Laboratory of Tibetan Medicine Research, 23 Xinning Road, Xining, Qinghai 810008, China; University of Chinese Academy of Sciences, China
| | - Wenjing Jia
- Key Laboratory of Tibetan Medicine Research, Northwest Institute of Plateau Biology, CAS and Qinghai Provincial Key Laboratory of Tibetan Medicine Research, 23 Xinning Road, Xining, Qinghai 810008, China; University of Chinese Academy of Sciences, China
| | - Sirong Jiang
- Key Laboratory of Tibetan Medicine Research, Northwest Institute of Plateau Biology, CAS and Qinghai Provincial Key Laboratory of Tibetan Medicine Research, 23 Xinning Road, Xining, Qinghai 810008, China; University of Chinese Academy of Sciences, China
| | - Guoying Zhang
- College of Ecological Environmental engineering, Qinghai University, China
| | - Jianzhong Zhao
- Agricultural and Rural Science and Technology Guidance Development Service Center of Qinghai Province, China
| | - Jiyu Xu
- College of Ecological Environmental engineering, Qinghai University, China
| | - Luya Wang
- Key Laboratory of Tibetan Medicine Research, Northwest Institute of Plateau Biology, CAS and Qinghai Provincial Key Laboratory of Tibetan Medicine Research, 23 Xinning Road, Xining, Qinghai 810008, China; University of Chinese Academy of Sciences, China
| | - Di Wu
- College of Ecological Environmental engineering, Qinghai University, China
| | - Jihong Tao
- Key Laboratory of Tibetan Medicine Research, Northwest Institute of Plateau Biology, CAS and Qinghai Provincial Key Laboratory of Tibetan Medicine Research, 23 Xinning Road, Xining, Qinghai 810008, China
| | - Huilan Yue
- Key Laboratory of Tibetan Medicine Research, Northwest Institute of Plateau Biology, CAS and Qinghai Provincial Key Laboratory of Tibetan Medicine Research, 23 Xinning Road, Xining, Qinghai 810008, China.
| | - Xiaohui Zhao
- Key Laboratory of Tibetan Medicine Research, Northwest Institute of Plateau Biology, CAS and Qinghai Provincial Key Laboratory of Tibetan Medicine Research, 23 Xinning Road, Xining, Qinghai 810008, China.
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10
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Tu J, Adhikari B, Brennan MA, Bai W, Cheng P, Brennan CS. Shiitake polysaccharides acted as a non-competitive inhibitor to α-glucosidase and inhibited glucose transport of digested starch from Caco-2 cells monolayer. Food Res Int 2023; 173:113268. [PMID: 37803584 DOI: 10.1016/j.foodres.2023.113268] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 07/09/2023] [Accepted: 07/11/2023] [Indexed: 10/08/2023]
Abstract
The inhibition mechanism of shitake mushroom polysaccharides (Lentinula edodes polysaccharides, LEP) against α-glucosidase was studied by enzyme kinetic assay, fluorescence quenching and molecular docking. The effect of LEP on glucose transport of digested starch was investigated via an in vitro digestion/Caco-2 transwell model. LEP exhibited a stronger inhibiting effect (IC50 = 0.66 mg/mL) than acarbose and presented a non-competitive inhibition mechanism. The interaction between LEP and α-glucosidase primarily involved electrostatic interaction and hydrogen bonding. Molecular docking modelling showed that the four structures of LEP were bound to the allosteric tunnel or adjacent pocket of α-glucosidase via electrostatic force and hydrogen bonds. The (1 → 6)-linkages in LEP structures favoured its binding affinity to the α-glucosidase. The α-glucosidase inhibiting activity of LEP was also found to emanate from the reduction in glucose transport of digested starch as deducted from the in vitro digestion/Caco-2 transwell data. The release of glucose from digested starch cooked with LEP was significantly reduced (33.7%) compared to the digested starch without LEP. The findings from the current study suggest that LEP could be a promising ingredient to inhibit α-glucosidase activity as well as control the level of postprandial blood glucose when incorporated into starchy foods.
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Affiliation(s)
- Juncai Tu
- School of Science, RMIT University, GPO Box 2474, Melbourne, VIC 3001, Australia
| | - Benu Adhikari
- School of Science, RMIT University, GPO Box 2474, Melbourne, VIC 3001, Australia.
| | - Margaret Anne Brennan
- School of Science, RMIT University, GPO Box 2474, Melbourne, VIC 3001, Australia; Department of Wine, Food and Molecular Biosciences, Lincoln University, PO Box 84, Lincoln 7647, Christchurch, New Zealand
| | - Weidong Bai
- College of Light Industry and Food Sciences, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Ping Cheng
- College of Light Industry and Food Sciences, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
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11
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Zhong X, Song R, Shan D, Ren X, Zheng Y, Lv F, Deng Q, He Y, Li X, Li R, Yan L, She G. Discovery of hepatoprotective activity components from Thymus quinquecostatus celak. by molecular networking, biological evaluation and molecular dynamics studies. Bioorg Chem 2023; 140:106790. [PMID: 37604095 DOI: 10.1016/j.bioorg.2023.106790] [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: 07/14/2023] [Revised: 08/04/2023] [Accepted: 08/14/2023] [Indexed: 08/23/2023]
Abstract
Thymus quinquecostatus Celak. is an edible herb that widely cultivated in Asia and possesses hepatoprotective activity, but the underlying non-volatile components of this protective activity are not well studied. In this study, combining molecular networking visualization and bioassay-guided fractionation strategies, a pair of novel skeleton diterpenoid enantiomers, (+)- and (-)-thymutatusone A [(+)- and (-)-1], along with one new and one known biogenetically related compounds (2-3) and 16 other known compounds (4-19), were identified from T. quinquecostatus. Their structures were exhaustively characterized by comprehensive spectroscopic data, X-ray diffraction analysis, and ECD calculations. Compounds (±)-1, (-)-1, and (+)-1, with a rare tricyclo [7.3.1.02,7] tridecane skeleton, exhibited potent hepatoprotective activity in HepG2 cells injured by acetaminophen, with EC50 values of 11.5 ± 2.8, 8.4 ± 1.9, and 12.2 ± 0.3 μM respectively. They were more potent than positive drug bifendate (EC50 15.2 ± 1.3). Further, the underlying mechanism for the hepatoprotective activity of compound (-)-1 related to activating the Nrf 2 signaling pathway. What's more, molecular docking and molecular dynamics simulation analysis showed that compound (-)-1 could dock with the active site of Nrf 2 protein and form a stable system through hydrogen bonding. These results suggest that T. quinquecostatus can be used as a valuable source of hepatoprotective activity compounds.
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Affiliation(s)
- Xiangjian Zhong
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 102488, People's Republic of China
| | - Ruolan Song
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 102488, People's Republic of China
| | - Dongjie Shan
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 102488, People's Republic of China
| | - Xueyang Ren
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 102488, People's Republic of China
| | - Yuan Zheng
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 102488, People's Republic of China
| | - Fang Lv
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 102488, People's Republic of China
| | - Qingyue Deng
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 102488, People's Republic of China
| | - Yingyu He
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 102488, People's Republic of China
| | - Xianxian Li
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 102488, People's Republic of China
| | - Ruiwen Li
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 102488, People's Republic of China
| | - Li Yan
- Analysis & Testing Center, Beijing Institute of Technology, Beijing 102488, People's Republic of China
| | - Gaimei She
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 102488, People's Republic of China.
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12
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Guo F, An J, Wang M, Zhang W, Chen C, Mao X, Liu S, Wang P, Ren F. Inhibitory Mechanism of Quercimeritrin as a Novel α-Glucosidase Selective Inhibitor. Foods 2023; 12:3415. [PMID: 37761124 PMCID: PMC10528180 DOI: 10.3390/foods12183415] [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: 08/10/2023] [Revised: 09/07/2023] [Accepted: 09/08/2023] [Indexed: 09/29/2023] Open
Abstract
In this study, 12 flavonoid glycosides were selected based on virtual screening and the literature, and Quercimeritrin was selected as the best selective inhibitor of α-glucosidase through in vitro enzyme activity inhibition experiments. Its IC50 value for α-glucosidase was 79.88 µM, and its IC50 value for α-amylase >250 µM. As such, it could be used as a new selective inhibitor of α-glucosidase. The selective inhibition mechanism of Quercimeritrin on the two starch-digesting enzymes was further explored, and it was confirmed that Quercimeritrin had a strong binding affinity for α-glucosidase and occupied the binding pocket of α-glucosidase through non-covalent binding. Subsequently, animal experiments demonstrated that Quercimeritrin can effectively control postprandial blood glucose in vivo, with the same inhibitory effect as acarbose but without side effects. Our results, therefore, provide insights into how flavone aglycones can be used to effectively control the rate of digestion to improve postprandial blood glucose levels.
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Affiliation(s)
- Fengyu Guo
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; (F.G.); (X.M.)
| | - Jie An
- Department of Nutrition and Health, China Agricultural University, Beijing 100083, China; (J.A.); (M.W.); (W.Z.); (C.C.); (S.L.)
| | - Minlong Wang
- Department of Nutrition and Health, China Agricultural University, Beijing 100083, China; (J.A.); (M.W.); (W.Z.); (C.C.); (S.L.)
| | - Weibo Zhang
- Department of Nutrition and Health, China Agricultural University, Beijing 100083, China; (J.A.); (M.W.); (W.Z.); (C.C.); (S.L.)
| | - Chong Chen
- Department of Nutrition and Health, China Agricultural University, Beijing 100083, China; (J.A.); (M.W.); (W.Z.); (C.C.); (S.L.)
| | - Xueying Mao
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; (F.G.); (X.M.)
| | - Siyuan Liu
- Department of Nutrition and Health, China Agricultural University, Beijing 100083, China; (J.A.); (M.W.); (W.Z.); (C.C.); (S.L.)
- Food Laboratory of Zhongyuan, China Agricultural University, Beijing 100083, China
| | - Pengjie Wang
- Department of Nutrition and Health, China Agricultural University, Beijing 100083, China; (J.A.); (M.W.); (W.Z.); (C.C.); (S.L.)
- Food Laboratory of Zhongyuan, China Agricultural University, Beijing 100083, China
| | - Fazheng Ren
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; (F.G.); (X.M.)
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13
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Xie L, Huang J, Xiong T, Ma Y. Secondary Metabolomic Analysis and In Vitro Bioactivity Evaluation of Stems Provide a Comprehensive Comparison between Dendrobium chrysotoxum and Dendrobium thyrsiflorum. Molecules 2023; 28:6039. [PMID: 37630293 PMCID: PMC10458425 DOI: 10.3390/molecules28166039] [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: 07/18/2023] [Revised: 08/11/2023] [Accepted: 08/11/2023] [Indexed: 08/27/2023] Open
Abstract
The stems of Dendrobium chrysotoxum (DC) are commonly used as health-promoting foods due to their excellent biological activities. However, the stems of D. thyrsiflorum (DT) are often used to meet the scarcity of DC in production because of their highly similar morphology. However, the related metabolomic and bioactive information on the stems of DC and DT are largely deficient. Here, secondary metabolites of DC and DT stems were identified using an ultra-performance liquid chromatography-electrospray ionization-mass spectrometry, and their health-promoting functions were evaluated using several in vitro arrays. A total of 490 metabolites were identified in two stems, and 274 were significantly different. We screened out 10 key metabolites to discriminate the two species, and 36 metabolites were determined as health-promoting constituents. In summary, DT stems with higher extract yield, higher total phenolics and flavonoids, and stronger in vitro antioxidant activities demonstrated considerable potential in food and health fields.
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Affiliation(s)
- Lihang Xie
- Academy of Medical Sciences, Zhengzhou University, Zhengzhou 450000, China; (L.X.); (T.X.)
| | - Jinyong Huang
- School of Life Sciences, Zhengzhou University, Zhengzhou 450001, China;
- Henan Funiu Mountain Biological and Ecological Environment Observatory, Nanyang 473000, China
| | - Tingjian Xiong
- Academy of Medical Sciences, Zhengzhou University, Zhengzhou 450000, China; (L.X.); (T.X.)
| | - Yao Ma
- Henan Funiu Mountain Biological and Ecological Environment Observatory, Nanyang 473000, China
- School of Agricultural Sciences, Zhengzhou University, Zhengzhou 450001, China
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14
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Wang R, Fan R, Meng T, Wang L. Exploration of the inhibitory mechanisms of trans-polydatin/resveratrol on α-glucosidase by multi-spectroscopic analysis, in silico docking and molecular dynamics simulation. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 299:122866. [PMID: 37201332 DOI: 10.1016/j.saa.2023.122866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 04/11/2023] [Accepted: 05/10/2023] [Indexed: 05/20/2023]
Abstract
Plant-derived phenolics as natural α-glucosidase (α-GLU) inhibitors have attached great attention in the treatment of type-II diabetes mellitus currently. In this study, trans-polydatin and its aglycone resveratrol were found to show a notable inhibitory activity on α-GLU in a mixed-type manner with IC50 values of 18.07 and 16.73 μg/mL, respectively, which were further stronger than anti-diabetic drug acrabose (IC50 = 179.86 μg/mL). Multi-spectroscopic analysis results indicated that polydatin/resveratrol bound to α-GLU with one affinity binding site which was mainly driven by hydrogen bonds and van der Waals forces, and this binding process resulted in conformational alteration of α-GLU. In silico docking study showed that polydatin/resveratrol can well interact with the surrounding amino acid residues in the active cavity of α-GLU. Molecular dynamics simulation further clarified the structure and characterization of α-GLU-polydatin/resveratrol complexes. This study might supply a theoretical basis for the designing of novel functional foods with polydatin/resveratrol.
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Affiliation(s)
- Ruimin Wang
- School of Food Science and Engineering, Hainan University, Haikou 570228, PR China
| | - Ruyan Fan
- School of Food Science and Engineering, Hainan University, Haikou 570228, PR China
| | - Tingyu Meng
- School of Food Science and Engineering, Hainan University, Haikou 570228, PR China
| | - Lu Wang
- School of Food Science and Engineering, Hainan University, Haikou 570228, PR China; Key Laboratory of Food Nutrition and Functional Food of Hainan Province, Hainan University, Haikou 570228, PR China.
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15
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Çomaklı V, Sağlamtaş R, Kuzu M, Karagöz Y, Aydın T, Demirdağ R. Enzyme Inhibition and Antioxidant Activities of Asparagus officinalis L. and Analysis of Its Phytochemical Content by LC/MS/MS. Chem Biodivers 2023; 20:e202201231. [PMID: 37096958 DOI: 10.1002/cbdv.202201231] [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: 12/24/2022] [Accepted: 04/06/2023] [Indexed: 04/26/2023]
Abstract
In the study, water, ethanol, methanol, dichloromethane, and acetone extracts of Asparagus officinalis L. were obtained by maceration. DPPH⋅, ABTS⋅+ , FRAP, and CUPRAC methods determined the antioxidant capacities of all extracts. Moreover, the in vitro effects of extracts on acetylcholinesterase (AChE), butyrylcholinesterase (BChE), carbonic anhydrase (CA)-I, CA-II and α-Glycosidase were investigated. At a 10 μg/ml concentration, the extract with the highest Fe3+ reduction capacity was ethanol (AE), and the extract with the highest Cu2+ reduction capacity was acetone (AA). AE for AChE (IC50 =21.19 μg/ml) and α-Glycosidase (IC50 : 70.00 μg/ml), methanol (AM) for BChE (IC50 =17.33 μg/ml), CA-I and II (IC50 =79.65 and 36.09 μg/ml, respectively) showed the most potent inhibition effect. The content analysis of acetone extract was performed with LC/MS-MS, the first three phytochemicals found most were p-Coumaric acid, rutin, and 4-hydroxybenzoic acid (284.29±3.97, 135.39±8.19, and 102.06±5.51 μg analyte/g extract, respectively).
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Affiliation(s)
- Veysel Çomaklı
- Department of Nutrition and Dietetics, İbrahim Çeçen University of Ağrı, Ağrı, Türkiye
| | - Rüya Sağlamtaş
- Department of Medical Services and Techniques, İbrahim Çeçen University of Ağrı, Ağrı, Türkiye
| | - Müslüm Kuzu
- Department of Nutrition and Dietetics, Karabük University, Karabük, Türkiye
| | - Yalçın Karagöz
- Department of Pharmaceutical Botany, İbrahim Çeçen University of Ağrı, Ağrı, Türkiye
| | - Tuba Aydın
- Department of Pharmacognosy, İbrahim Çeçen University of Ağrı, Ağrı, Türkiye
| | - Ramazan Demirdağ
- Department of Nutrition and Dietetics, İbrahim Çeçen University of Ağrı, Ağrı, Türkiye
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16
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Tuohongerbieke A, Liu L, Li J, Xin X, Akber Aisa H. Root-Extracted lignanamides from Limonium gmelinii (Willd.) Kuntze with a potential PTP1B inhibitory activity by regulating PI3K/AKT signaling pathway. Bioorg Chem 2023; 132:106348. [PMID: 36657274 DOI: 10.1016/j.bioorg.2023.106348] [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: 10/31/2022] [Revised: 12/26/2022] [Accepted: 01/06/2023] [Indexed: 01/09/2023]
Abstract
The phytochemical study of Limonium gmelinii roots resulted in the isolation of five lignanamides (1-5). Among them, limoniumins J, K, and M (1, 2, and 4) are undescribed compounds, limoniumin L (3) is a new naturally occurring lignanamide, and limoniumin B (5) is a known compound which showed PTP1B inhibition activity with an IC50 value of 5.05 ± 2.44 μM in our previous work. Spectroscopic data analysis, including 1D and 2D NMR and HRESIMS experiments, established the chemical structures of limoniumins J - M (1-4). Compounds 1-4 showed PTP1B inhibition activity, among which compound 3 showed the most potent PTP1B inhibition with an IC50 value of 2.07 ± 0.05 μM. Compounds 3 and 5 could significantly increase cellular glucose consumption and glucose uptake in L6 muscle cells and could synergize with insulin to promote glucose consumption and glucose uptake in a concentration-dependent manner. The treatment of compound 3 also promoted glycogen synthesis in skeletal muscle cells. Western blot analysis demonstrated that the good hypoglycemic effect of compounds 3 and 5 was achieved by activating PI3K/AKT signaling pathway to promote glucose consumption, glucose uptake, and glycogen synthesis. Furthermore, studies on molecular docking revealed the potent interactions between these bioactive substances and the PTP1B protein.
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Affiliation(s)
- Amanguli Tuohongerbieke
- The Key Laboratory of Plant Resources and Chemistry of Arid Zone and State Key Laboratory Basis of Xinjiang Indigenous Medicinal Plants Resource Utilization, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi 830011, China
| | - Liu Liu
- The Key Laboratory of Plant Resources and Chemistry of Arid Zone and State Key Laboratory Basis of Xinjiang Indigenous Medicinal Plants Resource Utilization, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi 830011, China
| | - Jun Li
- The Key Laboratory of Plant Resources and Chemistry of Arid Zone and State Key Laboratory Basis of Xinjiang Indigenous Medicinal Plants Resource Utilization, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi 830011, China
| | - Xuelei Xin
- The Key Laboratory of Plant Resources and Chemistry of Arid Zone and State Key Laboratory Basis of Xinjiang Indigenous Medicinal Plants Resource Utilization, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi 830011, China
| | - Haji Akber Aisa
- The Key Laboratory of Plant Resources and Chemistry of Arid Zone and State Key Laboratory Basis of Xinjiang Indigenous Medicinal Plants Resource Utilization, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi 830011, China; Zhongshan Institute for Drug Discovery, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Zhongshan, Guangdong 528400, China.
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17
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Shahidi F, Hossain A. Importance of Insoluble-Bound Phenolics to the Antioxidant Potential Is Dictated by Source Material. Antioxidants (Basel) 2023; 12:antiox12010203. [PMID: 36671065 PMCID: PMC9854999 DOI: 10.3390/antiox12010203] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2022] [Revised: 01/11/2023] [Accepted: 01/13/2023] [Indexed: 01/19/2023] Open
Abstract
Insoluble-bound phenolics (IBPs) are extensively found in the cell wall and distributed in various tissues/organs of plants, mainly cereals, legumes, and pulses. In particular, IBPs are mainly distributed in the protective tissues, such as seed coat, pericarp, and hull, and are also available in nutritional tissues, including germ, epicotyl, hypocotyl radicle, and endosperm, among others. IBPs account for 20-60% of the total phenolics in food matrices and can exceed 70% in leaves, flowers, peels, pulps, seeds, and other counterparts of fruits and vegetables, and up to 99% in cereal brans. These phenolics are mostly covalently bound to various macromolecules such as hemicellulose, cellulose, structural protein, arabinoxylan, and pectin, which can be extracted by acid, alkali, or enzymatic hydrolysis along with various thermal and non-thermal treatments. IBPs obtained from various sources exhibited a wide range of biological activities, including antioxidant, anti-inflammatory, antihypertensive, anticancer, anti-obesity, and anti-diabetic properties. In this contribution, the chemistry, distribution, biological activities, metabolism, and extraction methods of IBPs, and how they are affected by various treatments, are summarized. In particular, the effect of thermal and non-thermal processing on the release of IBPs and their antioxidant potential is discussed.
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18
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Zhong X, Yan X, Liu W, Tian Y, Song R, Dong Y, Ren X, Zheng Y, Shan D, Lv F, Li X, Deng Q, He Y, Yuan R, She G. Sesquiterpenoids isolated from the rhizome of Curcuma phaeocaulis Valeton: antitumor activity, in silico molecular docking and molecular dynamics study. NEW J CHEM 2023. [DOI: 10.1039/d2nj06011f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
Abstract
This work provides a deep insight into new sesquiterpenoids isolated from Curcumae Rhizoma acting as potential antitumor activity inhibitors.
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Affiliation(s)
- Xiangjian Zhong
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 102488, China
| | - Xin Yan
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 102488, China
| | - Weirui Liu
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 102488, China
| | - Yuxin Tian
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 102488, China
| | - Ruolan Song
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 102488, China
| | - Ying Dong
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 102488, China
| | - Xueyang Ren
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 102488, China
| | - Yuan Zheng
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 102488, China
| | - Dongjie Shan
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 102488, China
| | - Fang Lv
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 102488, China
| | - Xianxian Li
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 102488, China
| | - Qingyue Deng
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 102488, China
| | - Yingyu He
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 102488, China
| | - Ruijuan Yuan
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 102488, China
| | - Gaimei She
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 102488, China
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19
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Peng J, Abdulla R, Li Y, Liu XY, He F, Xin XL, Aisa HA. Potential anti-diabetic components of Apocynum venetum L. flowers: Optimization, chemical characterization and quality evaluation. J Food Compost Anal 2023. [DOI: 10.1016/j.jfca.2022.104930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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20
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Becker D, Stegmüller S, Richling E. Characterization of brewer's spent grain extracts by tandem mass spectrometry and
HPLC‐DAD
: Ferulic acid dehydrodimers, phenolamides, and oxylipins. Food Sci Nutr 2022; 11:2298-2320. [PMID: 37181325 PMCID: PMC10171517 DOI: 10.1002/fsn3.3178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 11/25/2022] [Accepted: 11/29/2022] [Indexed: 12/24/2022] Open
Abstract
Brewer's spent grain (BSG) is a major by-product of the brewing industry which is generated in high amounts. In recent years, sustainable food production has become more and more important. BSG mainly used as cattle feed has gained high interest due to not only its valuable ingredients such as fiber and proteins but also secondary metabolites remaining in BSG after the brewing process and known for many biological effects. In the present study, various methods were applied, such as acetone extraction (A), alkaline hydrolysis followed by ethyl acetate extraction (HE), and acetone extraction of alkaline hydrolysis residue (HA). Compounds present in the respective bioactive extracts were characterized by mass spectrometry to identify the active compounds. Various hydroxycinnamic acid derivatives as well as oxylipins and some dicarboxylic acids, such as azelaic acid, were present in HE and HA extracts. In contrast, some catechins and phenolamides, such as numerous hordatines, as well as oxylipins and phospholipids were detected in A extracts. Quantification using HPLC-DAD revealed hordatine contents up to 172.2 ± 2.1 μg p-coumaric acid equivalents/mg extract. Hydroxycinnamic acid derivatives content accounted for up to 48% of the total extract (HE extracts) but only around 3% of the total HA extracts. In summary, all extracts contained secondary plant metabolites belonging to different classes, ranging from hydroxycinnamic acids to phenolamides, such as not only hordatines but also oxylipins, which were identified for the first time in BSG.
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Affiliation(s)
- Daniela Becker
- Department of Chemistry, Division of Food Chemistry and Toxicology Rheinland‐Pfälzische Technische Universität Kaiserslautern‐Landau Kaiserslautern Germany
| | - Simone Stegmüller
- Department of Chemistry, Division of Food Chemistry and Toxicology Rheinland‐Pfälzische Technische Universität Kaiserslautern‐Landau Kaiserslautern Germany
| | - Elke Richling
- Department of Chemistry, Division of Food Chemistry and Toxicology Rheinland‐Pfälzische Technische Universität Kaiserslautern‐Landau Kaiserslautern Germany
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21
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Oliveira ALS, Carvalho MJ, Oliveira DL, Costa E, Pintado M, Madureira AR. Sugarcane Straw Polyphenols as Potential Food and Nutraceutical Ingredient. Foods 2022; 11:foods11244025. [PMID: 36553767 PMCID: PMC9777897 DOI: 10.3390/foods11244025] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 11/11/2022] [Accepted: 11/23/2022] [Indexed: 12/23/2022] Open
Abstract
The sugarcane processing industry generates a large amount of straw, which has a negative environmental impact, and high costs are associated with their elimination, wasting their potential bioactive value attributed to their richness in polyphenols. In this study, an ethanolic extract produced from sugarcane straw was screened for its phenolic compounds content, and the potential use of this extract in the development of a food ingredient was further evaluated. Fifty different secondary metabolites belonging to the hydroxybenzoic acids, hydroxycinnamic acids, and flavonoids were identified by liquid chromatography-electrospray ionization-ultrahigh-resolution-quadrupole time of flight-mass spectrometry (LC-ESI-UHR-QqTOF-MS). The predominant phenolic compounds found were 4-hydroxybenzaldehyde, chlorogenic acid, and 5-O-feruloylquinic acid. The obtained extracts showed strong potential as food preservatives by exhibiting (a) antioxidant activity using both 2.2'-azino-bis (3-ethylbenzothiazoline-6-sulphonic acid) diammonium salt radical cation (ABTS) and 2,2-diphenyl-1-picrylhydrazyl (DPPH) methods; and (b) antimicrobial capacity, with a minimum inhibitory concentration of 50 mg/mL for Staphylococcus aureus, 74% inhibition for Bacillus cereus, and 44% for Salmonella enterica; and (c) the capacity to inhibit a food browning enzyme, tyrosinase (28-73% for 1-8 mg/ mL). Moreover, the extracts showed antidiabetic potential by inhibiting the enzymes α-glucosidase (15-38% for 1.25-5.00 mg/mL) and dipeptidyl peptidase-IV (DPP-IV) (62-114% for 0.31-5.00 mg/mL). The extract (0.625 mg/mL) also exhibited the capacity to reduce proinflammatory mediators (i.e., interleukins 6 and 8, and tumor necrosis factor alpha) when Caco-2 cells were stimulated with interleukin 1 beta. Thus, sugarcane straw extract, which is rich in phenolic compounds, showed high potential to be used in the development of food-preservative ingredients owing to its antioxidant and antimicrobial potential, and to be explored as a food supplement in diabetes prevention and as coadjuvant to reduce intestinal inflammation by reducing proinflammatory mediators.
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Li S, Zhang W, Wang R, Li C, Lin X, Wang L. Screening and identification of natural α-glucosidase and α-amylase inhibitors from partridge tea (Mallotus furetianus Muell-Arg) and in silico analysis. Food Chem 2022; 388:133004. [PMID: 35483282 DOI: 10.1016/j.foodchem.2022.133004] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 04/13/2022] [Accepted: 04/17/2022] [Indexed: 11/25/2022]
Abstract
Partridge leaves (Mallotus furetianus Muell-Arg.) have long been consumed as popular folk substitute tea for treating hyperglycemia in China. In this study, the inhibiting effects of partridge tea extracts on α-glucosidase and α-amylase were investigated, and then effect of partridge tea aqueous extracts (PTAEs) on glucose consumption capacity of 3 T3-L1 preadipocytes cells was determined. Results verified that PTAEs showed excellent anti-α-glucosidase and anti-α-amylase effects. In addition, the PTAEs evidently promoted glucose consumption capacity of 3T3L1 preadipocytes cells. To this end, a combined method of affinity ultrafiltration and HPLC-ESI-qTOF-MS/MS was used for rapidly screening and identifying the potential inhibitors in the PTAEs. Catechin, epicatechin, rutin, ferulic acid, and kaempferitrin with high affinity capacity indicated strong inhibiting effect on α-glucosidase and α-amylase. Docking studies revealed the potential interactive mechanisms between these major inhibitors and two digestive enzymes. This research shows that partridge tea is effective in preventing and treating post hyperglycemia.
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Affiliation(s)
- Songjie Li
- School of Food Science and Engineering, Hainan University, Haikou 570228, PR China
| | - Weimin Zhang
- School of Food Science and Engineering, Hainan University, Haikou 570228, PR China; Key Laboratory of Food Nutrition and Functional Food of Hainan Province, Hainan University, Haikou 570228, PR China
| | - Ruimin Wang
- School of Food Science and Engineering, Hainan University, Haikou 570228, PR China
| | - Congfa Li
- School of Food Science and Engineering, Hainan University, Haikou 570228, PR China; Key Laboratory of Food Nutrition and Functional Food of Hainan Province, Hainan University, Haikou 570228, PR China
| | - Xue Lin
- School of Food Science and Engineering, Hainan University, Haikou 570228, PR China; Key Laboratory of Food Nutrition and Functional Food of Hainan Province, Hainan University, Haikou 570228, PR China
| | - Lu Wang
- School of Food Science and Engineering, Hainan University, Haikou 570228, PR China; Key Laboratory of Food Nutrition and Functional Food of Hainan Province, Hainan University, Haikou 570228, PR China.
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Rakotondrabe TF, Fan M, Guo M. Exploring potential antidiabetic and anti-inflammatory flavonoids from Euphorbia humifusa with an integrated strategy. Front Pharmacol 2022; 13:980945. [PMID: 36105200 PMCID: PMC9465062 DOI: 10.3389/fphar.2022.980945] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 08/01/2022] [Indexed: 11/30/2022] Open
Abstract
E. humifusa Willd, a monoecious annual plant, native to Eastern Asia, has been traditionally attributed to the treatment and prevention of miscellaneous diseases, including diabetes mellitus and its associated complications. Earlier studies have supported this species’ pharmacological efficacies including its antibacterial, antidiabetic, and anti-inflammatory properties. Even so, the underlying bioactive components with their mechanisms of action associated with its antidiabetic and anti-inflammatory effects remain elusive. The preamble in vitro assessments of the crude extract and its different fractions revealed that the n-butanol fraction (EHNB) exhibited the best activity, which was subsequently subjected to a rapid screening of candidate ligands through bio-affinity ultrafiltration with the two enzyme targets: α-glucosidase (α-Glu) and cycloxygenase-2 (COX-2) combined with UPLC/QTOF-MS. As a result, 7 compounds were identified from EHNB, among them, vitexin and astragalin were screened out as the most active ligand compounds. Vitexin showed great specific binding (SB) affinity values of 1.26 toward α-Glu and 1.32 toward COX-2, while astragalin showed 1.32 and 1.36, respectively. The docking simulation results exhibited strong interactions of vitexin and astragalin with the key residues of the enzyme targets, suggesting their possible mechanisms of action. The in vitro antidiabetic validation revealed noticeable half-maximal inhibitory effects (IC50) of 36.38 ± 3.06 µM for vitexin and 42.47 ± 4.13 µM for astragalin, much better than that of the positive drug acarbose (109.54 ± 14.23 µM). Similarly, these two compounds showed the inhibitory activity against COX-2 with the half-maximal inhibitory effects (IC50) at 27.91 ± 1.74 µM and 49.05 ± 1.49 µM, respectively. Therefore, these two flavonoid compounds (vitexin and astragalin) were speculated as potential antidiabetic and anti-inflammatory compounds from E. humifusa. Taken together, the integrated strategy applied to E. humifusa led to the fast identification of two potential double-acting flavonoids and enlightened its antidiabetic and anti-inflammatory uses. Besides these findings, the integrated strategy in this study could also be used to facilitate the rapid discovery and development of active candidates from other traditional herbal medicines against multi-drug targets and to aid in revealing their mechanisms of action for their traditional uses.
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Affiliation(s)
- Tojofaniry Fabien Rakotondrabe
- CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, China
- University of Chinese Academy of Sciences, Beijing, China
- Sino-Africa Joint Research Center, Chinese Academy of Sciences, Wuhan, China
| | - Minxia Fan
- CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, China
- Sino-Africa Joint Research Center, Chinese Academy of Sciences, Wuhan, China
- Innovation Academy for Drug Discovery and Development, Chinese Academy of Sciences, Shanghai, China
| | - Mingquan Guo
- CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, China
- University of Chinese Academy of Sciences, Beijing, China
- Sino-Africa Joint Research Center, Chinese Academy of Sciences, Wuhan, China
- Innovation Academy for Drug Discovery and Development, Chinese Academy of Sciences, Shanghai, China
- *Correspondence: Mingquan Guo,
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Yang Y, He J, Jiang Z, Du X, Chen F, Wang J, Ni H. Characterization of the inhibition of aldose reductase with
p
‐coumaric acid ethyl ester. J Food Biochem 2022; 46:e14370. [DOI: 10.1111/jfbc.14370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 06/14/2022] [Accepted: 07/22/2022] [Indexed: 12/01/2022]
Affiliation(s)
- Yuanfan Yang
- College of Ocean Food and Biological Engineering Jimei University Xiamen China
- Fujian Provincial Key Laboratory of Food Microbiology and Enzyme Engineering Xiamen China
- Research Center of Food Biotechnology of Xiamen City Xiamen China
| | - Junzhu He
- College of Ocean Food and Biological Engineering Jimei University Xiamen China
| | - Zedong Jiang
- College of Ocean Food and Biological Engineering Jimei University Xiamen China
- Fujian Provincial Key Laboratory of Food Microbiology and Enzyme Engineering Xiamen China
- Research Center of Food Biotechnology of Xiamen City Xiamen China
| | - Xiping Du
- College of Ocean Food and Biological Engineering Jimei University Xiamen China
- Fujian Provincial Key Laboratory of Food Microbiology and Enzyme Engineering Xiamen China
- Research Center of Food Biotechnology of Xiamen City Xiamen China
| | - Feng Chen
- Department of Food, Nutrition and Packaging Sciences Clemson University Clemson South Carolina USA
| | - Jinling Wang
- School of Forestry Northeast Forestry University Harbin China
| | - Hui Ni
- College of Ocean Food and Biological Engineering Jimei University Xiamen China
- Fujian Provincial Key Laboratory of Food Microbiology and Enzyme Engineering Xiamen China
- Research Center of Food Biotechnology of Xiamen City Xiamen China
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Characterization of phenolics and discovery of α-glucosidase inhibitors in Artemisia argyi leaves based on ultra-performance liquid chromatography-tandem mass spectrometry and relevance analysis. J Pharm Biomed Anal 2022; 220:114982. [PMID: 35944337 DOI: 10.1016/j.jpba.2022.114982] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2022] [Revised: 07/30/2022] [Accepted: 08/03/2022] [Indexed: 12/20/2022]
Abstract
Artemisia argyi leaves (AAL) has been widely used as herbal medicine and food supplement and in China and other Asian countries. The aim of this work is to qualitative and quantitative characterization of phenolic compounds in AAL and screening of natural product inhibitors of α-glucosidase from AAL. Ultra-performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometry (UPLC-Q/TOF-MS) was employed to rapid and comprehensive identification of phenolic compounds in AAL, and a total of thirty-three phenolic compounds were identified. High performance liquid chromatography with diode array detection (HPLC-DAD) was established and validated to simultaneously determinate ten main bioactive phenolics compounds in different batches of AAL samples. Meanwhile, the inhibitory capacities of different batches of AAL samples on α-glucosidase were evaluated. Then, relevance analysis, including grey relational analysis and Pearson correlation analysis were employed to investigate the correlations between the contents of phenolic compounds and α-glucosidase inhibitory activities, and discover the α-glucosidase inhibitors in AAL. The relevance analysis results indicated that three phenolic compounds, 3-caffeoylquinic acid, 3,4-dicaffeoylquinic acid and 3,5-dicaffeoylquinic acid could be potential α-glucosidase inhibitors in AAL. Moreover, the α-glucosidase inhibitory activities of the three phenolic compounds were validated by in vitro and in vivo experiments. The possible inhibiting effect of the three phenolic compounds on α-glucosidase was also explored by molecular docking analysis, and the results indicated that the binding of the three α-glucosidase inhibitors to α-glucosidase mainly by hydrogen bonds, hydrophobic forces and ionic bonds. The present research provided a deep insight into phenolic compounds and α-glucosidase inhibitory activities of AAL, and discovered the α-glucosidase inhibitors in AAL.
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Wang Y, Xu X, Chen J, Ye X, Pan H, Chen S. Improving Regulation of Polymeric Proanthocyanidins and Tea Polyphenols against Postprandial Hyperglycemia via Acid-Catalyzed Transformation. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:5218-5227. [PMID: 35426661 DOI: 10.1021/acs.jafc.2c01128] [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: 06/14/2023]
Abstract
A novel protocol was established to synthesize novel α-glucosidase inhibitors (prodelphinidin B gallates) from proanthocyanidins from Chinese bayberry leaves (BLPs) and epigallocatechin gallate (EGCG) via acid-catalyzed transformation, which had improved regulation against postprandial hyperglycemia. Their structural-activity relationship was clarified by enzymatic kinetics, multispectroscopic method, molecular docking analysis, and sucrose loading test. ProDB MG and DG were noncompetitive inhibitors of α-glucosidase with IC50 values of 7.82 and 7.52 μg/mL, respectively. They bound with α-glucosidase spontaneously through van der Waals force and hydrogen bonding interaction, inducing the change of spatial conformation and secondary structure of α-glucosidase. Molecular docking studies suggested that proDB MG and DG attached to another one nonactive pocket with strong affinity. ProDB DG exerted significant improvement of postprandial hyperglycemia in a dose-dependent manner. Hence, proDB MG and DG, potential antidiabetic compounds, alleviate postprandial hyperglycemia by inhibiting α-glucosidase.
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Affiliation(s)
- Yi Wang
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang Engineering Laboratory of Food Technology and Equipment, Fuli Institute of Food Science, Zhejiang University, Hangzhou 310058, P. R. China
| | - Xinlei Xu
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang Engineering Laboratory of Food Technology and Equipment, Fuli Institute of Food Science, Zhejiang University, Hangzhou 310058, P. R. China
| | - Jianle Chen
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang Engineering Laboratory of Food Technology and Equipment, Fuli Institute of Food Science, Zhejiang University, Hangzhou 310058, P. R. China
- Ningbo Research Institute, Zhejiang University, Ningbo 315100, P. R.China
| | - Xingqian Ye
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang Engineering Laboratory of Food Technology and Equipment, Fuli Institute of Food Science, Zhejiang University, Hangzhou 310058, P. R. China
- Ningbo Research Institute, Zhejiang University, Ningbo 315100, P. R.China
- Zhejiang University Zhongyuan Institute, Zhengzhou 450000, P. R. China
| | - Haibo Pan
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang Engineering Laboratory of Food Technology and Equipment, Fuli Institute of Food Science, Zhejiang University, Hangzhou 310058, P. R. China
| | - Shiguo Chen
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang Engineering Laboratory of Food Technology and Equipment, Fuli Institute of Food Science, Zhejiang University, Hangzhou 310058, P. R. China
- Ningbo Research Institute, Zhejiang University, Ningbo 315100, P. R.China
- Zhejiang University Zhongyuan Institute, Zhengzhou 450000, P. R. China
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