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Han Z, Ren W, Liu X, Lin N, Qu J, Duan X, Liu B. Hypoglycemic activity of immature persimmon (Diospyros kaki Thunb.) extracts and its inhibition mechanism for α-amylase and α-glucosidase. Int J Biol Macromol 2024; 257:128616. [PMID: 38070815 DOI: 10.1016/j.ijbiomac.2023.128616] [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: 08/31/2023] [Revised: 11/30/2023] [Accepted: 12/02/2023] [Indexed: 01/27/2024]
Abstract
Persimmon tannins, particularly in immature persimmons, haven't yet received corresponding attention to research on therapy of diabetes mellitus in spite of high hypoglycemic activity. To accurately screening key hypoglycemic components, immature persimmon extracts were isolated and identified using enzyme affinity ultrafiltration and HRLC-ESI-MS/MS. Among them, Hederagenin (IC50 = 0.077 ± 0.003 mg/mL), Ursolic acid (IC50 = 0.001 ± 0.000 mg/mL) and Quercetin dehydrate (IC50 = 0.081 ± 0.001 mg/mL) exhibited the strongest inhibitory effect on α-amylase (HSA and PPA) and α-glucosidase, respectively. And their inhibition mechanisms were analyzed using multi-spectral analysis, atomic force microscope and molecular docking, indicating the bonding with starch digestion enzymes through hydrogen bonding and hydrophobic interaction, and generating the enzyme aggregation. In vivo starch-tolerance experiment further verified that these inhibitors could improve postprandial hyperglycemia (17.18 % ∼ 40.29 %), far more than acarbose. Suppressing, Hederagenin and Ursolic acid as triterpenoids appeared amazing potentiality to alleviate postprandial hyperglycemia, which suggested that IPE were comprehensive exploration values on prevention and treatment of hyperglycemia.
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Affiliation(s)
- Zixuan Han
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, PR China; Fuping Modern Agriculture Comprehensive Demonstration Station, Northwest A&F University, Fuping, Shaanxi 711799, PR China
| | - Weiwei Ren
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Xiaojuan Liu
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, PR China; Fuping Modern Agriculture Comprehensive Demonstration Station, Northwest A&F University, Fuping, Shaanxi 711799, PR China
| | - Nan Lin
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, PR China; Fuping Modern Agriculture Comprehensive Demonstration Station, Northwest A&F University, Fuping, Shaanxi 711799, PR China
| | - Jialin Qu
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, PR China; Fuping Modern Agriculture Comprehensive Demonstration Station, Northwest A&F University, Fuping, Shaanxi 711799, PR China
| | - Xuchang Duan
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, PR China; Fuping Modern Agriculture Comprehensive Demonstration Station, Northwest A&F University, Fuping, Shaanxi 711799, PR China.
| | - Bin Liu
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, PR China; Fuping Modern Agriculture Comprehensive Demonstration Station, Northwest A&F University, Fuping, Shaanxi 711799, PR China.
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