[논문]Toward understanding the in vitro anti-amylolytic effects of three structurally different phytosterols in an aqueous medium using multispectral and molecular docking studies

Sobhy, Remah; Eid, Mohamed; Zhan, Fuchao; Liang, Hongshan; Li, Bin

doi:10.1016/j.molliq.2019.03.098

[해외논문] Toward understanding the in vitro anti-amylolytic effects of three structurally different phytosterols in an aqueous medium using multispectral and molecular docking studies

Journal of molecular liquids, v.283, 2019년, pp.225 - 234

Sobhy, Remah (College of Food Science & Technology, Huazhong Agricultural University) , Eid, Mohamed (College of Food Science & Technology, Huazhong Agricultural University) , Zhan, Fuchao (College of Food Science & Technology, Huazhong Agricultural University) , Liang, Hongshan (College of Food Science & Technology, Huazhong Agricultural University) , Li, Bin (College of Food Science & Technology, Huazhong Agricultural University)

Abstract ▼ AI-Helper

Abstract Mitigation the activity of α-amylase and α-glucosidase is scientifically spotlighted to potentially decrease the glucose absorption and scavenge category 2-diabetes mellitus in the humans. For the first time, we elucidated the underlying mechanism of the inhibitory activity of 3 structurally different phytosterols (PS) on α-amylase and α-glucosidase using multispectral and molecular docking approaches. It was found that stigmasterol, β-sitosterol, and γ-oryzanol integratedly (competitive and uncompetitive) inhibited both of α-amylase and α-glucosidase. The spectrofluorometric results demonstrated that a static interaction of PS with both enzymes happened, leading to the changes in Z-average size, UV–vis spectrum, and secondary structures of these amylolytic enzymes. Moreover, each PS noncovalently interacted with several residues close to the active sites of both enzymes via H-bonding and π-π forces, causing indirectly inhibition to their catalytic activity. However, γ-oryzanol was highly inhibited both enzymes than the other PS since its structure in which contained ferulic acid esterified with sterol, which could be used as nutraceutical ingredients. Highlights The anti-amylolytic activity of 3 structurally different phytosterols were studied. Stigmasterol, β-sitosterol, and γ-oryzanol integratedly inhibited the amylolytic enzymes. PS noncovalently interacted with several residues close to the active sites of both enzymes. Phytosterols altered the secondary structures of α-amylase and α-glucosidase. γ-Oryzanol highly inhibited both enzymes since their unique structure. Graphical abstract [DISPLAY OMISSION]

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[해외논문] Toward understanding the in vitro anti-amylolytic effects of three structurally different phytosterols in an aqueous medium using multispectral and molecular docking studies

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