Phenylethanoid Glycoside Profiles and Antioxidant Activities of Osmanthus fragrans Lour. Flowers by UPLC/PDA/MS and Simulated Digestion Model

Journal of Agricultural and Food Chemistry
Yirong JiangYajing Zhao

Abstract

Variations of phenylethanoid glycoside profiles and antioxidant activities in Osmanthus fragrans flowers through the digestive tract were evaluated by a simulated digestion model and UPLC/PDA/MS. Major phenylethanoid glycosides and phenolic acids, namely, salidroside, acteoside, isoacteoside, chlorogenic acid, and caffeic acid, were identified in four cultivars of O. fragrans flowers, and the concentration of acteoside was the highest, being up to 71.79 mg/g dry weight. After simulated digestion, total phenylethanoid glycoside contents and antioxidant activities were significantly decreased. Acteoside was identified as decomposing into caffeic acid, whereas salidroside was found to be stable during simulated digestion. According to Pearson's correlation analysis, acteoside contents showed good correlations with antioxidant activities during simulated digestion (R(2) = 0.994, P < 0.01). In conclusion, acteoside was the major contributor to the antioxidant activity of O. fragrans flowers, and salidroside was considered as the major antioxidant compound of O. fragrans flowers in vivo.

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Citations

Apr 18, 2019·Journal of Cellular and Molecular Medicine·Xinzhong HuangCheng Sun
Aug 12, 2020·Medicinal Research Reviews·Lipeng WuBaiyi Lu
Jun 8, 2021·Critical Reviews in Food Science and Nutrition·Sajad FakhriHaroon Khan
Dec 12, 2017·Journal of Agricultural and Food Chemistry·Xiaoyan LiaoZilin Chen

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