Extraction, characterization, and bioactivity of soluble dietary fiber from Physalis alkekengi L. calyx

文献类型： 外文期刊

第一作者： Wang, Jiaming

作者： Wang, Jiaming;Liang, Bin;Li, Zhentao;Wu, Xinru;Wang, Zifei;Yu, Te;Wu, Qiong;Gao, Yang;Dai, Yonggang

作者机构：

关键词： Physalis alkekengi L. calyx; Soluble dietary fiber; Ultrasonic assisted enzymatic method; Characterization; Bioactivity

期刊名称：JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION （ 影响因子：3.3； 五年影响因子：3.5 ）

ISSN： 2193-4126

年卷期： 2024 年 18 卷 12 期

页码：

收录情况： SCI

摘要： Physalis alkekengi L. is one of the most popular berries in the world, and its calyx is rich in nutrients. Still, the study of soluble dietary fiber (SDF) from Physalis alkekengi L. calyx (PC) has not been reported. This study aimed to extract Physalis alkekengi L. calyx soluble dietary fiber (PCSDF), and the optimal extraction process was investigated using response surface methodology. After ultrasonic pretreatment, the yield of PCSDF reached 8.74 +/- 0.17% under the conditions of liquid-solid ratio of 30 mL/g, thermostable alpha-amylase concentration of 2000 U/mL, dispase concentration of 20,000 U/mL, amyloglucosidase concentration of 40,000 U/mL. For the first time, PCSDF was characterized by UV spectroscopy, infrared spectroscopy, scanning electron microscopy and thermogravimetric analysis, and the composition of the monosaccharides, namely mannose, glucuronic acid, rhamnose, galacturonic acid, glucose, galactose, xylose, arabinose and fucose, was identified by HPLC. For antioxidant activity, the half inhibitory concentration (IC50) against DPPH, ABTS+, OH, and O2-radicals were 3.67, 2.96, 5.45, and 2.90 mg/mL, respectively, and there was a specific Fe3+ reducing capacity. In terms of hypoglycemic feature, the IC50 values for the inhibitory ability of alpha-glucosidase and alpha-amylase were 1.20 and 9.21 mg/mL, respectively. For lipid-lowering potential, the IC50 value for pancreatic lipase inhibitory ability for lipid-lowering was 16.95 mg/mL. This paper fills the research gap of PCSDF and provides a basis for further evaluation of PCSDF using in vivo studies.

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