Ultrasound-assisted extraction and antioxidant activity of polysaccharides from Acanthus ilicifolius

文献类型： 外文期刊

第一作者： Mtetwa, Michelle Dorcas

作者： Mtetwa, Michelle Dorcas;Qian, LiSun;Zhu, HongAn;Cui, FengJie;Zan, XinYi;Sun, WenJing;Wu, Di;Yang, Yan;Cui, FengJie;Sun, WenJing

作者机构：

关键词： Acanthus ilicifolius; Polysaccharide; Ultrasound-assisted extraction; Structural characterization; Antioxidant activity

期刊名称：JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION （ 影响因子：2.431； 五年影响因子：2.347 ）

ISSN： 2193-4126

年卷期： 2020 年 14 卷 3 期

页码：

收录情况： SCI

摘要： In the present study, ultrasound-assisted extraction of water-soluble polysaccharides from the Acanthus ilicifolius was optimized by using one-factor-at-a-time and Box-Behnken designs. A maximum polysaccharide yield of 2.46% was obtained under the optimized conditions of ultrasonic power of 150 W, temperature of 53 degrees C, extraction time of 50 min, and liquid to solid ratio of 35 mL/g. Results of UV, FTIR and molecular weights indicated that there were significant differences in structures of polysaccharides extracted with ultrasound assistance (UAE-ACI) and hot-water extraction (HWE-ACI) including monosaccharide compositions and ratios, and molecular weight distributions. Further analysis showed that UAE-ACI had a higher antioxidant activity in vitro than that of HWE-ACI possibly due to lower molecular weight and higher content of phenolics and protein fractions.

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