Ultrasound-Assisted Extraction, Preliminary Characterization, and Antioxidant Activity of a Novel Water-Soluble Polysaccharide from Lotus (Nelumbo nucifera Gaertn.) Seeds
作者： Yafeng Zheng , Baodong Zheng , Yuting Tian , Chan Chen
DOI: 10.1080/01496395.2012.665118
关键词:
摘要: Ultrasound-assisted extraction was employed to extract polysaccharides from lotus (Nelumbo nucifera Gaertn.) seeds. Response Surface Methodology used determine the optimal conditions of ultrasound power, time, and temperature at 406 W, 7.7 min, 94°C, respectively. The crude successively purified by chromatography, yielding a major polysaccharide fraction termed LSPS-1. It is heteropolysaccharide, containing rhamnose, arabinose, glucose, galactose with molecular weight 4484 Da an α-dominating configuration in pyranose form sugar. Preliminary antioxidant activity test vitro showed LSPS-1 could potentialize scavenging effect on hydroxyl radicals dose dependent manner.
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