食品工业科技2017，Vol.38Issue(10)：286-290,5.DOI:10.13386/j.issn1002-0306.2017.10.046
亚临界水提取红心火龙果茎多糖及其抗氧化活性
Study on the extraction and antioxidant activity of polysaccharide from red pulp Hylocereus undatus stem by subcritical water
摘要
Abstract
The extraction condition of polysaccharide from red pulp Hylocereus undatus stem (PPL)by subcritical water was optimized using the single factor and orthogonal experiment.Determination of antioxidant activity and composition of polysaccharide were studied to determine the biological activity of red pulp Hylocereus undatus stem and evaluate its vitro antioxidant activity,so that we can provide theoretical basis for the rational development and application of red pulp Hylocereus undatus stem polysaccharide.The results showed that the optimal extraction conditions were that the extraction temperature was 140 ℃,the time was 25 min and the solid-liquid ratio was 1∶50,and the extraction rate of PPL was up to 38.07％ ± 0.15％.The study on antioxidant revealed that the PPL had certain antioxidant activity and the maximum scavenging rate on hydroxyl radical and DPPH radical were 40.09％ and 95.15％,respectively.Ultraviolet and infrared spectrum analysis showed that PPL had the typical polysaccharide IR absorption.关键词
红心火龙果茎/多糖/亚临界水/抗氧化Key words
red pulp Hylocereus undatus stem/polysaccharide/subcritical water/antioxidant分类
轻工纺织引用本文复制引用
马若影,杨慧强,李国胜,邓志勇,曹君,李幼梅,白新鹏..亚临界水提取红心火龙果茎多糖及其抗氧化活性[J].食品工业科技,2017,38(10):286-290,5.基金项目
海南省自然科学基金(20153159) （20153159）
海南省自然科学基金(314075) （314075）
校企合作项目:火龙果综合加工研究 （）
2016年海南省普通高校研究生创新科研课题(Hys2016-45) （Hys2016-45）
