云南民族大学学报（自然科学版）2025，Vol.34Issue(1)：20-26,7.DOI:10.3969/j.issn.1672-8513.2025.01.003
紫皮石斛和铁皮石斛中多糖提取工艺及抗氧化活性研究
Study on the extraction technology and antioxidant activity of polysaccharide from Dendrobium devonianum and Dendrobium officinale
摘要
Abstract
This research aims to study the effects of extracting time,extraction solution multiples and times in the water extraction method,as well as different extraction methods on different types of Dendrobium polysaccharides.The results showed that Dendrobium officinale grown in untreated artificial greenhouses has the highest polysaccha-ride concentration,followed by that of imitation wild Dendrobium officinale.Under the same conditions,after deproteinization using Sevag reagent,the concentration of polysaccharides in the three types of Dendrobium decreased significantly.Among them,the loss rate of imitation wild planting Dendrobium officinale is the largest,as high as 17.7%.In addition,the polysaccharides in Dendrobium devonianum and Dendrobium officinale have better scavenging effect on hydroxyl free radicals.The crude polysaccharide and its purified polysaccharide have better effect on free radicals and DPPH free radicals also have a certain scavenging ability.Different Dendrobium species and planting methods lead to differences in the mass concentration and activity of crude polysaccharides and purified polysaccharides among the three dendrobium samples.关键词
铁皮石斛/紫皮石斛/粗多糖/抗氧化活性Key words
Dendrobium officinale/Dendrobium devonianum/crude polysaccharide/antioxidant activity分类
农业科技引用本文复制引用
石雪,唐明华..紫皮石斛和铁皮石斛中多糖提取工艺及抗氧化活性研究[J].云南民族大学学报（自然科学版）,2025,34(1):20-26,7.基金项目
创新引导与科技型企业培育计划(202004BK091382). （202004BK091382）
