摘要
目的:从榴莲壳内皮中提取果胶多糖和黄酮,并评价果胶多糖和黄酮对重金属的吸附作用。方法:以榴莲壳内皮为原料,采取水提乙醇沉淀法从榴莲壳内皮中提取高酯果胶及黄酮,采用碱化法将高酯果胶转化为低酯果胶,并用原子吸收光谱法测定高酯果胶、低酯果胶及黄酮对重金属的吸附率,从而评价其吸附能力。结果:在模拟胃液及肠液条件下,高酯果胶、低酯果胶和黄酮对铅的吸附能力:高酯果胶>低酯果胶>黄酮,对镉的吸附能力:低酯果胶>高酯果胶>黄酮;对钙、铁及锌离子均无吸附能力。结论:榴莲壳内皮中提取物果胶及黄酮对重金属元素有一定的选择性吸附作用,具有进一步研究和开发价值。
Objective：Study on pectin polysaccharides and flavonoids from durian inner shell and the adsorption capacity of the heavy metal. Methods：The durian inner shell as raw materials to ethanol precipitation,water extraction were directly extracted,high ester pectin and flavonoids,using alkaline method into the high-ester pectin with low ester pectin,to evaluate their adsorption capacity by atomic absorption spectrometry. Results：In simulated gastric and intestinal fluid conditions,the high ester pectin,low ester pectin and flavonoids adsorption capacity of Pb2＋：high ester pectinlow ester pectinflavonoids,the adsorption capacity of Cd2＋：low ester pectinhigh ester pectinflavonoids. There was no significant influence on Fe2＋,Zn2＋,Ca2＋ absorption. Conclusion：The pectin and flavonoids extraction from durian inner shell had a certain heavy metal adsorption capacity,with research and development value.
出处
《食品工业科技》
CAS
CSCD
北大核心
2011年第12期129-131,135,共4页
Science and Technology of Food Industry
关键词
榴莲壳内皮
果胶多糖
黄酮
吸附作用
durian inner shell
pectin polysaccharides
flavonoids
adsorption capacity
