桂花种子皮黑色素的提取及其抗氧化活性研究  

Study on extraction technology of melanin from osmanthus fragrans' seeds and its antioxidant activity

作　　者：王恒山[1] 潘英明[1] 李海云[2] 唐莅东[1] 唐旭杰[1] 黄志清[1] 

机构地区：[1]广西师范大学化学化工学院,广西桂林541004 [2]桂林工学院材料与化学工程系,广西桂林541004

出　　处：《云南大学学报（自然科学版）》2004年第S2期55-57,共3页Journal of Yunnan University(Natural Sciences Edition)

基　　金：广西青年基金(桂青科0229023)广西区教育厅基金项目

摘　　要：采用碱性溶液提取、酸水解、多种有机溶剂萃取沉淀等工艺手段分离纯化了桂花种子皮黑色素,其得率为0.34%(以湿原料为准).测定了该色素的抗氧化活性,抗坏血酸为0.25g/g(1.42mmol/g).The extraction technology of melanin from Osmanthus fragrans' seeds was studied. Melanin was isolated from Osmanthus fragrans' seeds by alkaline extraction, acid hydrolysis, and repeated precipitation with a yield 0.34% (wet material). The antioxidant activity of the melanin was determined, and it was 0.25 g/g(or 1.42 mmol/g).

关 键 词：桂花种子皮 天然黑色素 抗氧化活性 

分 类 号：TQ464[化学工程—制药化工]