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).
出处
《云南大学学报(自然科学版)》
CAS
CSCD
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
关键词
桂花种子皮
天然黑色素
抗氧化活性
Osmanthus fragrans' seeds
natural melanin
antioxidant activity