摘要
The contents of total flavonoids in leaves of Lycium barbarum L.at different picked times were determined by RP-HPLC.It was showed that thecontent of total flavonoids in leaveswas the highest(1.99%) in May and the second(1.36%) in August,and decreased sharply after September and went down to the lowest in October(0.36%).So the best picked time in Xi′ning City,Qinghai Province was early summer.Moreover,contents of three major aglycones,such as quercetin,kaempferol and isorhamntin,were compared.Consistently for all picked times,the content of quercetin was much higher than those of kaempferol and isorhamntin.
The contents of total flavonoids in leaves of Lycium barbarum L. at different picked times were determined by RP-HPLC. It was showed that the content of total flavonoids in leaves was the highest （ 1.99% ） in May and the second （ 1.36% ） in August, and decreased sharply after September and went down to the lowest in October （0. 36% ）. So the best picked time in Xi＇ning City, Qinghai Province was early summer. Moreover, contents of three major aglycones, such as quercetin, kaempferol and isorhamntin, were compared. Consistently for all picked times, the content of quercetin was much higher than those of kaempferol and isorhamntin.
出处
《植物资源与环境学报》
CAS
CSCD
2006年第3期75-76,共2页
Journal of Plant Resources and Environment
基金
中国科学院知识创新领域前沿资助项目(编号:CXLY-2002-9)
关键词
宁夏枸杞叶
总黄酮
含量测定
采收期
leaves of Lycium barbarum L.
total flavonoids
content determination
picked time
