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《Journal of Zhejiang Agricultural University》 1996-04
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Study on flavonoid content in mulberry leaves

Tang Mengcheng 1;Jia Zhishen 1;Zhu Xiangrui 2;Lü Shunlin 2(1 Dept.of Basic Course,Zhejiang Agricultural University,Hangzhou 310029,China;2 Dept.of Sericultural Sic.,Zhejiang Agricultural University,Hangzhou 310029,China)  
Flavonoid content in mulberry leaves from 20 species is deteminded by spectrophotometic method using rutin as standard sample.Flavonoid content in spring leaves varies from 11.71 to 26.61 mg/g according to species and from 9.84 to 29.60 mg/g in autumn leaves.The flavonoid extract rate with three different sample pretreatments is stuied.The fresh leaves have the highest flavonoid content.Flavonoid extract rate is over 95% using hot water and 30% alcohol as solvent respectively.Flavonoid ingredients are distinguished and detemined with HPLC.The results show that mulberry leaves contain four flavonoids,two of which are rutin and quercetin.
【Fund】: 浙江省教委科研基金
【CateGory Index】: S888.2
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