Tang Wenwen, Zhang Xinyang, He You, Jin Xiaojun
College of Agriculture, Gansu Agricultural University, Lanzhou 730070, China.
Zhongguo Zhong Yao Za Zhi. 2011 Apr;36(8):955-8.
Different harvest times of Isatidis Folium had a significant effect on the yield and the quality of Isatidis Radix and Isatidis Folium. The harvest could increase the yield of Isatidis Folium, but reduce the yield of Isatidis Radix, the quality of Isatidis Radix and Isatidis Folium. One, two and three harvests of the Isatidis Folium reduced the yield of Isatidis Radix as 18.3%, 58.6%, 67.4% and increased the yield of the Folium as 107.3%, 86.3% and 116.6%. Ethanol-soluble extract of Isatidis Radix was 42.50%, 42.24%, 31.77%, which were 1.19%, 1.79%, 26.13% lower than those of the control, respectively. The water-soluble extract, indirubin, indigo content reduced with increase of the harvest times. Indirubin contents with two or three times harvests were higher than that of the control, but the content of water-soluble extract, ethanol-soluble extract, indigo were lower than those of the control.
不同采收期的大青叶对板蓝根和大青叶的产量及质量有显著影响。采收会增加大青叶的产量，但会降低板蓝根的产量、板蓝根和大青叶的质量。大青叶采收1次、2次和3次，板蓝根产量分别降低18.3%、58.6%、67.4%，大青叶产量分别增加107.3%、86.3%和116.6%。板蓝根乙醇提取物含量分别为42.50%、42.24%、31.77%，分别比对照低1.19%、1.79%、26.13%。水溶性提取物、靛玉红、靛蓝含量随采收次数增加而降低。采收2次或3次的靛玉红含量高于对照，但水溶性提取物、乙醇提取物、靛蓝含量低于对照。
