Zhang J X, Wang Y
Institute of Chinese Materia Medica, China Academy of Traditional Chinese Medicine, Beijing.
Zhongguo Zhong Yao Za Zhi. 1993 Feb;18(2):77-8, 124.
In this paper, a chromometer was used to measure the color of Flos Sophorae and a chromaticity chart was drawn up. Using the rutin content as the criterion, it is concluded that Flos Sophorae having a yellowish green color has the best quality.
