[Influence of drying method on content of epigoitrin and uridine in isatidis radix].

Zhong yao cai = Zhongyaocai = Journal of Chinese medicinal materials

PubMedID: 25345127

Tan MM, Huang Y, Xu XF, Zhang ZN, Deng QH. [Influence of drying method on content of epigoitrin and uridine in isatidis radix]. Zhong Yao Cai. 2014;37(4):578-80.
OBJECTIVE
To study the influence of different drying methods on the content of epigoitrin and uridine in Isatidis Radix.

METHODS
Fresh Isatidis Radix was processed by four drying methods including airing drying and drying in far infrared oven at different temperature,drying in the sun and drying in the shade. The contents of epigoitrin and uridine were determined by HPLC.

RESULTS
The contents of epigoitrin as well as uridine in samples valued from 3.847 - 5.204 mg/g and 0.701 - 1.028 mg/g, respectively.

CONCLUSION
The optimal drying method is airing drying at 55 degrees C, which will be serviced in the large-scale processing of Isatidis Radix.