ABSTRACT
Objective: To compare the differences of contents of effective components triolein and coixol in Coix lacryma-jobi var. mayuen from different origins. Methods: The Discover C18 column was used for the detection of triolein with mobile phase of acetonitrile-dichloromethanol (66:34). The flow rate of mobile phase was 0.7 mL/min. The column temperature was controlled at 30℃. The ELSD was used. The tube temperature was 45℃, and the flow rate of nitrogen was 1.5 L/min. The Agilent Zorbax SB-C18 column was used for the detection of the coixol with the mobile phase of acetonitrile-water (25:75), a flow rate of 1 mL/min, a temperature of 25℃ and a wavelength of 232 nm. Results: The triolein content of Zhejiang province was the highest, at 1.04%, and the lowest was in Hainan Province, which was 0.53%; The highest coixol content was in Shanghai, reaching 3.469 7 mg/g, but the lowest content was only 0.619 3 mg/g in Anhui province. Conclusion: The contents of triolein and coixol in adlay from eight Provinces are significantly different, the contents of triolein and coixol in adlay from Zhejiang and Fujian Provinces were relatively high, and medicinal material quality is better.