对谷维素片含量测定的紫外分光光度法进行改进:采用无水乙醇为溶剂,超声溶解,在327 nm波长处测定吸光度.谷维素质量浓度与吸光度在6～24 μg· mL-1范围内线性关系良好,平均回收率为100.3％,RSD=1.2％.超声法与标准法比较,谷维素溶解更完全,测定结果更稳定确切.%This paper optimized the UV method of oryzanol content determination. The modification included the use of absolute ethyl alcohol as solvent and ultrasonic vibration when samples were dissolved, and the wavelength was at 327 nm. A good linear relationship from 6 μg·mL-1 to 24 μg·ml-1, a recovery of 100.3% and RSD of 1.2% were obtained. Compared with the standard method, the ultrasonic method made oryzanol dissolved completely and the measurement results more stable.
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