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枇杷膏是我公司出口日本产品,主要由枇杷叶、桔梗、橘红等中药精制而成。鉴于出口产品对苯甲酸用量有严格要求,我们查阅了有关资料,均未见中药制剂中苯甲酸含量测定方法的报道,因此,我们建立了本品中苯甲酸的HPLC测定法,该法简便、准确。1 仪器与试剂 日本岛津LC-10A高效液相色谱仪,7530G分光光度计(上海分析仪器厂),苯甲酸对照品由广州越健医化公司提供(酸碱滴定法测定含
Ointment is my company’s export of Japanese products, which are mainly made from Chinese herbal medicines such as cilantro, campanulaceae, and orange. In view of the strict requirements on the amount of benzoic acid used in the export products, we have consulted relevant data and have not reported any method for determining the content of benzoic acid in Chinese medicine preparations. Therefore, we have established an HPLC assay for benzoic acid in this product. This method is simple, accurate. 1 Instruments and reagents Japan Shimadzu LC-10A high-performance liquid chromatograph, 7530G spectrophotometer (Shanghai Analytical Instrument Factory), benzoic acid reference substance provided by Guangzhou Yuejian Medical Chemicals (acid-base titration assay