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  • Title: Simultaneous Determination of 11 Components in Yinzhihuang Preparations and Their Constituent Herbs by High-Performance Liquid Chromatography with Diode Array Detector.
    Author: Du Y, Han J, Sun SA, Li Z, Yang FX, Dong LL, Yang DZ, Tang DQ.
    Journal: J Chromatogr Sci; 2016 Apr; 54(4):625-32. PubMed ID: 26809640.
    Abstract:
    A simple and sensitive liquid chromatography method with diode array detector was established for simultaneous determination of 11 components (geniposidic acid, chlorogenic acid, caffeic acid, geniposide, luteoloside, isochlorogenic acid C, baicalin, luteolin, wogonoside, baicalein and wogonin) in various commercial Yinzhihuang preparations and their herbs by optimizing the extraction, separation and analytical conditions. Eleven components were identified on the basis of their retention times and mass spectra. Chromatographic separation was performed on a C18 analytical column with a gradient elution of acetonitrile and 0.1% formic acid water solution at a flow rate of 1.0 mL/min. The linearity, precision and accuracy of the data obtained were acceptable. The method was used to analyze four Yinzhihuang preparations (powder, capsule, oral liquid and injection) and related herbs (Radix Scutellariae, Flos Lonicerae, Herba Artemisiae Scopariae and Fructus gardeniae). Results suggested that the optimized method could be considered as a good approach to control the quality of Yinzhihuang preparations and their herbs.
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