Abstract
Fructus Gardeniae, known as Zhi-zi in China, has been used as Chinese herbal medicine and functional health food for thousands of years. Fructus Gardeniae Grandiflorae, named as Shui-zhizi, is a counterfeit herb of Fructus Gardeniae. In order to discriminate these two varieties, based on ultra-high-performance liquid chromatography, an analysis method of fingerprints of Fructus Gardeniae and Fructus Gardeniae Grandiflorae was established. With hierarchical clustering analysis and principal component analysis, they were separated into two groups. Analyzed with partial least squares discriminant analysis, there were differences in chemical compositions between Fructus Gardeniae and Fructus Gardeniae Grandiflorae. Six compounds, crocin I, genipin-1-β-D-gentiobioside and four other unknown compositions were identified as differential marker compositions between them. Furthermore, seven active substances in them were determined simultaneously. Thus, an integral method of ultra-high-performance liquid chromatography fingerprint combined with chemometrics analysis and quantitative assessment was established. It could be utilized in characterization, quality evaluation of Fructus Gardeniae and could be applied for discriminating Fructus Gardeniae from Fructus Gardeniae Grandiflorae.
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