Identification of Acacia Honey Adulteration with Rape Honey Using Liquid Chromatography-Electrochemical Detection and Chemometrics

文献类型： 外文期刊

第一作者： Wang, Jinmei

作者： Wang, Jinmei;Chen, Lanzhen;Cao, Wei;Wang, Jinmei;Du, Xiaojing;Cheng, Ni;Zheng, Jianbin;Cao, Wei;Xue, Xiaofeng;Chen, Lanzhen;Zhao, Jing

作者机构：

关键词： Honey;Phenolic acids;Adulteration;LC-ECD;Chemometrics

期刊名称：FOOD ANALYTICAL METHODS （ 影响因子：3.366； 五年影响因子：3.07 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： The adulteration of honey is generally a concern of consumers and management departments of safety and quality. Adding low-price honey to high-price honey is often seen in the market. In this study, a reliable and simple method of liquid chromatography-electrochemical detection (LC-ECD) was presented to detect the adulteration of acacia honey which was added with rape honey at different levels (5-50 %, w/w). Chromatographic separation was carried out with a reversed phase column, and the mobile phase was methanol/2 % (v/v) aqueous acetic acid. Fingerprints of authentic honeys showed that the contents of chlorogenic acid were higher in acacia honey (1.738 mg kg(-1)), while those of ellagic acid were much lower (0.274 mg kg(-1)) in rape honey, so the chlorogenic acid and ellagic acid could be considered as possible markers of acacia and rape honeys, respectively. Samples were classified by cluster analysis and principal component analysis (PCA) according to the contents of phenolic acids. The results of PCA showed that chlorogenic acid and ellagic acid were the major variables, and no adulterated sample was identified as authentic honey. The results of cluster analysis (CA) indicated that the samples were appropriately divided into three main clusters, and adulterated samples were identified. Therefore, acacia honey adulteration with rape honey could be undoubtedly detected by LC-ECD combined with chemometric methods down to the level of 5 %.

分类号： TS2

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