期刊
FOOD CHEMISTRY
卷 288, 期 -, 页码 96-101出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2019.02.062
关键词
Honey markers; NMR; Metabolomics; Acacia honey; Melissopalynological analysis; Botanical and geographical origins; EU acacia honey blends
A geographical discrimination of honey is an important prerequisite for quality and authenticity control. Here, we present a method based on an NMR-metabolomic analysis of organic extracts for a geographical discrimination of commercial European acacia honeys found on the Italian market. All 234 analysed samples show the characteristic H-1 NMR profile of acacia (Robinia pseudoacacia) honey. However, a PLS2-DA model revealed variations among production zones allowing the successful geographical differentiation with a 100% of overall correct classification rate. Moreover, a PLS2 model is able to predict the proportions in binary blends of Italian and Eastern European acacia honeys. The geographical distinction and the possibility to characterize the content of blends derive from different markers content originating from minor nectar contributions of the acacia-accompanying flora.
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