Research Progress on Geographical Origin Traceability of Coffee Beans
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Abstract:
Due to the relatively high economic value of coffee beans in the origin and their shortage of supply in the consumer market, coffee bean origin fraud is becoming more severe. Therefore, it is urgent to develop technologies and methods that can accurately trace the geographical origin of coffee beans. This review introduces the main origins of coffee beans in the world and analyzes 79 domestic and international research papers related to the geographical origin of coffee beans, and compares the advantages and disadvantages of metabolomics, multi-element fingerprinting, stable isotopes, terahertz magnetic spectroscopy and infrared spectroscopy combined with chemometric methods in the applications of tracing the origin of coffee beans. It was found that the combination of light stable isotopes with multi-element fingerprints can effectively trace the geographical origin of coffee beans. This method has high stability and accuracy, and requires relatively low cost for traceability. On this basis, the focus and development direction for the combined use of light stable isotope technique and multi-element fingerprints in the research field of coffee bean origin are prospected.
