alexa DNA extraction and analysis from processed coffee beans.
General Science

General Science

Journal of Forensic Research

Author(s): Martellossi C, Taylor EJ, Lee D, Graziosi G, Donini P

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Abstract The authenticity of coffee is an important issue for both producers and consumers. Premium Arabica material is especially prone to being adulterated, and a number of different techniques have been employed to determine the quality of both roasted and instant coffee. Currently, assessment of coffee authenticity relies on chemical methods which can discriminate between coffee species, but not varieties. Several genetic markers are available for assessing coffee origin, but their suitability to testing commercial coffee is limited by the ability to extract DNA from highly processed beans. In this paper, we demonstrate that PCR-grade DNA may be obtained from roasted beans and even instant coffee. This would allow analysis of commercial samples, provided that suitable markers for species/variety identification are found. This article was published in J Agric Food Chem and referenced in Journal of Forensic Research

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