[Analysis Case] Quantitative Analysis of Free Amino Acids in Alcoholic Beverages
Quantitative analysis of 17 free amino acids is possible using the OPA post-column method.
This document presents a case study of the quantitative analysis of free amino acids contained in alcoholic beverages using the OPA post-column method. It was found that sake, a brewed alcoholic beverage, contains a rich and well-balanced variety of free amino acids, including alanine and arginine. Furthermore, when comparing three sake products, differences were observed in both the content and balance of free amino acids. Although draft beer is also a brewed beverage like sake, it showed a lower content of free amino acids compared to sake. On the other hand, distilled spirits such as whiskey and awamori contained almost none.
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It is a quantitative analysis of amino acids.
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