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Individual iso-α-acids that are responsible for the bitter taste of beer need to be isolated because these acids are required as reference standards in quantitative analysis and when studying the parameters which effect the quality of beer. However, these pure compounds are very expensive, due to inefficient isolation methods. In this study a new isolation method has been developed, in order to reduce...
In the final step of the biosynthesis of hop bitter acids an oxidation leads to the formation of α-acids. A method was set up to analyse the bitter acids in the presence of proteins, since proteins from a crude hop extract were found to interact with the phenolic bitter acids and interfere with the extraction and assay of these acids. After examination of the interaction of bovine serum albumin...
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