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首页> 外文期刊>African Journal of Biotechnology >Characterisation of selected volatile organic compounds in Rwandan indigenous beer Urwagwa by dynamic headspace gas chromatography-mass spectrometry
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Characterisation of selected volatile organic compounds in Rwandan indigenous beer Urwagwa by dynamic headspace gas chromatography-mass spectrometry

机译：动态顶空气相色谱-质谱法表征卢旺达本地啤酒Urwagwa中选定的挥发性有机化合物

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摘要

The volatile organic compound profile of alcoholic beverages consists of a wide range of compounds, comprising of acids, alcohols, esters, aldehydes, and other trace level aroma compounds. These compounds play an important role as they provide relative information on the product quality and enhance product acceptability. In this study, two brands of commercially available traditional banana beer samples were collected from a local market in Kigali, Rwanda; and were analyzed for volatile organic compounds. Dynamic headspace, using gas chromatography-mass spectrometry (DHS/GC-MS), was used to identify volatile compounds at three different temperatures. Fifty volatile compounds, inclusive of 14 acids, 14 alcohols, and 22 esters were identified and quantified in the two brands of indigenous banana beer samples. Only 12 volatile components (three alcohols, three acids and six esters) were common in all banana beer samples. Among all the identified compounds, ethanol and ethyl acetate were the dominant compounds in all beer samples. Ethanol levels were found to be 8.7 and 18.1% (v/v) for brand A and B, respectively using gas chromatography (GC). The two major toxic compounds, methyl alcohol and ethyl carbamate/urethane, were detected in lower concentration levels compared to other identified compounds, thus suggesting negligible risk.
机译：酒精饮料的挥发性有机化合物组成由多种化合物组成，包括酸，醇，酯，醛和其他痕量香气化合物。这些化合物起重要作用，因为它们提供了有关产品质量的相关信息并增强了产品的可接受性。在这项研究中，从卢旺达基加利的一个当地市场收集了两个品牌的可商购的传统香蕉啤酒样品。并分析了挥发性有机化合物。使用气相色谱-质谱法（DHS / GC-MS）进行动态顶空，以鉴定三种不同温度下的挥发性化合物。在两个品牌的本地香蕉啤酒样品中鉴定并定量了50种挥发性化合物，包括14种酸，14种醇和22种酯。在所有香蕉啤酒样品中，只有12种挥发性成分（三种醇，三种酸和六种酯）是常见的。在所有鉴定出的化合物中，乙醇和乙酸乙酯是所有啤酒样品中的主要化合物。使用气相色谱仪（GC），品牌A和B的乙醇含量分别为8.7％和18.1％（v / v）。与其他鉴定出的化合物相比，检测到的两种主要有毒化合物甲醇和氨基甲酸乙酯/氨基甲酸酯的浓度较低，因此风险可忽略不计。

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