Identification of novel malodour compounds in laundry
Identification of novel malodour compounds in laundry
复制标题
DOI：
10.1002/ffj.2088
复制
发表时间：
2012-01-01
影响因子：
2.6
通讯作者：
Kashiwagi, Mitsuyoshi
中科院分区：
文献类型：
--
作者：
Takeuchi, Kohei;Hasegawa, Yoshihiro;Kashiwagi, Mitsuyoshi
我们调查了日常使用的衣服上的恶臭化合物，并首次确定了造成恶臭的中链脂肪酸，这种恶臭通常被描述为潮湿和肮脏的灰尘布状。应用制备级分收集器和气相色谱-质谱法的酸性挥发性馏分仔细分离用过的衣服揭示了新确定的气味负责令人不快的气味。特别是具有潮湿肮脏抹布般气味的4-甲基-3-己烯酸（4 M3 H）的嗅觉阈值在检测到的脂肪酸中最低。虽然4 M3 H在测试的衣服中以痕量存在（高达5 μ g/50 g布），但芳香提取物稀释分析显示，它对衣服上的恶臭的总体强度贡献最大。此外，对衣服中检测到的脂肪酸的定量分析揭示了几种脂肪酸浓度（它们在衣服中的量）的对数与整体气味强度之间的相关性。特别是4 M3 H显示出高相关值（r=0.72，p
We investigated malodorous compounds on clothes in daily use and identified, for the first time, middle-chain fatty acids responsible for the malodour often described as wet and dirty dust-cloth-like. Application of a preparative fraction collector and gas chromatographymass spectrometry of the acidic volatile fraction carefully isolated from used clothes revealed the newly identified odorants responsible for unpleasant odours. In particular, the olfactory threshold of 4-methyl-3-hexenoic acid (4M3H), which has the wet and dirty dust-cloth-like odour, was found to be the lowest among the detected fatty acids. Although 4M3H was present in trace amounts in the clothes tested (up to 5 mu g/50 g cloth), an aroma extract dilution analysis revealed that it contributed the highest to the overall strength of malodour on them. In addition, quantitative analysis of the detected fatty acids in the clothes revealed a correlation between the logarithm of several fatty acid concentrations (their amount in the clothes) and the overall odour intensity. In particular, 4M3H showed a high correlation value (r=0.72, p