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首页> 外文期刊>Journal of Agricultural and Food Chemistry >Analysis of volatile compounds as spoilage indicators in fresh king salmon (Oncorhynchus tshawytscha) during storage using SPME-GC-MS
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Analysis of volatile compounds as spoilage indicators in fresh king salmon (Oncorhynchus tshawytscha) during storage using SPME-GC-MS

机译：使用SPME-GC-MS分析新鲜帝王鲑（Oncorhynchus tshawytscha）储存过程中的挥发性化合物作为腐败指标

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摘要

A method was developed for the analysis of salmon volatiles using solid-phase microextraction and gas chromatography-mass spectrometry. This method was used to monitor the volatiles of fresh king salmon ( Oncorhynchus tshawytscha) stored in ambient air or in a 40: 60 ( v/v) mixture of CO2: N-2 over time. The levels of several of the volatile compounds were found to change during storage, with some showing a clear difference between storage in air and storage in CO2: N2. Of these, several alcohols ( cyclopentanol, Z-2-penten-1-ol, 1-penten-3-ol, and 1-octen-3-ol) and aldehydes ( hexanal, octanal, E-2-pentenal, and E-2-hexenal) were identified as potential markers for salmon freshness. Several other volatiles ( acetoin, ethyl benzene, propyl benzene, styrene, 3-methyl butanoic acid, and acetic acid) were identified as potential markers for salmon spoilage. A comparison of salmon harvested with and without the "rested harvesting" technique showed that E- and Z-isoeugenol levels were increased by the use of the isoeugenol based anesthetic. The use of the anesthetic did not affect the levels of any of the other compounds identified.
机译：开发了一种使用固相微萃取和气相色谱-质谱法分析鲑鱼挥发物的方法。该方法用于监测存储在环境空气中或40:60（v / v）CO2：N-2混合物随时间推移的新鲜国王鲑（Oncorhynchus tshawytscha）的挥发物。发现几种挥发性化合物的含量在储存过程中会发生变化，其中一些显示出在空气中储存与在CO2：N2中储存之间的明显差异。其中，几种醇（环戊醇，Z-2-戊烯-1-醇，1-戊烯-3-醇和1-辛烯-3-醇）和醛（己醛，辛醛，E-2-戊烯和E -2-己烯醛被确定为鲑鱼新鲜度的潜在标志。几种其他挥发物（乙醛，乙苯，丙苯，苯乙烯，3-甲基丁酸和乙酸）被确定为鲑鱼变质的潜在标志。比较采用和不采用“静止收获”技术收获的鲑鱼，结果表明，使用基于异丁香酚的麻醉剂可提高E-和Z-异丁香酚的含量。麻醉剂的使用不会影响所鉴定的任何其他化合物的水平。

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