Abstract：
More than 40 volatile compounds were detected in sea cucumber powder during the processing (through freeze-dried, desalination, supercritical fluid extraction and ultra-micro grinding) by multiple methods including e-nose, GC-IMS and GC-MS. It has been determined that aldehydes are the predominant volatile substances in the original freeze-dried sample, accounting for about 30 % of the total volatile substances. In addition, we established a supercritical fluid extraction strategy that could efficiently remove the aldehydes from the sea cucumber powder. GC-IMS and GC-MS showed that the relative content of aldehydes significantly decreased by 14 % and 28 %, respectively. Quantification of aldehydes using GC-MS showed a significant decrease in octanal from 927 µg/kg to 159 µg/kg. Further investigation combined with OAV analysis showed that 17 volatile substances in the freeze-dried sea cucumber powder were considered to be the predominant volatile compounds (OAV > 1).The primary fishy compounds found in sea cucumber powder were identified as hexanal, octanal, and an unidentified compound using GC-O, which can be effectively removed (OAV can\'t been estimated) by the supercritical fluid extraction strategy we established.
摘要：
在加工过程中，在海参粉中检测到40多种挥发性化合物（通过冷冻干燥，海水淡化,超临界流体萃取和超微研磨)通过包括电子鼻在内的多种方法，GC-IMS和GC-MS。已经确定醛是原始冻干样品中的主要挥发性物质，约占总挥发性物质的30%。此外,我们建立了一种超临界流体萃取策略，可以有效地去除海参粉末中的醛。GC-IMS和GC-MS表明醛的相对含量显著降低了14%和28%,分别。使用GC-MS定量醛显示辛醛从927μg/kg显著降低至159μg/kg。进一步的调查结合OAV分析显示,冻干海参粉中的17种挥发性物质被认为是主要的挥发性化合物(OAV>1)。在海参粉末中发现的主要鱼腥味化合物被鉴定为己醛，octanal,和使用GC-O的身份不明的化合物，通过我们建立的超临界流体萃取策略可以有效地去除（OAV无法估计）。
