Department of Food Technology, Faculty of Agro-Industry, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand.
Food Chem. 2012 Sep 15;134(2):829-35. doi: 10.1016/j.foodchem.2012.02.188. Epub 2012 Mar 12.
Compositions and yield of lipids extracted from hepatopancreas of Pacific white shrimp (Litopenaeus vannamei) subjected to autolysis at 60°C for different times (0, 30, 60, 90 120 and 150 min) were investigated. Extraction yield increased from 7.4% to 8.8% as autolysis time increased from 0 to 150 min. Coincidental increase in total carotenoid content was obtained with increasing autolysis time (p<0.05). The increases in thiobarbituric acid-reactive substances (TBARS) and p-anisidine value (AV) of lipids were noticeable when autolysis time increased (p<0.05). However, no changes in free fatty acid (FFA) content were observed within the first 60 min of autolysis (p>0.05), but subsequently increased up to 150 min. (p<0.05). No differences in fatty acid profiles of lipids extracted from hepatopancreas without and with 60 min prior autolysis were observed. Lipids extracted contained docosahexaenoic acid (DHA; C22:6(n-3)) as the most abundant fatty acid, followed by eicosapentaenoic acid (EPA; C20:5(n-3)). Therefore, prior autolysis at 60°C for 60 min increased the extraction yield without negative effect on lipid quality.
研究了在 60°C 下不同自解时间（0、30、60、90、120 和 150 min）对太平洋白对虾（Litopenaeus vannamei）肝胰腺中提取的脂质的组成和产率的影响。自解时间从 0 增加到 150 min 时，提取产率从 7.4%增加到 8.8%。随着自解时间的增加，总类胡萝卜素含量也随之增加（p<0.05）。脂质中硫代巴比妥酸反应物质（TBARS）和对茴香胺值（AV）的增加在自解时间增加时是明显的（p<0.05）。然而，在自解的前 60 分钟内，游离脂肪酸（FFA）含量没有变化（p>0.05），但随后增加到 150 分钟（p<0.05）。未观察到未经 60 分钟自解和经 60 分钟自解的肝胰腺中提取的脂质的脂肪酸谱有差异。提取的脂质含有二十二碳六烯酸（DHA；C22:6(n-3)）作为最丰富的脂肪酸，其次是二十碳五烯酸（EPA；C20:5(n-3)）。因此，在 60°C 下预先自解 60 min 可提高提取产率，而不会对脂质质量产生负面影响。
