title: Compositions and yield of lipids extracted from hepatopancreas of Pacific white shrimp (Litopenaeus vannamei) as affected by prior autolysis.
abstract: 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.
authors.affiliation: Department of Food Technology, Faculty of Agro-Industry, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand.
authors.forename: Theeraphol
authors.initials: T
authors.lastname: Senphan
authors.forename: Soottawat
authors.initials: S
authors.lastname: Benjakul
mesh_terms: D000818:Animals; D005511:Food Handling / Q000379:methods*; D043143:Hepatopancreas / Q000737:chemistry; D006358:Hot Temperature; D006868:Hydrolysis; D008055:Lipids / Q000737:chemistry* / Q000302:isolation & purification; D033561:Penaeidae / Q000737:chemistry*; D012758:Shellfish / Q000032:analysis*
chemical_list: D008055:Lipids