Activities of Endogenous Lipase and Lipolysis-Oxidation of Low-Salt Lactic Acid-Fermented Fish (Decapterus maruadsi)

作者：Cao, Song Min; Wu, Yan Yan^*; Li, Lai Hao; Yang, Xian Qing; Chen, Sheng Jun; Hu, Xiao; Ma, Hai Xia

来源：Journal of Oleo Science, 2018, 67(4): 445-453.

DOI：10.5650/jos.ess17176

• lipolysis oxidation
• endogenous lipase
• highly salted fish
• low-salt lactic acid-fermented fish
• Decapterus maruadsi

There is increasing demand for low-salt meat products that retain traditional flavors. In this study, dry-salted fish (Decapterus maruadsi) were processed by 2 methods to obtain traditional salted fish (HS) and low-salt lactic acid-fermented fish (LAF). The relationship between lipolysis and lipid oxidation was investigated by evaluating changes in endogenous lipase (lipolytic enzymes; lipoxygenase, LOX), free fatty acid composition, thiobarbituric acid reactive substances (TBARS), and peroxide value (POV) during processing. Lipolytic enzyme activity showed a decreasing trend, in general. LOX activity initially increased and eventually decreased. Phospholipase, acid lipase, and neutral lipase activity was 0.33, 0.17, 0.57 (in HS) and 0.39, 0.25, 0.67 (in LAF) times in the final product than the activity levels observed in fresh fish. A principal component analysis indicated that phospholipase and neutral lipase play major roles in promoting lipid hydrolysis (in HS and LAF), the correlation between lipolytic activity and lipid oxidation in HS is greater than the correlation in LAF, and the contribution of LOX to lipid oxidation was minor in salted fish.

• 出版日期2018-4
• 单位中国水产科学研究院; 上海海洋大学