Abstract: To promote the use of formulated diet in crab farming, Chinese mitten crab (Eriocheirsinensis) (initial body weight: 5.33 ±0.79 g) were selected as the research object, and the differences of muscle flavor quality was compared after feeding with trash fish (TFG) and formulated diet (FDG). The sensory evaluation of Eriocheirsinensis was carried out by paired comparison test. The results showed that compared with TFG, Eriocheirsinensis muscle from FDG had less fishy taste, more delicious taste and pleasant odor. There were no significant differences in 17 kinds of free amino acids in muscle between the two groups (P>0.05). There were no significant differences in the contents of ionosine-5′-monophosphate and guanosine 5′-monophosphate disodium salt in muscle between the two groups (P>0.05), but the contents of adenosine 5′-monophosphate sodium salt (AMP) and Equivalent Umami Concentration (EUC) of FDG were significantly higher than those of TFG (P<0.05). Compared with TFG samples, the proportion of saturated fatty acids (SFAs) and monounsaturated fatty acids (MUFAs) in FDG samples were significantly reduced (P<0.05), while the proportion of polyunsaturated fatty acid (PUFAs) was significantly increased (P<0.05). Significantly elevated content of aldehydes(P<0.05) and significantly decreased content of ketones and N-containing compounds (P<0.05) were observed in FDG samples compared to TFG samples. Compared with TFG samples, gene and protein relative expression of LOX5 and the enzyme activity of LOX were significantly increased in FDG samples (P<0.05). In conclusion, formulated diet can enhance the flavor of crab meat and increase the contents of polyunsaturated fatty acids, AMP and EUC, which is more in line with the needs of consumers for health and umami.
熊玮, 戴永军, 刘文斌, 郭慧星, 华皓坤, 杜婉婷, 邱语菡, 蒋广震. 投喂冰鱼和人工配合饲料的中华绒螯蟹肌肉风味品质比较[J]. 大连海洋大学学报, 2023, 38(3): 445-454.
XIONG Wei, DAI Yongjun, LIU Wenbin, GUO Huixing, HUA Haokun, DU Wanting, QIU Yuhan, JIANG Guangzhen. Comparison of muscle flavor quality of Chinese mitten crab (Eriocheir sinensis) fed with trash fish and formulated diet. Journal of Dalian Ocean University, 2023, 38(3): 445-454.
2023, Vol. 38 
