Effects of Industrialized Circulating Aquaculture Mode on Muscle Nutritional Components and Volatile Flavor Compounds of Largemouth Bass(Micropterus salmoides)
This experiment was conducted to investigate the effects of industrialized circulating aquaculture mode on the muscle nutritional components and volatile flavor compounds of largemouth bass(Micropterus sal-moides).The largemouth bass from pond was temporarily raised in an industrialized circulating aquaculture sys-tem,samples were collected and the muscle nutritional components and volatile flavor compounds were identi-fied and analyzed on the 1st,10th,20th and 30th day,respectively.The results showed that different tempora-ry culturing time in industrialized circulating aquaculture system had no significant effects on the contents of crude protein and ether extract in muscle of largemouth bass(P＞0.05),but had significant effects on the con-tents of total amino acid,C20:5n-3(EPA)and C22:6n-3(DHA)in muscle of largemouth bass(P＜0.05),and they highest contents of them were found on the 30th day of temporary culturing,which were significantly higher than those on the 1st,20th and 30th day of temporary culturing(P＜0.05).Amino acid score(AAS)and chemical score(CS)were used to evaluate the essential amino acids of largemouth bass muscle.The first limiting amino acid of largemouth bass in AAS mode was valine,and the first limiting amino acid in CS mode was methionine+cystine.By constructing the fingerprint of volatile flavor substances in the muscle of large-mouth bass cultured in industrialized circulating aquaculture system for different time,it was found that the contents of pleasant odor substances such as 2-heptanone,2-pentanone,2-butanone,cyclopentanone,1-oc-tene-3-ol,1-hexanol and other substances in the muscle were increased with the extension of temporary cultu-ring time in industrialized circulating aquaculture system.Above all,we can conclude that,adult largemouth bass cultured in ponds are transferred to an industrialized circulating aquaculture system for temporary culturing can improve the muscle nutritional quality and flavor of largemouth bass,which is an effective technical meas-ure to improve the quality of adult largemouth bass,and it is suggested to promote the application in improving the quality of adult largemouth bass cultured in ponds.[Chinese Journal of Animal Nutrition,2024,36(5):3192-3208]
万方数据
维普
