Effects of different baits on the edible quality and flavor of Liu Yuehuang(Eriocheir sinensis)
This study was carried out to compare the effects of different baits on the edible quality and flavor of Liu Yuehuang(Eriocheir sinensis),and Liu Yuehuang,which were fed with formula feed,iced fresh fish,black soldier fly(Hermetia illucens Linnaeus),and fresh fish+black soldier fly(fish+fly)respectively,were sampled to determine its edible quality and flavor.The results showed that Liu Yuehuang fed with iced fish had higher condition factor than the other groups(P＜0.05),while it fed with fish+fly had lower hepatopancreas index than the others(P＜0.05).The protein contents in the somite meat of Liu Yuehuang fed with either iced fish or formula feed were significantly higher than other groups,but the protein content of appendage meat in the fish+fly group was significantly higher than that both in the feed group and in the black soldier fly group(P＜0.05).The lipid content in hepatopancreas of Liu Yuehuang was dramatically higher than that in muscles,and the lipid content both in the iced fish group and in the fish+fly group were significantly higher than that in the feed group(P＜0.05),but the moisture contents of hepatopancreas both in the iced fresh fish group and in the black soldier fly group were significantly lower than that in the feed group(P＜0.05).The content of docosahexenoic acid(DHA)and n-3/n-6 values both in the muscles and hepatopancreas of Liu Yuehuang fed with iced fish were significantly higher than the other groups(P＜0.05).The dominant flavor nucleotide both in mus-cles and hepatopancreas of Liu Yuehuang was adenosine monophosphate(AMP),the content of inosinic acid(IMP)in the muscle of Liu Yuehuang fed with iced fish was significantly higher than the other groups(P＜0.05),the taste activity values(TAV)of guanylate and adenylic acid in the somite meat feeding with formula feed were almost the same compa-ring with that in iced fish group,the highest TAV of guanylate andadenylic acid was observed in hepatopancreas of Liu Yuehuang in the feed group.With regarding to appendage meat,the equivalent umami concentrations(EUC)both in the feed group and iced fish group were enhanced apparently comparing with the other groups respectively(P＜0.05),but the lowest EUC was captured in hepatopancreas of Liu Yuehuang fed with fish+fly(P＜0.05).The results of volatile substances indicated that both the muscles and hepatopancreas of Liu Yuehuang contained decanal and nonanal,but some other compounds like(E,E)-2,4-decadienal,(E)-2-octenal,benzaldehyde,and 2-nonone were detected only in hepato-pancreas,furthermore,the contents of undecanonal and benzaldehyde were elevated apparently in hepatopancreas of Liu Yuehuang fed with iced fish.Summary,feeding iced fish have obvious advantage in improving the edible quality and flavor of Liu Yuehuang.
Liu YuehuangEriocheir sinensisbaitsthe edible qualityflavor substances
国家科技期刊平台
NSTL
万方数据
