Effects of different dietary lipid levels on physiological metabolism and odor quality of hepatopancreas in adult female Chinese mitten crab(Eriocheir sinensis)  

作　　者：Jingjing Wu Long Zhang Xiaodong Jiang Xugan Wu Xichang Wang 吴菁菁;张龙;姜晓东;吴旭干;王锡昌(College of Food Science and Technology,Shanghai Ocean University,Shanghai,China;Shanghai Engineering Research Center of Aquatic-Product Processing and Preservation,Shanghai,China;Shanghai Collaborative Innovation Center for Cultivating Elite Breeds and Green-culture of Aquaculture animals,Shanghai Ocean University,Shanghai,China;National Demonstration Centre for Experimental Fisheries Science Education,Shanghai Ocean University,Shanghai,China;Centre for Research on Fish Nutrition and Environmental Ecology of the Ministry of Agriculture,Shanghai Ocean University,Shanghai,China)

机构地区：[1]College of Food Science and Technology,Shanghai Ocean University,Shanghai,China [2]Shanghai Engineering Research Center of Aquatic-Product Processing and Preservation,Shanghai,China [3]Shanghai Collaborative Innovation Center for Cultivating Elite Breeds and Green-culture of Aquaculture animals,Shanghai Ocean University,Shanghai,China [4]National Demonstration Centre for Experimental Fisheries Science Education,Shanghai Ocean University,Shanghai,China [5]Centre for Research on Fish Nutrition and Environmental Ecology of the Ministry of Agriculture,Shanghai Ocean University,Shanghai,China

出　　处：《Food Quality and Safety》2024年第3期589-602,共14页食品品质与安全研究（英文版）

基　　金：supported by the Shanghai Agricultural Science and Technology Innovation Project from the Shanghai Municipal Commission of Agriculture(No.T2023329);the Startup Foundation for Young Teachers from Shanghai Ocean University(No.A2-2006-23-200311);the Project for Shanghai Collaborative Innovation Center for Cultivating Elite Breeds and Green-culture of Aquaculture Animals from Shanghai Education Committee(No.2021-KJ-02-12);the Leading Talent Project in Yellow River Delta from Dongying Municipal Government of Shandong Province(No.DYRC202100215);the Agriculture Research System from the Shanghai Municipal Commission of Agriculture(No.202304),China.

摘　　要：Objectives:This study aimed to investigate the impact of different dietary lipid levels on the physiological metabolism and odor quality of adult female Eriocheir sinensis during the fattening phase.Materials and Methods:Five dietary schemes,each containing different total lipid levels(4%,7%,10%,13%,and 16%),were administered over a 60-d fattening period for adult female crab(approximately 50 g,n=60).Chromatography and spectroscopy techniques were used for the detection of aroma and key aroma precursors.Results:Dietary lipids had no significant effect on growth performance and hepatopancreas index(P<0.05).The carotenoid content showed an increasing and then decreasing trend,with a significant increase to 1312.51 mg/kg(P<0.05)at 7%lipid content of the diet.In contrast,a diet with a 13%lipid level led to a significant increase in total unsaturated fatty acids(115.3 mg/g,P<0.05),which maximized the contents of major fatty acids(oleic,linoleic,and linolenic,among others),and presented a fluctuating trend.A diet with higher lipid levels(16%)inhibited fatty acid accumulation.Moreover,a 13%dietary lipid level enhanced characteristic aroma compounds(for example,nonanal,octanal,hexanal,3-methylbutanal,and 2-heptanone)in E.sinensis cooked hepatopancreas.Through an orthogonal partial least squares discriminant analysis model,it becomes evident that lipids and carotenoids together promote aroma formation in hepatopancreas.Conclusions:Based on the current findings,the optimal dietary lipid level for enhancing the odor quality of hepatopancreas in adult female E.sinensis during the fattening phase was 13%.This study provides more precise options for the high-quality cultivation of E.sinensis.

关 键 词：Eriocheir sinensis dietary lipid physiological metabolism headspace gas chromatography ion mobility spectrometry(HSGC-IMS) odor quality 

分 类 号：TS254.4[轻工技术与工程—水产品加工及贮藏工程]