摘要
为研究虹鳟(Oncorhynchus mykiss)体内土腥味物质的分布规律及其与养殖水质的关系,本文比较了不同规格虹鳟以及虹鳟不同组织中的二甲基异茨醇(2-methylisoborneol,MIB)和土臭素(Geosmin,GSM)含量;比较了养殖虹鳟、大西洋鲑(Salmo salar)和银鲑(O.kisutch)体内的MIB和GSM含量及其养殖环境的水质情况,分析了鱼体内MIB和GSM含量与水质的相关性。研究表明,虹鳟背肌中MIB和GSM含量随鱼体规格增大而升高;虹鳟肝脏中MIB和GSM含量显著高于背肌和鱼皮(P<0.05),鱼皮中MIB和GSM含量最低。相关性分析显示,鱼体内MIB含量与水温、pH呈显著正相关(P<0.05),GSM含量与氨氮、溶解性活性磷及总磷显著正相关(P<0.05)。研究结果表明,虹鳟体内土腥味物质的分布因鱼体规格和组织不同而异,鱼体内的土腥味物质与水质有关。
In order to demonstrate the distribution of the earthy-musty off-flavor compounds in rainbow trout(Oncorhynchus mykiss)and the correlation relationship between water quality and the concentrations of 2-methylisoborneol(MIB)and geosmin(GSM)in fish,this study is to compare the concentration of MIB and GSM among different sizes of rainbow trout and their different tissues.The water quality and concentrations of MIB and GSM in rainbow trout,Atlantic salmon(Salmo salar)and silver salmon(O.kisutch)are also compared.The results show that the concentrations of MIB and GSM in the muscle of rainbow trout increase with the size of the fish;The concentrations of MIB and GSM in liver are significantly higher than those in muscle and skin,and the concentrations of MIB and GSM in skin are the lowest.The correlation analysis demonstrates that the concentration of MIB is significantly and positively correlates with water temperature and pH(P<0.05),and the concentration of GSM is significantly and positively correlates with the concentrations of total ammonium nitrogen,soluble reactive phosphorus and total phosphorus in water(P<0.05).This study demonstrates that the distribution of off-flavor compounds is different among tissues and different sizes of rainbow trout.Moreover,the off-flavor compounds in fish are related to water quality.
作者
韩萃
魏发奕
李丽
董双林
高勤峰
HAN Cui;WEI Fa-Yi;LI Li;DONG Shuang-Lin;GAO Qin-Feng(Key Laboratory of Mariculture(Ocean University of China),Ministry of Education,Qingdao 266003,China;Function Laboratory for Marine Fisheries Science and Food Production Processes,Pilot National Laboratory for Marine Science and Technology(Qingdao),Qingdao 266237,China)
出处
《中国海洋大学学报（自然科学版）》
CAS
CSCD
北大核心
2021年第1期23-30,共8页
Periodical of Ocean University of China
基金
中央高校基本科研业务费专项(201861028)
中国海洋大学-奥本大学水产养殖与环境科学联合研究中心项目
国家重点研究发展计划项目(2019YFD0901000)资助。
关键词
虹鳟
二甲基异茨醇
土臭素
规格
组织
水质
rainbow trout
2-Methylisoborneol
geosmin
sizes
tissue
water quality
