中国水产科学2018，Vol.25Issue(1)：108-115,8.DOI:10.3724/SP.J.1118.2018.17043
罗非鱼不同养殖系统对产出效果及异味物质含量的影响
Variations in output and the off-flavor compounds geosmin and 2-methylisoborneol in different tilapia cultivation systems
摘要
Abstract
This study compared the effects of four different tilapia cultivation systems (a tilapia-water spinach in-tegrated system, a sewage discharging system, a sewage discharging and tilapia-water spinach integrated system, and a tilapia monoculture system as a control) on the variations in water quality, tilapia production, and off-flavor contents in water and tilapia in June, July, and August 2016. Using gas chromatography and mass spectrometry (GC-MS) based on microwave-assisted distillation followed by purge-and-trap, the off-flavor compounds geosmin (GSM) and 2-methylisoborneol (2-MIB) were determined in water and tilapia tissue. The results showed that pro-duction in the tilapia-water spinach integrated system was the highest among the systems examined (P<0.05). The contents of ammonia nitrogen and nitrite in the sewage discharging and tilapia-water spinach integrated system were significantly lower compared with the control group [(0.67±0.02) μg/kg and (0.870±0.018) μg/kg]. In addi-tion, the concentrations of 2-MIB and GSM in the muscle of tilapia in the sewage discharging and tilapia-water spinach integrated system [(0.31±0.02) μg/kg and (0.53±0.042) μg/kg] were significantly lower than those in the control group [(0.67± 0.02) μg/kg and (0.870±0.018) μg/kg, respectively]. These results indicate that the sewage discharging and tilapia-water spinach integrated system reduced the accumulation of off-flavor compounds in wa-ter and tilapia muscle in an intensive tilapia farming system.关键词
罗非鱼/养殖系统/异味/土臭素/二甲基异莰醇Key words
tilapia/cultivation system/off-flavor/geosmin/2-methylisoborneol分类
农业科技引用本文复制引用
张凯,刘利平,陈桃英,梁勤朗,吴宗文,邓棚文,湛嘉..罗非鱼不同养殖系统对产出效果及异味物质含量的影响[J].中国水产科学,2018,25(1):108-115,8.基金项目
欧盟委员会第七框架协议项目(222889) （222889）
通威股份有限公司合作项目. （）
