摘要
以池塘内循环“跑道”与传统土池模式养成的梭鱼(Liza haematocheila)为研究对象,分析2种不同模式对梭鱼肌肉基本营养组成、氨基酸和脂肪酸组成、质构参数以及土腥味物质含量等指标的影响。结果表明,相比于土池组,“跑道”组梭鱼背肌粗脂肪含量显著下降,粗灰分含量显著增加(P<0.05);“跑道”组鱼肉中赖氨酸和缬氨酸含量以及必需氨基酸总量/非必需氨基酸总量显著高于土池组(P<0.05);“跑道”组鱼肉饱和脂肪酸总量显著低于土池组(P<0.05),但多不饱和脂肪酸总量显著增加(P<0.05);硬度等7项质构参数指标均以“跑道”组高于土池组(P<0.05)。土池组的梭鱼肌肉中检测有土臭素存在,而“跑道”组中未检测到土臭素和2-甲基异莰醇。研究表明“跑道”模式能够一定程度提升梭鱼的营养品质。
We analyzed the basic nutrinet composition,amino acids and fatty acid contents,texture characteristics and off-flavor compounds of muscle of Liza haematocheila cultured in in-pond raceway system(IPRS)and usual-pond system(UPS).Results show that the crude lipid content in IPRS was significantly lower than that in UPS,but the crude ash content increased significantly(P<0.05).The lysine and valine contents as well as the ratio of essential amino acids/non-essential amino acids were higher in IPRS than those in UPS(P<0.05).The total saturated fatty acid content of fish dorsal muscle in IPRS was significantly lower than that in UPS(P<0.05),but the total content of poly-unsaturated fatty acid content was significantly higher(P<0.05).The texture characteristics were all higher in IPRS than those in UPS(P<0.05).The geosmin concentration in muscle was detected in UPS,but the geosmin and 2-methylisobomeol were not observed in IPRS.The results indicate that in-pond raceway system has positive effects on improving muscle nutritional quality of L.haematocheila.
作者
周凡
丁理法
彭建
陈刘浦
相兴伟
贝亦江
马文君
丁雪燕
ZHOU Fan;DING Lifa;PENG Jian;CHEN Liupu;XIANG Xingwei;BEI Yijiang;MA Wenjun;DING Xueyan(Zhejiang Fisheries Technical Extension Center,Hangzhou 310023,China;Wenlin Fisheries Technical Extension Center,Wenlin 317500,China;College of Food Science and Technology,Zhejiang University of Technology,Hangzhou 310014,China)
出处
《南方水产科学》
CAS
CSCD
北大核心
2021年第3期70-76,共7页
South China Fisheries Science
基金
浙江省科技厅重点科技研发项目(2018C02037)
浙江省农业农村厅“三农六方”科技协作项目(2019SNLF022)
国家重点研发计划“蓝色粮仓科技创新”专项“东海渔业资源精深加工与高值利用模式示范”(2020YFD0900902)
浙江省农业农村厅2020-2022年水产产业技术项目。
