摘要
为有助于建立科学的凡纳滨对虾营养质量分级体系,测定和分析了不同盐度(2‰~36‰)养殖条件下,凡纳滨对虾(Litopenaeus vannamei)肌肉中的常规营养成分以及氨基酸的含量与组成。结果表明,随着盐度的升高,凡纳滨对虾肌肉中的水分含量呈现显著的下降趋势,而粗蛋白含量则呈现显著上升趋势,各盐度组中粗脂肪含量的变化无统计学上的显著性差异,盐度2‰组的水分含量显著高于盐度4‰~36‰组,而盐度20‰组的粗蛋白含量则显著高于盐度2‰、4‰、6‰、12‰和36‰组。凡纳滨对虾肌肉中共检测出16种氨基酸,其中盐度20‰组的氨基酸总量、必需氨基酸含量、非必需氨基酸含量以及呈味氨基酸含量均显著高于其他盐度组,盐度20‰条件下的苏氨酸、丝氨酸、谷氨酸、甘氨酸、亮氨酸、络氨酸、赖氨酸均显著高于其他盐度组(P<0.05),而各盐度组间苯丙氨酸含量则无显著差异(P>0.05)。综上所述:在盐度20‰的养殖环境下,凡纳滨对虾的肌肉营养价值和风味均表现出显著优势。
To help establish a scientific grading system for nutritional quality of Pacific white shrimp(Litopenaeus vannamei),the conventional nutritional components,amino acid content and composition in the muscle of Pacific white shrimp were measured and analyzed under different salinity(2‰~36‰)aquaculture conditions.The results showed that with the increase of salinity,the water content in the muscles of Pacific white shrimp showed a significant downtrend,while the crude protein content showed a significant uptrend.There was no statistically significant difference in the changes of crude fat content among the salinity groups,The moisture content of the 2‰salinity group was significantly higher than that of the 4‰to 36‰salinity group,while the crude protein content of the 20‰salinity group was significantly higher than that of the 2‰,4‰,6‰,12‰,and 36‰salinity groups.16 amino acids were detected in the muscles of Pacific white shrimp,among which the total amino acid content,essential amino acid content,non-essential amino acid content,and flavor amino acid content of the 20‰salinity group were significantly higher than those of other salinity groups,Under a salinity of 20‰,the levels of threonine,serine,glutamic acid,glycine,leucine,tyrosine,and lysine were significantly higher than those in other salinity groups(P<0.05),while there was no significant difference in phenylalanine content among the salinity groups(P>0.05).In summary,in a farming environment with a salinity of 20‰,the muscle nutritional value and flavor of Pacific white shrimp show significant advantages.
作者
李艳
罗鑫
吴宁
张丹娜
LI Yan;LUO Xin;WU Ning;ZHANG Danna(Tianjin Agricultural Ecological Environment Monitoring and Agricultural Products Quality Inspection Center,Tianjin 300221,China;Tianjin Fishery Research Institute,Tianjin 300221,China)
基金
天津市农业发展服务中心种业青年科技创新项目(项目编号:zxkj202426)
天津市农业发展服务中心青年科技创新项目(项目编号:zxkj202450)
天津市农业生态环境监测与农产品质量检测中心青年科技创新项目(nyzj202205)。
