大黄鱼四家系肌肉营养成分差异及品质选育分析  

The nutrition of fatty acid and amino acid analysis of four genealogies Pseudosciaena crocea(Richardson)

作　　者：李明云[1] 郑岳夫[1,2] 管丹东[1,2] 史雨红[1] 陈炯[1] 林恒潺[1] 陈萍[1] 

机构地区：[1]宁波大学应用海洋生物技术教育部重点实验室,浙江宁波315211 [2]象山县海洋与渔业局,浙江象山315700

出　　处：《水产学报》2009年第4期632-638,共7页Journal of Fisheries of China

基　　金：国家"八六三"高技术研究发展计划(2002AA603021;2006AA10A405);长江学者和创新团队发展计划(IRT0734);浙江省重大项目(2006C12005);宁波市重大招标项目(2004C100040)

摘　　要：实验对象山港海区网箱养殖的岱衢洋家系、官井洋家系以及它们的正交和反交家系大黄鱼背肌肉进行了一般营养成分、氨基酸和脂肪酸组分分析,从营养学的角度分析和评价不同家系大黄鱼的品质。结果表明,四个家系之间大黄鱼蛋白质含量和灰分含量没有显著差异;脂肪含量反交家系与正交家系、岱衢洋家系和官井洋家系有显著差异,官井洋家系含量最高(13.51%),反交家系家系含量最低(10.59%);水份含量的变化与脂肪含量的变化成反比,反交家系水份含量与正交家系、岱衢洋家系和官井洋家系同样都有显著差异。岱衢洋家系、官井洋家系、正交家系和反交家系氨基酸总量分别为57.83%±1.19%、54.45%±1.01%、54.80%±2.97%和58.39%±0.71%,其中反交家系、岱衢洋家系总氨基酸含量同官井洋家系都存在显著差异(P<0.05);必需氨基酸总量分别为30.08%±0.52%,28.05%±0.35%,28.40%±1.76%,29.97%±0.41%,其中岱衢洋家系、反交家系同官井洋家系都存在显著差异(P<0.05);鲜味氨基酸总量分别为24.56%±0.26%,23.45%±0.24%,22.88%±0.61%,25.39%±0.11%,其中反交家系与其他三个家系间存在显著差异(P<0.05)。而多不饱和脂肪酸(PUFA)及n-3系列高度不饱和脂肪酸DHA所占比例以反交家系最高,且同其他三个家系存在显著差异(P<0.05),岱衢洋家系EPA(C 20∶5)含量同正交家系存在显著差异(P<0.05)。This experiment was conducted to analyze general nutrional components, the amino acid and fatty acid composition of dorsal muscles of four Pseudosciaena crocea genealogies such as Daiquyang, Guanjingyang, their positive cross, and negative cross genealogies. It showed that there was no significant difference（ P 〉 0.05 ） of protein and ash among the four genealogies. The fat content of negative cross genealogy had significant differences compared with Daiquyang, Guanjingyang and the positive cross genealogies. The Guanjingyang genealogy had the highest fat content（ 13.51% ）, while the negative cross genealogy had the lowest fat content （ 10.59% ）. The water content was inversely proportional to the fat content. The water content of negative cross genealogy compared with Daiquyang, Guanjingyang and positive cross genealogy also showed significant difference. The content of total amino acid of Daiquyang, Guanjingyang and their positive cross, negative cross genealogies was 57. 83% ± 1. 19%, 54.45% ±1.01% ,54.80% ±2.97% and 58.39% ±0. 71% respectively. There was significant difference of total amino acid content of Daiquyang and negative cross genealogies compared with that in Guanjingyang genealogy （ P 〈 0.05 ）. The content of essential amino acid was 30.08% ±0.52%, 28.05% ±0.35%, 28.40% ±1.76% and 29.97%±0.41% respectively. The difference of essential amino acid content of negative cross and Daiquyang genealogy compared with the Guanjingyang genealogy was significant （ P 〈 0.05）. The content of taste-related amino acid was 24.56% ± 0.26%, 23.45% ± 0.24%, 22.88% ±0.61% and 25.39%±0. ]1% respectively, and the difference between negative cross and the other three genealogies was significant （ P 〈 0.05）. In addition, the negative cross genealogy had the highest content of PUFA and DHA in the four genealogies and the difference was significant （ P 〈 0.05）. The difference of EPA content between Daiquyang amd the positive cross genealogy was significant （ P 〈 0.05 ）.

关 键 词：大黄鱼 家系 肌肉 营养成分 氨基酸 脂肪酸 

分 类 号：S917[农业科学—水产科学] S965.322