摘要
对大口黑鲈[Micropterus salmoides(Lacépède)]"优鲈1号"(以下简称"优鲈1号")与非选育群体(简称对照组)的肌肉营养成分及营养品质进行分析比较。结果表明,"优鲈1号"和对照组肌肉中水分、粗蛋白、粗脂肪、粗灰分含量分别为73.63%和74.35%、19.34%和19.42%、4.45%和4.67%、1.09%和1.12%,统计分析表明,"优鲈1号"肌肉中水分和粗脂肪含量低于对照组,粗蛋白和粗灰分含量与对照组差异不显著(P>0.05)。对6种矿物质元素进行检测,"优鲈1号"和对照组肌肉中钙(Ca)、镁(Mg)、铁(Fe)、锌(Zn)和硒(Se)含量分别为428.34 mg/kg和424.57 mg/kg、252.63 mg/kg和259.77 mg/kg、6.92 mg/kg和5.76 mg/kg、7.73 mg/kg和5.77 mg/kg、0.40 mg/kg和0.41 mg/kg,统计分析显示"优鲈1号"肌肉中铁(Fe)和锌(Zn)含量显著高于对照组(P<0.05),其他元素差异均不显著(P>0.05)。"优鲈1号"和对照组肌肉中均测定出17种氨基酸,其总氨基酸(TAA)、必需氨基酸(EAA)和鲜味氨基酸(DAA)含量分别为18.10 mg/100 g和17.17 mg/100 g、9.46 mg/100 g和8.72 mg/100 g、8.00 mg/100 g和7.80 mg/100 g,统计分析显示差异均不显著(P>0.05)。根据氨基酸评分(AAS)和化学评分(CS)计算结果,第一限制性氨基酸均为蛋氨酸+胱氨酸(Met+Cys)。"优鲈1号"和对照组肌肉中均检测到28种脂肪酸,其中饱和脂肪酸(SFA)、单不饱和脂肪酸(MUFA)、多不饱和脂肪酸(PUFA)分别为13.96 g/kg和14.68 g/kg、13.66 g/kg和14.72 g/kg、16.37 g/kg和16.58 g/kg,其中饱和脂肪酸/不饱和脂肪酸(SFA/UFA)均为0.47。综上所述,"优鲈1号"仅在水分、粗脂肪、铁(Fe)和锌(Zn)含量上略优于对照组,其他肌肉营养成分和含量差异均不显著(P>0.05)。
We compared the nutritional composition and muscle quality of a new, selectively bred strain of Mi- cropterus salmoides, ＂Youlu No. 1＂ with a non-selected population （control）. The moisture, crude protein, crude fat, crude ash content of ＂Youlu No.l＂ with the control were 73.63% and 74.35%, 19.34% and 19.42%, 4.45% and 4.67%, 1.09% and 1.12%, respectively. The muscle moisture and crude fat content were lower in ＂Youlu No.I＂ than in the controls but there was no difference in crude protein and crude ash content. The muscle tissue levels of calcium （Ca）, magnesium （Mg）, iron （Fe）, zinc （Zn） and selenium （Se） were 428.34 and 424.57 mg/kg, 252.63 and 259.77 mg/kg, 6.92 and 5.76 mg/kg, 7.73 and 5.77 mg/kg, 0.40 and 0.41 mg/kg in the ＂Youlu No.l＂ and the con- trol groups, respectively. Fe and Zn were significantly higher in ＂Youlu No.l＂ than in the control （P〈0.05）, but there was no difference between the groups for the remaining elements. There was no difference in the muscle amino acid profile among the two groups. Total amino acid （TAA）, essential amino acid （EAA）, and delicious amino acid （DAA） content was 18.10 and 17.17 mg/100 g, 9.46 and 8.72 rag/100 g, 8.00 and 7.80 mg/100 g for the two groups. Based on a nutritional evaluation that incorporated the amino acid score （AAS） and chemical score （CS）, methionine ＋ cystine （Met＋Cys） was identified as the first limiting amino acid. We found 28 fatty acids in the muscle of the two groups. The saturated fatty acid, monounsaturated fatty acid, and polyunsaturated fatty acid content was 13.96 and 14.68 g/kg, 13.66 and 14.72 g/kg, 16.37 and 16.58 g/kg, respectively. The saturated fatty acid/unsaturated fatty acid （SFA/UFA） ratio was 0.47. In summary, ＂Youlu No.l＂ had higher muscle moisture, crude fat, iron, and zinc content than the control group, and there were no significant differences in the composi- tion and other nutrients of muscle between the two groups.
出处
《中国水产科学》
CAS
CSCD
北大核心
2012年第3期423-429,共7页
Journal of Fishery Sciences of China
基金
农业部948计划重点项目(2011-G12)
农业部公益性行业科研专项(200903045)
国家自然科学基金项目(30901102)
广东省科技兴渔项目(A200899F01)
关键词
大口黑鲈
优鲈1号
营养成分
营养品质
Micropterus salmoides
Youlu No. 1
nutrient components
nutritive quality
