摘要
为了解养殖马口鱼的营养价值,采用国家标准的生化测定方法,对1冬龄人工养殖马口鱼进行了肌肉营养成分分析及评价.结果显示,养殖马口鱼肌肉中水分、粗蛋白质、粗脂肪和粗灰分的含量分别为77.05%、18.78%、1.79%和1.31%. 17种被检测出的氨基酸总量(TAA)为70.74%,其中必需氨基酸(EAA)、半必需氨基酸(HEAA)、非必需氨基酸(NEAA)和鲜味氨基酸(DAA)分别为28.38%、6.63%、35.73%和26.99%. EAA/TAA、EAA/NEAA和DAA/TAA分别为40.12%、79.43%和38.15%;其限制性氨基酸为含硫氨基酸(Met+Cys)和缬氨酸(Val),必需氨基酸指数为63.23.19种被检出的脂肪酸中,有4种饱和脂肪酸(SFA)、4种单不饱和脂肪酸(MUFA)及11种多不饱和脂肪酸(PUFA),总SFA、总MUFA、总PUFA、总n-3PUFA、总n-6PUFA以及二十碳五烯酸(EPA)与二十二碳六烯酸(DHA)之和分别为27.1%、36.42%、36.48%、13.55%、22.93%和11.65%.表明养殖马口鱼是一种蛋白质含量较高、氨基酸平衡效果较好、不饱和脂肪酸含量丰富、营养价值较高的经济鱼类.
In order to evaluate the nutritive quality of cultured Opsariichthys bidens, the muscle nutrient components were analyzed by the national standard(biochemical measurement) methods in one winter-old cultured O. bidens. The results showed that the contents of water moisture, crude protein, crude fat and crude ash in O. bidens muscle were 77.05%, 18.78%, 1.79%, and 1.31%, respectively. A total of 17 kinds of amino acids were detected and its content was 70.74%, including 28.38% essential amino acids(EAA), 6.63% half essential amino acids(HEAA), 35.73%non-essential amino acids(NEAA), and 26.99% delicious amino acids(DAA). The ratios of EAA/TAA, EAA/NEAA and DAA/TAA were 40.12%, 79.43% and 38.15%, respectively.The limiting amino acids were methionine, cystine and valine, and the essential amino acid index(EAAI) was63.23. A total of 19 kinds of fatty acids were detected, including 4 kinds of saturated fatty acids(SFA), 4 kinds of monounsaturated fatty acids(MUFA), and 11 kinds of polyunsaturated fatty acids(PUFA). The ∑SFA, ∑MUFA,∑PUFA, ∑n-3 PUFA and ∑n-6 PUFA were 27.1%, 36.42%, 36.48%, 13.55%, and 22.93%, respectively. In addition, the total content of eicosapentenoic acid(EPA) and docosahexoenoic acid(DHA) in fatty acids were11.65%. Our results suggest that the O. bidens has high nutritive quality with abundant crude protein and unsaturated fatty acid, and superior amino acid balance effect.
引文
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