欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
测定了黄河中上游特有鱼类兰卅l鲇的肌肉生化成分并对其进行了营养学评价。结果表明，兰州鲇肌肉（鲜样）中粗蛋白质量分数（17．4±0．7）％，粗脂肪（2．22±1．09）％，粗灰分（1．12±0．09）％，水分（80．4±0．8）％。肌肉中含有18种氨基酸，总量为（71．29±3．71）％（质量分数，干样），其巾含量最高的为谷氨酸（10．43±0．47）％，含量最低的为胱氨酸（0．663±0．040）％，8种人体必需氨基酸总量为（30．24±2．18）％，占氨基酸总量的42．38％，其构成比例符合FAO／WHO标准。兰州鲇肌肉中限制性氨基酸为缬氨酸、亮氨酸和异亮氨酸，必需氨基酸指数（EAAI）为69．3，4种鲜味氨基酸总质量分数为24．62％（干样）。不饱和脂肪酸占脂肪酸总量的65．21％，并以油酸（C18：1）和亚油酸（C18：2）为主。磷含量显著高于其余12种矿物元素（P〈0．05），锌在8种微量元素中含量（10．18mg／kg，鲜样）最高，铁（8．31mg／kg，鲜样）次之，硒含量（0．31mg／kg，鲜样）丰富。从营养学角度，兰州鲇是一种营养价值较高的优质鱼类。
英文摘要：
Measurements were made on biochemical components in muscles of Silurus lanzhouensis which is an endemic fish living in the middle-up reach of the Yellow River. Samples were collected from Hukou to Sanmenxia section of the Yellow River in China during 2004--2005. Main nutrient contents, amino acids, fatty acids and main mineral element were analyzed by using 6 groups and trace element by 11 groups, which from 42 individuals. Each group was composed of 3 individuals. The results showed that contents of crude protein,crude fat, ash and moisture of fresh muscle were （ 17.4 ±0. 7 ） % , （ 2.22 ± 1.09 ） % , （ 1.12 ±0. 09 ） % and （ 80.4 ±0. 8 ） % respectively. The composition of amino acids of muscle was 18, among which there were 8 essential amino acids for human needs. In dry sample, the total content of amino acids was （71.29 ±3.71 ）% ;the content of essential amino acids was （30.24 ±2. 18）% ;4 kinds of delicious amino acids accounted for 24.62%. Glu was the most abundant and Cys was the shortest in all amino acids of the muscle. The percentage of essential amino acids in total was 42.38%. The essential amino acids index （EAAI） was 69.30 and the constitutional rate of essential amino acids accorded with FAO/WHO standard. According to nutrition evaluation, in the amino acids score （AAS） and chemical score （CS）,the limited amino acids of Silurus lanzhouensis were Val, Leu and Ite. 4 saturated fatty acids and 9 unsaturated fatty acids were found in muscle and the amount of unsaturated fatty acids was 65. 210%. C18： 1 and C18：2 were the main unsaturated fatty acids,which was 41. 531% and 7. 309% respectively. Minerals such as P, Na,K,Ca,Mg,Zn,Fe and Se were rich in these samples. The content of P was significantly higher than other mineral elements （p 〈 0.05 ）. In all elements, Zn was the richest microelement, which was 10. 18 mg/kg （fresh） , Fe and Se were secondary and tertiary mieroelment, respectively,which was 8.31 mg/kg and 0.31 mg/kg. Furthermore, the ratio of
同期刊论文项目
同项目期刊论文
期刊信息
位置：