南美白对虾虾头、虾壳化学成分的对比研究

对比研究了南美白对虾虾头、虾壳的一般化学威分及氨基酸,脂肪酸、矿质元素组成. 结果表明,虾头、虾壳水分舍量最高,分别为78. 44%和75. 15%;蛋白质,灰分、甲壳素含量丰富,以湿重计,虾头中分别为6. 38%、3. 62%和3. 33%,虾壳中分别为5. 22%、5. 30%和6. 67%;虾头中脂肪、总糖及总酸度以湿基计分别为2. 42%、0. 27%和2. 30%,虾壳中则依次为1. 09%、0. 16%和2. 29%.虾头、虾壳中氨基酸种类齐全,矿质元素含量丰富,含有人体8种必需氨基酸、4种呈味氨基酸以及7种时人体有益的微量元素. 虾头、虾壳中油酸、亚油酸,DHA和EPA含量丰富,不饱扣脂肪酸含量分别占游离脂肪酸总量的55. 57%和48. 42%(以干基计). 对比而言,虾头中脂肪、总糖、蛋白质高于虾壳,分别为虾壳的2. 22倍、1. 69倍和1. 22俄虾头中氨基酸总量及游离脂肪酸总量也明显高于虾壳,分别为虾壳的1. 37倍和2. 96倍;但虾壳中甲壳素含量显著高于虾头,为虾头的2. 00倍;此外,虾壳中钙元素含量极高,占原料干重的19. 6%,比虾头高1.87倍.

Comparative Study of Chemical Compositions of White Shrimp Head and Shell

General chemical compositions,amino acids,fatty acids and minerals of white shrimp head and shell were comparatively studied.The results showed that moisture contents were the highest both in shrimp head and shell,being of 78.44% and 75.15% respectively.And the contents of protein,ash and chitosan were 6.38%,3.62% and 3.33 % respectively in shrimp head,and 5.22%,5.30% and 6.67% respectively in shrimp shell.In shrimp head,the contents of fat,total sugar and total acidity were 2.42%,0.27% and 2.30% respective...