鱼糜加工废弃水回收蛋白营养与品质分析

Nutrition and Quality Analysis on Recycling Protein from Surimi Processing Wastewater

实验前期采用三氯化铁絮凝法(三氯化铁添加到鱼糜废弃水中的量为0.13 g/L)对鱼糜加工废弃水中的蛋白质进行了回收,本文对该回收蛋白进行一般成分、氨基酸和重金属分析,最终进行蛋白质品质评价。结果表明:回收蛋白干物质中蛋白质、脂肪和灰分含量分别为78.23%、16.46%和4.7%;必需氨基酸占氨基酸总量的比例为38.81%,必需氨基酸与非必需氨基酸的比例为63.43%,必需氨基酸指数(EAAI)为68.21,其构成符合FAO/WHO标准模式;第一限制氨基酸为异亮氨酸;残留重金属未超标,综合分析是一种优质蛋白质。

The protein from the surim processing wastewater has been recovered by ferric chloride before the experiment. This article continues to analysis the general component、amino acids、heavy metals of the recovery protein , and then protein quality evaluation is executed. The results show that：the content of the recovery protein in the dry matter about protein , fat and ash is 78.23%, 16.46%and 4.7%, The essential amino acids makes up 38.81 % of the total amino acids. The essential amino acids makes up 63.48 % of non-essential amino .The essential amino acids index（EAAI） is 68.21, which is with the FAO/WHO standard mode. The first limiting amino acid is isoleucine. The residues of Fe3＋,Cl-and heavy metals were not excessive. The recovery protein is a high-quality protein .