梭子蟹下脚料酶法制取蛋白水解物最佳工艺的研究

doi:10.7506/spkx1002-6630-201016029

食品科学 ›› 2010, Vol. 31 ›› Issue (16): 139-144.doi: 10.7506/spkx1002-6630-201016029

梭子蟹下脚料酶法制取蛋白水解物最佳工艺的研究

陶学明，王泽南* ，余顺火，张建芬

合肥工业大学生物与食品工程学院

收稿日期:2010-01-19 修回日期:2010-07-10 出版日期:2010-08-25 发布日期:2010-12-29
基金资助:
广东省教育部产学研结合项目(2007A090302090)

Optimization of Enzymatic Hydrolysis of Swimming Crab Waste for Preparing Protein Hydrolysate

TAO Xue-ming，WANG Ze-nan*，YU Shun-huo， ZHANG Jian-fen

School of Biotechnology and Food Engineering, Hefei University of Technology

Received:2010-01-19 Revised:2010-07-10 Online:2010-08-25 Published:2010-12-29

摘要/Abstract

摘要：

采用酶法从梭子蟹下脚料中制取蛋白水解物，并利用单因素试验和正交试验对最佳酶解条件进行研究。结果表明，梭子蟹下脚料最适的水解蛋白酶为碱性蛋白酶；在液料比3:1 时，最适酶解条件为温度55℃、时间3.0h、pH8.5、加酶量(E/S)1000U/g，此时水解度为26.68%，其中温度对水解度的影响最大，其次为加酶量；蛋白水解物的分子量小于10kD，蛋白水解呈味氨基酸含量为412.6mg/L，占氨基酸总量的39.42%，具有很高的营养价值和应用前景。

关键词: 梭子蟹下脚料, 酶解, 蛋白水解物

Abstract:

This study investigated the optimization of the preparation of protein hydrolysate from swimming crab waste (SCW) via enzymatic hydrolysis using single-factor and orthogonal array design methods. Among 6 proteases tested, alkaline protease was found optimum for SCW hydrolysis. The optimum hydrolysis conditions for achieving a maximum degree of hydrolysis were determined as follows: reaction temperature 55 ℃, pH 8.5 and enzyme dosage 1000 U/g for a hydrolysis duration of 3.0 h. Under these conditions, the maximum degree of hydrolysis was up to 26.68%. Hydrolysis temperature had the most important effect on the degree of hydrolysis of SCW, followed by enzyme dosage. The hydrolysis product of SCW was smaller than 10 kD in molecular weight. The total amino acid content in the hydrolysate was 1046.7 mg/L, and the total essential amino acid content was 382.5 mg/L, accounting for 36.54% of the total amino acids, and the total content of 4 major taste amino acids was 412.6 mg/L, accounting for 39.42% of the total amino acids. The protein hydrolysate of SCW has high nutritional value and broad application prospect.

Key words: swimming crab waste, enzymatic hydrolysis, protein hydrolysate

中图分类号:

TS 254.9

陶学明，王泽南*,余顺火，张建芬. 梭子蟹下脚料酶法制取蛋白水解物最佳工艺的研究[J]. 食品科学, 2010, 31(16): 139-144.

TAO Xue-ming，WANG Ze-nan*，YU Shun-huo， ZHANG Jian-fen. Optimization of Enzymatic Hydrolysis of Swimming Crab Waste for Preparing Protein Hydrolysate[J]. FOOD SCIENCE, 2010, 31(16): 139-144.

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梭子蟹下脚料酶法制取蛋白水解物最佳工艺的研究

Optimization of Enzymatic Hydrolysis of Swimming Crab Waste for Preparing Protein Hydrolysate

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