The addition of transglutaminase improves the physical quality of extruded fish feed

被引：2

作者：

Wolska, Julia ^{[1
,2
]}

Jonkers, Jan ^{[1
]}

Holst, Olle ^{[2
]}

Adlercreutz, Patrick ^{[2
]}

机构：

[1] Skretting Aquaculture Res Ctr, N-4001 Stavanger, Norway

[2] Lund Univ, Ctr Chem & Chem Engn, Biotechnol, S-22100 Lund, Sweden

来源：

BIOTECHNOLOGY LETTERS | 2015年 / 37卷 / 11期

关键词：

Durability; Fish feed; Physical quality; Transglutaminase; Water stability; MICROBIAL TRANSGLUTAMINASE; PROTEIN;

D O I：

10.1007/s10529-015-1911-4

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

The possibility of improving the physical quality of extruded fish feed using transglutaminase (TGase) treatment at different stages of the production process was investigated. The addition of TGase to the raw material mix and processing under high and medium moisture conditions significantly increased (p > 0.05) the durability, hardness and elasticity of fish feed pellets. However, the water stability of feeds was only improved when the TGase was applied in the vacuum coater; when it was mixed with the dry raw materials, the water stability of the product decreased. By further optimization of the enzyme dose when added to the vacuum coater, an increase in pellet durability was observed at enzyme dosages between 2.5 and 5 g kg(-1). Application of TGase in the coating step allowed an 87.5 % decrease in the dose of enzyme in feed produced under high moisture conditions. TGase treatment improves the physical quality of extruded fish feed, and the importance of optimization of enzyme dosage and processing conditions was demonstrated.

引用

页码：2265 / 2270

页数：6

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