文献类型：期刊文献

英文题名：Release principle of peptides and amino acids during the autolysis of shrimp head from Litopenaeus vannamei after UV-C irradiation stress

作者：Cao, Wenhong[1,2,3];Tian, Shen[1];Wang, He[1];Zhang, Chaohua[1,2,3];Yuan, Jianjun[4,5]

机构：[1]Guangdong Ocean Univ, Coll Food Sci & Technol, Zhanjiang 524088, Peoples R China;[2]Guangdong Prov Key Lab Aquat Prod Proc & Safety, Zhanjiang, Peoples R China;[3]Prov Engn Lab Marine Biol Prod, Zhanjiang, Peoples R China;[4]Quanzhou Normal Univ, Coll Oceanol & Food Sci, Quanzhou, Fujian, Peoples R China;[5]Fujian Prov Key Lab Dev Bioact Mat Marine Algae, Quanzhou 362000, Fujian, Peoples R China

年份：2020

卷号：8

期号：1

起止页码：170

外文期刊名：FOOD SCIENCE & NUTRITION

收录：SCI-EXPANDED(收录号：WOS:000500535400001)、、WOS

基金：This work received special funds from the National Natural Science Foundation of China (Grant No. 41576151).

语种：英文

外文关键词：autolysis; kinetics; Litopenaeus vannamei; peptides release; shrimp head

外文摘要：UV-C irradiation can activate endogenous enzymes in the body of many aquatic animals. Autolysis kinetics of shrimp head after UV-C irradiation stress was investigated. During the first 5 hr of autolysis, the release of the autolysis products was in line with the first-order equations of the reaction rate: Y = 37.681e(-0.173t), Pe = -1.769Y + 74.156, and TP = -1.5117Y + 60.866. A good linear correlation was founded between the release of total protein and that of products with molecular weight of 3,000 Da after these products associated with residual total protein were autolyzed. In contrast to the inconsistent effect of substrate concentration on autolysis rate constants, the effects of pH and temperature on the autolysis rate constants of shrimp head showed a consistent pattern. An Arrhenius equation (lnKa = 8,090.2/T - 26.497) was established to validate the proposed autolysis kinetic equations. The autolysis rate of products with molecular weight < 3,000 Da increased rapidly from 0 hr to 3 hr. The aliphatic amino acids showed a higher amount release than that of other amino acids during the autolysis. The amounts of released heterocyclic amino acids (Trp and His) were also much more than that of other amino acids.