文献类型：期刊文献

英文题名：The antifreeze activity and physicochemical properties of Litopenaeus vannamei head autolysate

作者：Majura, Julieth Joram[1,2];Han, Mei[1,2];Ouyang, Jijing[1,2];Chen, Xiujuan[1,2];Chen, Zhongqin[1,3,4];Tan, Mingtang[1,2,3,4];Gao, Jialong[1,2,3,4];Lin, Haisheng[1,2,3,4];Zheng, Huina[1,2,3,4];Cao, Wenhong[1,2,3,4]

机构：[1]Guangdong Ocean Univ, Coll Food Sci & Technol, Zhanjiang 524088, Peoples R China;[2]Guangdong Prov Engn Technol Res Ctr Seafood, Guangdong Prov Key Lab Aquat Prod Proc & Safety, Zhanjiang 524088, Peoples R China;[3]Guangdong Prov Engn Lab Marine Biol Prod, Zhanjiang 524088, Peoples R China;[4]Shenzhen Inst Guangdong Ocean Univ, Shenzhen 518108, Peoples R China

年份：2023

卷号：58

期号：11

起止页码：6131

外文期刊名：INTERNATIONAL JOURNAL OF FOOD SCIENCE AND TECHNOLOGY

收录：SCI-EXPANDED(收录号：WOS:001068640800001)、、WOS

基金：This work was financially supported by the National Natural Science Foundation of China (Grant No. 32172163) and the Natural Science Foundation of Shenzhen (JCYJ20220530162011026).

语种：英文

外文关键词：Antifreeze peptide; autolysis; correlation analysis; Litopenaeus vannamei; thermal hysteresis activity.

外文摘要：Litopenaeus vannamei heads were autolysed at a constant temperature of 50 degrees C, pH 7.0 for a maximum duration of 5 h, and the antifreeze activity and physicochemical properties of the head autolysates were determined. Thermal hysteresis (TH) was used as an index for determining the antifreeze activity of the shrimp head autolysates. The highest thermal hysteresis activity was 1.82 degrees C which was measured in the 5 h-shrimp head autolysate. The highest negative zeta potential value (-41.06 +/- 2.08 mV) and surface hydrophobicity (295.575 +/- 9.7819) were in the 5 and 1.5 h autolysate groups, respectively. Generally, <2000 Da components accounted for over 85% of the total molecular weight in all shrimp head autolysate groups. Pearson correlation analysis was used to investigate how physicochemical properties influenced the thermal hysteresis index. Although at varying degrees, the analysis confirmed that a positive correlation existed between TH activity and molecular weight, hydrophobic amino acid content, and surface hydrophobicity. A negative correlation existed between TH activity and zeta potential, and hydrophilic amino acids. The findings of our study suggest that Litopenaeus vannamei head autolysate has a potential antifreeze effect and that the physicochemical properties influence its thermal hysteresis.