Preparation, Characterization and Stability of Calcium-Binding Peptides Derived from Chicken Blood
文献类型： 外文期刊
作者： Yang, Jing 1 ; Shi, Jing 2 ; Zhou, Ying 3 ; Zou, Ye 2 ; Xu, Weimin 2 ; Xia, Xiudong 2 ; Wang, Daoying 1 ;
作者机构： 1.Minist Sci & Technol, Jiangsu Key Lab Food Qual & Safety, State Key Lab Cultivat Base, Nanjing 210014, Peoples R China
2.Jiangsu Acad Agr Sci, Inst Agriprod Proc, Nanjing 210014, Peoples R China
3.Xizang Univ Agr & Anim Husb, Coll Food Sci, Nyingchi 860000, Peoples R China
关键词： chicken hemoglobin peptides; calcium-binding capacity; characterization; stability
期刊名称：FOODS （ 影响因子：4.7； 五年影响因子：5.1 ）
ISSN：
年卷期： 2024 年 13 卷 15 期
页码：
收录情况： SCI
摘要： Calcium-binding peptides have gained significant attention due to their potential applications in various fields. In this study, we aimed to prepare, characterize, and evaluate the stability of calcium-binding peptides derived from chicken blood. Chicken hemoglobin peptides (CPs) were obtained by protease hydrolysis and were applied to prepare chicken hemoglobin peptide-calcium chelate (CP-Ca). The preparation conditions were optimized, and the characteristics and stability of CP-Ca were analyzed. The optimal chelating conditions were determined by single-factor and response surface tests, and the maximum calcium ion chelating rate was 77.54%. Amino acid analysis indicated that glutamic acid and aspartic acid motifs played an important role in the chelation of the calcium ions and CP. According to the characterization analysis, CP-Ca was a different substance compared with CP; calcium ions chelated CPs via the sites of carbonyl oxygen, carboxyl oxygen, and amino nitrogen groups; and after the chelation, the structure changed from a smooth homogeneous plate to compact granular. The stability analysis showed that CP-Ca was stable at different temperatures, pH, and gastrointestinal conditions. The study indicates that chicken blood is a promising source of peptide-calcium chelates, providing a theoretical basis for application in functional foods and improving the utilization value of chicken blood.
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