Preparation, Structural Characterization, and Stability of Low-Molecular-Weight Collagen Peptides-Calcium Chelate Derived from Tuna Bones.

ABSTRACT: This study was conducted to prepare calcium chelate of low-molecular-weight tuna bone collagen peptides (TBCP_LMW) with a high chelation rate and to identify its structural characteristics and stability. The optimum conditions for calcium chelation of TBCP_LMW (TBCP_LMW-Ca) were determined through single-factor experiments and response surface methodology, and the calcium-chelating capacity reached over 90% under the optimal conditions. The amino acid compositions implied that Asp and Glu played important roles in the formation of TBCP_LMW-Ca. Structural characterizations determined via spectroscopic analyses revealed that functional groups such as -COO^-, N-H, C=O, and C-O were involved in forming TBCP_LMW-Ca. The particle size d

SUBMITTER: Zhong Y 

PROVIDER: S-EPMC10530123 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature