Due to its galacturonic acid carboxyl groups with different degrees of methyl esterification, pectin is divided into high- methoxyl pectin and low-methoxyl
pectin. Low-methoxyl-pectin forms a gel by galacturonic acid chains and Ca2+ intermolecular crosslinking. In plants, interact between pectin and protein that includes hydroxyproline rich, through covalent bond to make its emulsifying characteristics. In food systems, due to interaction between pectin and protein, the stability of the protein was improved. Since pectin has excellent protein stabil- ity, and collagen is rich in hydroxyproline, therefore, in this study, low-methoxyl-pectin was introduced to collagen–hydroxyapatite composite system; collagen- hydroxyapatite/pectin composites were prepared successfully. The testing and evaluation of its per- formance were conducted. Results show that the composite has structural characteristics of natural bone and good cell compatibility, is a quite promising substitute material for bone tissue.
Due to its galacturonic acid carboxyl groups with different degrees of methyl esterification, pectin is divided into high- methoxyl pectin and low-methoxyl pectin. Low-methoxyl-pectin forms a gel by galacturonic acid chains and Ca2+ intermolecular crosslinking. In plants, interact between pectin and protein that includes hydroxyproline rich, through covalent bond to make its emulsifying characteristics. In food systems, due to interaction between pectin and protein, the stability of the protein was improved. Since pectin has excellent protein stabil- ity, and collagen is rich in hydroxyproline, therefore, in this study, low-methoxyl-pectin was introduced to collagen–hydroxyapatite composite system; collagen- hydroxyapatite/pectin composites were prepared successfully. The testing and evaluation of its per- formance were conducted. Results show that the composite has structural characteristics of natural bone and good cell compatibility, is a quite promising substitute material for bone tissue.
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