Abstract Protein glycosylation results in structural changes which affects its functionalities. In this study, myofibrillar protein (MP) from pale, soft and exudative (PSE)-like chicken breast meat was grafted onto the… Click to show full abstract
Abstract Protein glycosylation results in structural changes which affects its functionalities. In this study, myofibrillar protein (MP) from pale, soft and exudative (PSE)-like chicken breast meat was grafted onto the glucosamine (GlcN) backbone using microbial transglutaminase (MTGase) as a biocatalyst and the impacts of glycosylation on structural and solubility properties of the conjugation product were investigated. The covalent attachment was verified by HPLC and Fourier transform infrared spectroscopy (FT-IR). The optimal conjugation conditions were 37 °C at pH 7.5 for 6 h with a MP to GlcN weight ratio of 1:3. The results of secondary structure analysis suggested that the glycosylated MP had decreased α-helix level and increased β-sheet, β-turns and random coil levels. After glycosylated with GlcN, the surface hydrophobicity was significantly reduced and the solubility of MP at the isoelectric point was markedly improved (P
               
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