Abstract
Crucian carp eggs are abundant in sialoglycoprotein, and these compounds are potential renewable sources of food, cosmetics, and medicine. In this study, the purification, N-glycan release, structure, and biological activity of carp egg glycoproteins (CcSGP) were studied. Results showed that CcSGP primarily had molecular weights of 97, 27, and 22 kDa. Based on MALDI-TOF mass spectrometry, most N-glycans assumed a double-antenna bifurcated structure. The terminal sialic acid was bound to galactose, and N-acetyl-d-galactosamine molecules were located at the glycan terminal. Bioactivity analysis showed that CcSGP prevented calcium phosphate precipitation and had scavenging ability for some DPPH free radicals. Coagulation experiments and rabbit wound-healing tests showed that CcSGP had procoagulant activity. Overall, the results indicated the potential use of CcSGP as an ingredient for functional foods and wound-dressing materials.
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