Properties of the Konjac Glucomannan and Silk Fibroin Peptide Blend Sol

Key words: 
• konjac glucomannan /
• silk fibroin peptide /
• blend sol /
• rheological properties

Abstract: Konjac glucomannan/silk fibroin peptide blend sols were prepared at different ratios by using physical blending method,and their rheological properties were analyzed by using the rheometer. Silk fibroin peptide was extracted and purified from the silkworm cocoon after degumming,dissolution and dialysis and then prepared after enzymolysis. The silk fibroin peptide was used to blend with konjac glucomannan（ KGM） at different ratios to prepare KGM/silk fibroin peptide（ SP） sols,and the properties of the KGM/SP blend sols were then determined through viscosity test,shock test and dynamic analysis. The blend sols were a pseudo plastic fluid with shear thinning behavior. The viscosity of the blend sols increased with the proportion of the konjac glucomannan in the blend sols. The KGM/SP blend sols prepared at the volume ratio of 2 ︰ 1 had the lowest frequency at the intersection of the elastic modulus and the loss modulus and was hence the most stable.