Abstract:In order to study the anti-ultraviolet radiation effect and physicochemical properties of tilapia fish scale collagen composite gel. In this paper, three coagulants were used to form a composite gel with fish scale collagen, and the effects of coagulant on its anti-ultraviolet radiation and physical and chemical properties were studied. The results show that the absorbance of the gel decreases with the increase of the quality of the curdlan. After exposure to UV light for 300 s, the survival rates of Escherichia coli under the protection of collagen and gelatin, agar and curdlan gel were 0, 46.43%± 0.75%, 33.28%± 0.75%, 62.06%± 0.75%, respectively. Therefore, it is best to obtain the anti-ultraviolet radiation effect of the curdlan composite gel. The type and quality of the coagulant have a significant effect on the hardness, gumminess and resilience of collagen. Scanning electron microscopy showed that the Therefore, it is best to obtain the anti-ultraviolet radiation effect of the curdlan can be effectively combined with collagen to form a stable structure. By determining the viscoelasticity of the collagen gel by the rheological method, it is found that the gel elastic modulus G' and the viscous modulus G" formed by the curdlan are larger, and the influence of time and temperature changes is small. The research results provide a scientific basis for the study of the anti-radiation effect of tilapia fish scale collagen composite gel material.
