Preparation and properties of modified chicken,bovine and porcine lung gelatin/carboxymethyl chitosan composite hydrogels
In order to improve the efficiency of livestock and poultry breeding and realize the resource utilization of high value-added livestock and poultry lung,this study used chicken lung,bovine lung,pig lung and carboxymethyl chi-tosan as raw materials.On the basis of the preparation and modification of chicken lung,bovine lung and pig lung gelatin,carboxymethyl chitosan was cross-linked with the modified gelatin of chicken lung,bovine lung and pig lung at 1 ∶ 1,1 ∶ 2 and 2 ∶ 1 volume ratios to prepare compos-ite hydrogels.The physical and chemical properties of the composite hydrogel,such as correlation degree,gel strength,infrared spectrum,swelling property,thermal change characteristics,microstructure and water loss rate,were further analyzed.The results showed that when the volume ratio of carboxymethyl chitosan to modified chicken lung,bovine lung and pig lung gelatin was 1 ∶ 2,the prepared compos-ite hydrogel had the best properties.Among them,the crosslinking degree,gel strength,porosity and water loss rate of the composite hydrogel prepared by carboxymethyl chitosan and modified bovine lung gelatin at a volume ratio of 1 ∶ 2 were 45.4%,5.24 N,64.58%and 87.6%,respectively,which were better than those of the composite hydrogel prepared by carboxymethyl chitosan and modified chicken lung gelatin and modified pig lung gelatin at a volume ratio of 1 ∶ 2.The re-sults of this study provided a new idea for the high value-added resource utilization of livestock and poultry lung.
modified livestock and poultry lung gelatincarboxymethyl chitosanhydrogel
NETL
NSTL
万方数据
维普
