Gelatin is a biopolymer that can be obtained from the partial hydrolysis of collagen skin tissue of chicken leg. This study aims to utilize gelatin of chicken leg skin in combination with soy protein isolate (SPI) as raw material for edible film production. The experiment was initiated by extracting...
Gelatin is a biopolymer that can be obtained from the partial hydrolysis of collagen skin tissue of chicken leg. This study aims to utilize gelatin of chicken leg skin in combination with soy protein isolate (SPI) as raw material for edible film production. The experiment was initiated by extracting gelatin and edible film was prepared by mixtures of SPI in ethanol solution and gelatin solution (containing 1% chitosan, w/v) with different weight ratio for SPI : gelatin (1:1, 1:2, 1:3, 1:4, and 1:5) then heated at 70 °C for 45 min and added 10% glycerol. Furthermore printed and dried in oven for 24 h at 60 °C. The yield of preparation of gelatin from chicken leg skin was obtained about 40.3%. Higher concentration of gelatin in solution gives a transparent color and smooth surface of edible film. Base on mechanical properties analysis, the composition of 1:3 has the best result of tensile strength and elongation at break about 4.80 MPa and 113.37%, respectively. The antibacterial activity test showed low antibacterial activity with a 0.3 cm inhibit zone.
Gelatin is a biopolymer that can be obtained from the partial hydrolysis of collagen skin tissue of chicken leg. This study aims to utilize gelatin of chicken leg skin in combination with soy protein isolate (SPI) as raw material for edible film production. The experiment was initiated by extracting gelatin and edible film was prepared by mixtures of SPI in ethanol solution and gelatin solution (containing 1% chitosan, w/v) with different weight ratio for SPI : gelatin (1:1, 1:2, 1:3, 1:4, and 1:5) then heated at 70 °C for 45 min and added 10% glycerol. Furthermore printed and dried in oven for 24 h at 60 °C. The yield of preparation of gelatin from chicken leg skin was obtained about 40.3%. Higher concentration of gelatin in solution gives a transparent color and smooth surface of edible film. Base on mechanical properties analysis, the composition of 1:3 has the best result of tensile strength and elongation at break about 4.80 MPa and 113.37%, respectively. The antibacterial activity test showed low antibacterial activity with a 0.3 cm inhibit zone.
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