Optimization of Extraction Conditions for Pig Bone Gelatin

In this paper,the extraction of pig bone gelatin was investigated.Through single factor experiment,the effects of extraction pH and temperature on extraction yield,gel strength and viscosity of swine gelatin were studied.By SDS-PAGE,the hydrolysis of collagen was monitored and the optimum pH and extraction time were determined.The best extraction pH,extraction temperature,and extraction time were 10.5,70℃,and 5 h,respectively,under which the extraction rate of gelatin,the gel strength and the viscosity of 6.67%gelatin solution were of 54%,576 g,and 11.2 mPa·s(60℃),respectively.