Title: Process for preparing gelatin from enzyme degradation bone collagen
Application Number: 02125447 Application Date: 2002.08.08
Publication Number: 1473901 Publication Date: 2004.02.11
Approval Pub. Date: Granted Pub. Date: 2005.04.13
International Classifi-cation: C09H3/00,C09H1/02
Applicant(s) Name: Inst. of Physics Address: 100101
Inventor(s) Name: Chen Lijuan, Wang Ying
Attorney & Agent: li bai
Abstract:
     The present invention relates to gelatin preparation, and is especially the enzyme degradation process of preparing gelatin with bone collagen. The process includes milling the mixing of defatted bone material and water into bone slurry with bone size of 1-5 mm; regulating pH value to 1.5-4 with acid or to 7-8 with alkali and adding acid or alkali proteinase in 0.2-0.8 wt% of bone slurry to control the degradation of collagen; reaction at room temperature for 7-10 hr, regulating pH 5.0-6.5 with alkali or acid and heating to 70-85 deg.c for extraction; separating the turbid gelatin obtained via extraction; filtering gelatin liquid to obtain high purity hard capsule gelatin solution. The dried gelatin has molecular weight distribution of alpha=48 % and beta=18 %; gelatin jelly strength over 240 g; viscosity 3.0 mPs; transparency 90 % at 620 nm and 71 % at 450 nm.
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