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Technology of enzymatic-acid hydrolysis of bone raw material in production of gelatine

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Bone gelatin is an important and irreplaceable item widely used in the food industry and pharmaceutical production; it is also widely used in tissue engineering and other spheres. Due to widespread use of gelatin it is necessary to search for new safe and effective technologies for bone gelatin production. This research represents the results of enzymatic-acid hydrolysis of raw material in the process of gelatin production. The article presents the results of hydrolysis analyzes, the results of the main quality parameters of the obtained gelatin samples; and the major technological scheme for gelatin production is proposed here. As result of developed technology of enzymatic-acid hydrolysis of bone raw material with the ratio of raw material mass to the volume of solvent (HCl 1M and pepsin with an enzymatic activity of 40 units) as 1:9, duration of exposure: 180 minutes (3 hours), at the stage of demineralization, liming and de-ashing, we obtained samples of gelatin at yield rate of 12.1% from the initial mass of raw materials, which is 6.9% higher in comparison with the lowest yield of gelatin according to the proposed schemes. It is shown that the samples have a high protein mass fraction 91.4%, and a low fat mass fraction 0.4%, the obtained results indicate the high technological qualities of the obtained gelatin sample, this is also confirmed by high strength of gel according to Bloom scale, which value varies within the range of 290 ± 0.7 units.

About the Author

R. A. Voroshilin
Kemerovo State University
Russian Federation

 candidate of technical sciences, senior lecturer, Department of Animal Products Technology

6, Krasnaya str., 650000, Kemerovo, Russia

Tel.: +7–923–493–47–95


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For citation:

Voroshilin R.A. Technology of enzymatic-acid hydrolysis of bone raw material in production of gelatine. Theory and practice of meat processing. 2021;6(3):279-284.

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