Method of preparing edible gelatin with combined zyme

Abstract

The invention provides a method using combined degradation ossein adopting prolease of different specificities in sequence for zymolysis to prepare edible gelatine. The detailed procedure is that: marinating the ossein washed by dipping into acid water of the traditional lie wash technics into water for 2h to 3h, adding acid protease with the quality of dry ossein achieves to 1 per mill to 3 per mill after oil removal and conducting the first deterioration 2 to 5 when the temperature is 55 DEG C. to 60 DEG C.; raising mucus, filtering and drying after sterilizing enzyme with high temperature, thus achieving the dry gelatin; then adding water in the remained ossein, adjusting the solution reacted with the PH reaches to 4 to 8 by using alkali; then adding neutral or alkaline protease with the quality of the original dry ossein as 2 to 3 per mill and conducting the second deterioration with the temperature of 55 to 60 DEG C.; then raising mucus, filtering and drying after sterilizing enzyme with high temperature, thus achieving the dry gelatin. The ossein consumption for the first zymohydrolysis of the invention achieves 60 per cent per cent to 80 per cent and the viscosity of the glutin obtained is 2.3 mPa is multiplied by s and the bloom is 139 Bloom g; while the ossein consumption for the second zymohydrolysis of the invention achieves 15 to 30 per cent with the viscosity reaches to 3.4 mPa is multiplied by s and bloom of 101 Bloom g. Only little amoune of soft ossein dregs without viscosity are remained after boiled the remained ossein.

Description

technical field [0001] The invention relates to a method for preparing gelatin, in particular to a method for preparing edible gelatin by using combined enzymes to degrade bone collagen. Background technique [0002] While the digital age is impacting photographic gelatin, the market demand for pharmaceutical and edible gelatin is gradually expanding; at the same time, more and more attention has been paid to the functionality and safe use of gelatin, which inevitably requires further improvement of gelatin quality. improve. In the prior art, the production cycle of the alkaline process is long, the liming process is as long as 40 to 60 days, the production efficiency is low, the environmental pollution is more serious, and the specificity of the produced gelatin products is not strong, except for edible gelatin. The largest share is photographic gelatin and medicinal gelatin, which is quite restrictive for the preparation of edible gelatin. The acid process is mostly used...

AI Technical Summary

Problems solved by technology

[0004] Chinese patent CN1473901A discloses a method for preparing gelatin by using a single enzyme to degrade degreasing and non-demineralized bone paste. Degreasing without demineralization reduces the pickling process and saves water resources, but the process of grinding aggregates into bone paste is relatively traditional. The preparation of bone particles increases the cost; and the degradation of a single enzyme, the degradation of bone gelatin protein is not complete, and the remaining bone residue needs to be returned to the reaction pot for re-extraction, which may affect the quality of subsequent gelatin