| 摘要 |
FIELD: food industry. ^ SUBSTANCE: invention relates to food, pharmaceutical, biochemical and processing industry, in particular, to methods for production of a girasol semi-product for subsequent processing. The method envisages washing and preliminary milling of raw material. The produced pulp is heated up to 100C during 30-60 sec. and pressed. The refuses produced after pressing are treated with hot water with a temperature of 80-90C, the mixture water duty being 1:2-3. An enzyme is added to the produced solution and has cellulasic and hemicellulasic activity. The produced juice is combined with that of primary pressing. Then the mixture is momentarily heated up to a temperature of 100C and treated with bentonite and activated carbon (continuously stirred) during 30 minutes. Then the mixture is delivered for subsequent rough filtration. The produced juice is concentrated till dry soluble substances content is no less than 65 wt % to produce concentrated unclarified girasol juice. The produced unclarified concentrate with pulp content no more than 3 wt % is stored either pasteurised in aseptic vessels or unpasteurised in vessels cooled down to a temperature no higher than 10C. For production of concentrated clarified girasol juice after rough filtration the juice is delivered for ultrafiltration through polymer membranes sized 8 kDa, the produced permeate is concentrated till dry soluble substances content is less than 70 wt %. The produced clarified concentrate is stored either pasteurised in aseptic vessels or unpasteurised in vessels cooled down to a temperature no higher than 10C. ^ EFFECT: invention ensures simplification of the process of production of concentrated clarified and unclarified girasol juice with maximal extraction of nutritive and biologically active substances, additionally the invention ensures the concentrates storage life prolongation by no less than 12 months with quality indices preservation. |
