Extraction of caramel pigment from waste liquid of molasses alcohol production

A technology of molasses alcohol waste liquid and caramel pigment, applied in chemical instruments and methods, azo dyes, organic dyes, etc., can solve the problems of low yield of caramel pigment, increase industrial wastewater, affect product quality, etc. The effect of environmental pollution, product quality assurance, and equipment investment reduction

Inactive Publication Date: 2004-07-07
桂林矿产地质研究院 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the yield of its caramel pigment is still low, can only receive about 30% of caramel pigment contained in the alcohol waste mash, and easily contains p

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0024] Example one

[0025] One liter of waste liquid produced after molasses is fermented to produce alcohol is separated by a centrifuge at 4500r / min for 15 minutes, the clear liquid is taken out and filtered with a 1500-mesh screen, and the filtrate is injected into the membrane filter. The membrane is a polyethersulfone uncharged composite ultrafiltration membrane with a molecular weight cut-off of 10000. 0.2MPa filtration, after collecting 910ml of liquid under the membrane, the liquid retained on the membrane is liquid caramel pigment (90ml).

Example Embodiment

[0026] Example two

[0027] The liquid caramel pigment obtained in Example 1 was vacuum dried at 98° C. for 8 hours, and grounded to obtain 12 g of powdered caramel pigment.

Example Embodiment

[0028] Example three

[0029] According to the method of Example 1, the molecular weight cut-off of the ultrafiltration membrane is changed to 3000, and the pressure is 0.35MPa for filtration. 700ml of liquid is collected under the membrane, and the liquid caramel pigment retained on the membrane is 300ml. According to the second embodiment, 45 g of powdered caramel pigment was obtained.

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PUM

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Abstract

A process for extracting the caramel pigment from the molasses alcohol sewage includes such steps as removing insoluble organic substances, ultrafiltering to obtain the liquid caramel pigment, and drying to obtain powdered one. Its advantages are high output rate (more than 90%), agreeable smell, and no environmental pollution.

Description

(1) Technical field: [0001] The invention relates to the field of edible colorings, in particular to a method for extracting caramel coloring from molasses alcohol waste liquid. (2) Background technology: [0002] Caramel color, also known as sauce color, is a reddish-brown or dark-brown liquid jelly, which can also be dried into a solid powder. It is one of the food colorings. It is widely used in soy sauce, vinegar, candy, coffee, canned food, Coloring of beverages, colored wines, cakes, tobacco, roasted meat and lo-mei, medical syrups, etc. The Food and Agriculture Organization of the United Nations, the World Health Organization, the European Union, the U.S. Food and Drug Administration and the my country Food Industry Association have all listed caramel coloring as natural food coloring. In the consumer market, caramel coloring is the most demanded variety of natural food colorings. Japan is the country with the largest use of natural food coloring, with an annual consumptio...

Claims

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Application Information

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IPC IPC(8): C09B61/00
Inventor 扈胜禄孙伟李坚斌刘慧霞张生炎黄伟王玉宾
Owner 桂林矿产地质研究院
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