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Production method of curdlan by dissolvant method abstraction

A production method, a technology of solvent method, applied in the field of post-extraction production technology of curdlan gum, can solve the problems of difficult salt removal, difficult realization of gel press water removal method, low product purity, etc., and achieve high product purity , Improve the purity and appearance quality, and the effect of good appearance

Inactive Publication Date: 2008-10-15
SHANDONG FOOD & FERMENT IND RES & DESIGN INST
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  • Claims
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Problems solved by technology

Although the cost of this method is low, the formation of gel in the production process makes the removal of salt very difficult, resulting in very low product purity, and the method of gel pressing to remove water is difficult to realize in industrial production

Method used

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  • Production method of curdlan by dissolvant method abstraction

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example 1

[0014] Below by example in conjunction with accompanying drawing the processing method of invention is further described:

[0015] 1. Curdlan gum fermentation broth comes from the previous existing process, and 3m 3 Curdlan gum fermentation broth (the curdlan gum content is about 2.4g / 100ml) is filtered through a plate frame to remove soluble impurities in the curdlan gum fermentation broth (such as fermentation by-product water-soluble polysaccharides, organic acids and Inorganic salts, etc.), the filtrate is anhydrous, and the obtained filter residue enters the batching tank and adds water to a volume of 1.5m 3 , to form a suspension after stirring; then pump into 10m 3 In the dehydration tank, start stirring, then pump into the NaOH solution with a molar concentration equal to that of the suspension to be 1mol / L from the lye storage tank, and stir to dissolve the curdlan to obtain the alkali solution of the curdlan. Pump the alkaline solution into the dehydration tank, sl...

example 2

[0019] 1. Curdlan gum fermentation broth comes from the previous existing process, and 3m 3 Curdlan gum fermentation broth (wherein curdlan gum content is about 2.4g / 100ml) is filtered through a plate frame to remove soluble impurities in curdlan gum fermentation broth, the filtrate is anhydrous, and the obtained filter residue enters the batching tank and adds water to a volume of 1.5m 3 , to form a suspension after stirring; then pump into 10m 3 In the dehydration tank, start stirring, then pump into the NaOH solution with a molar concentration equal to that of the suspension to be 1mol / L from the lye storage tank, and stir to dissolve the curdlan to obtain the alkali solution of the curdlan. The alkaline solution is pumped into the dehydration tank, slowly add 4m 3 About 88% (v / v) of isopropanol, stir evenly, let stand to stratify, open the overflow valve on the wall of the dehydration tank from top to bottom in turn, flow out the low-concentration organic solvent, that i...

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Abstract

The invention provides a solvent method for extracting and making curdlan, relating to the purification and extraction as well as production technique of curdlan products. The technical proposal is as follows: (1) an organic solvent such as alcohol and isopropanol is taken as a dehydrating agent to dehydrate the curdlan aqueous alkali, the gel phenomenon does not exist in the production process, thereby being easy to remove water, salinity and pigment; (2) after the curdlan and the organic solvent are mixed, the solid and liquid are separated by adopting the layered overflow way; (3) the organic solvent is applied for a plurality of times to extract the curdlan with a plurality of times of dehydration. The method adopts the organic solvent method to purify and extract as well as produce the curdlan, and has an extracting yield more than 90 percent; the product has high purity quotient and good quality; the production process can realize the serialization and the automation.

Description

technical field [0001] The invention relates to an industrialized production method of curdlan, in particular to a post-extraction production process of curdlan. Background technique [0002] Curdlan gum (Curdlan), also known as thermal coagulation polysaccharide and thermal gel, is a special microbial polysaccharide, which is connected by β-1,3-glucosidic bonds, and its molecular weight is generally 75000-80000D. It belongs to the category of low-viscosity polysaccharides, insoluble in water, and safe for human body. Heat-coagulated polysaccharides have a wide range of uses, and can be used as food additives in the food industry to improve the characteristics of various foods. In addition, it is also widely used in feed, building materials, medicine, biotechnology and oil field development. In particular, the chemically modified thermal gel can be used as a drug for the treatment of AIDS. In 1996, the FDA of the United States approved its use in food ingredients as a foo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B37/00
Inventor 兰文忠董学前赵双枝严希海吉武科苏理
Owner SHANDONG FOOD & FERMENT IND RES & DESIGN INST
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