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Curdlan and extraction process thereof

An extraction process and soluble technology, applied in the field of keratin and its extraction process, can solve the problems of great influence on product quality, destruction of molecular structure, large alkali-containing wastewater, etc., and achieve high product quality, fast treatment speed, and reduced Effects of Soluble Impurities

Pending Publication Date: 2021-04-27
浙江上方生物科技有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The traditional curdlan extraction process adopts the method of alkali dissolution, and then extracts with organic solvents. The process steps are the steps of adding alkali to the fermentation liquid, filtering, solvent extraction, separation and drying. The above process needs to add alkali to dissolve curdlan, In addition, a large amount of alkali-containing wastewater is produced, and the pressure on environmental protection is relatively high. In addition, curdlan gum is kept in a high-pH environment for a long time during operation, which will cause the molecular structure of the product to be destroyed and the molecular weight to be reduced, which will have a great impact on product quality.

Method used

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  • Curdlan and extraction process thereof

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Effect test

Embodiment 1

[0042] like figure 1 As shown, the present embodiment provides a kind of extraction process of curdlan gum, comprising the steps:

[0043] S1, Separation of fermentation broth: first, use a centrifuge with a separation factor of 5100 to conduct preliminary separation and concentration of the fermentation broth, initially remove soluble impurities in the fermentation broth, and obtain a preliminary concentrated fermentation broth;

[0044] S2, washing and concentrating the fermented broth: add water with a conductivity 45 μs / cm three times the volume of the original fermented broth to the separated preliminary concentrated fermented broth, use a centrifuge to perform secondary separation and concentration on the diluted fermented broth, and concentrate until fermentation The solids in the liquid account for the fermented liquid, stop at 15%, further remove the soluble impurities in the fermented liquid, and obtain the water-washed concentrated fermented liquid;

[0045] S3, so...

Embodiment 2

[0049] like figure 1 As shown, the present embodiment provides a kind of extraction process of curdlan gum, comprising the steps:

[0050] S1, Separation of fermentation broth: first, use a centrifuge with a separation factor of 5500 to conduct preliminary separation and concentration of the fermentation broth, and initially remove soluble impurities in the fermentation broth to obtain a preliminary concentrated fermentation broth;

[0051] S2, washing and concentrating the fermented broth: add water with a conductivity 50 μs / cm three times the volume of the original fermented broth to the separated preliminary concentrated fermented broth, use a centrifuge to carry out secondary separation and concentration on the diluted fermented broth, and concentrate until fermented The solids in the liquid account for 10% of the fermentation liquid, and the soluble impurities in the fermentation liquid are further removed to obtain the water-washed concentrated fermentation liquid;

[0...

Embodiment 3

[0056] like figure 1 As shown, the present embodiment provides a kind of extraction process of curdlan gum, comprising the steps:

[0057] S1, separation of fermentation broth: first, use a centrifuge with a separation factor of 5000 to carry out preliminary separation and concentration of the fermentation broth, initially remove soluble impurities in the fermentation broth, and obtain a preliminary concentrated fermentation broth;

[0058] S2, washing and concentrating the fermented broth: add water with a conductivity 48 μs / cm 4 times the volume of the original fermented broth to the separated preliminary concentrated fermented broth, use a centrifuge to carry out secondary separation and concentration on the diluted fermented broth, and concentrate until fermented The solids in the liquid account for the fermented liquid, stop at 5%, further remove the soluble impurities in the fermented liquid, and obtain the water-washed concentrated fermented liquid;

[0059] S3, solven...

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Abstract

The invention provides curdlan and an extraction process thereof. The extraction process comprises the following steps: separating fermentation liquor, washing and concentrating the fermentation liquor, washing with a solvent, separating the solvent and drying materials. According to the extraction process of curdlan provided by the invention, curdlan fermentation liquor is separated and concentrated by adopting a centrifugal machine, and the extraction process is continuous, so that the volume of the fermentation liquor is reduced, and the extraction speed is increased; various soluble impurities in the fermentation liquor are reduced by adopting water washing concentration and organic solvent washing modes, the whiteness and purity of the product are further improved, vacuum drying equipment is adopted as a drying mode, the drying temperature is low, the curdlan is prevented from being influenced by high temperature during drying, and the quality of the curdlan is guaranteed to the maximum extent; and an alkali is not used in the extraction process, the product quality of the curdlan is prevented from being influenced by a high-pH environment, pollution of a large amount of alkali-containing wastewater is avoided, and the method has the characteristics of large material treatment capacity, high treatment speed, high product quality, low production cost and the like.

Description

technical field [0001] The invention relates to the field of extraction technology of curdlan gum, in particular to a kind of curdlan gum and an extraction technology thereof. Background technique [0002] Curdlan gum is an insoluble polysaccharide produced by microbial fermentation. It has the property of heating gel, so it is also called thermal gel. The English name is Curdlan. It can be widely used in the food industry, such as noodle products, vegetarian meat products, meatballs, etc. The traditional curdlan extraction process adopts the method of alkali dissolution, and then extracts with organic solvents. The process steps are the steps of adding alkali to the fermentation liquid, filtering, solvent extraction, separation and drying. The above process needs to add alkali to dissolve curdlan, In addition, a large amount of alkali-containing wastewater is produced, and the pressure on environmental protection is relatively high. In addition, curdlan gum is kept in a hig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B37/02
CPCC08B37/0024C08B37/0003
Inventor 袁淏周长平孙慢慢代祥刘天琪肖志豪
Owner 浙江上方生物科技有限公司
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