Viscosity reducing agent and preparation method thereof and method for reducing viscosity of fermentation mash

A technology for fermentation mash and viscosity reducing agent, applied in the field of fermentation, can solve the problems of low feasibility and low economic benefit of fermented mash, and achieve the effects of reducing advantages, being suitable for large-scale promotion and use, and having a wide range of sources.

Active Publication Date: 2022-01-11
SUZHOU COFCO BIOCHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a viscosity reducing agent and its preparation method and a method for reducing the viscosity of fermented mash in order to overcome the problems of low economic benefit and low feasibility of reducing fermented mash existing in the prior art

Method used

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  • Viscosity reducing agent and preparation method thereof and method for reducing viscosity of fermentation mash
  • Viscosity reducing agent and preparation method thereof and method for reducing viscosity of fermentation mash
  • Viscosity reducing agent and preparation method thereof and method for reducing viscosity of fermentation mash

Examples

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Embodiment approach

[0041] According to a particularly preferred embodiment of the present invention, the method for preparing the viscosity reducer comprises:

[0042] (1) Dissolve lignin in 0.05-0.5mol / L alkali metal hydroxide solution, then add formaldehyde until the volume concentration of formaldehyde is 0.2-3%, then react at 60-100°C for 30-90min, then adding sulfurous acid with 0.5-5wt% of the total mass of lignin, reacting at 70-90°C for 20-60min, then adjusting the pH of the system to 3-4, then centrifuging, washing, and drying to obtain lignosulfonate;

[0043] (2) Under water-containing conditions, the lignosulfonate and the aluminum source are mixed and dissolved at a mass ratio of 1-4:1 to obtain a mixed solution;

[0044] (3) In the presence of a noble metal catalyst, the mixed solution is subjected to a catalytic reaction at 40-80° C. for 20-50 minutes to obtain a viscosity reducer solution;

[0045] (4) Drying the viscosity reducer solution to obtain the viscosity reducer quality...

preparation example 1

[0050] (1) Dissolve lignin in 0.2mol / L sodium hydroxide solution, then add formaldehyde until the volume concentration of formaldehyde is 1%, and then react at 80°C for 50min to obtain the mixed system A;

[0051] Add sulfurous acid with a total lignin content of 2wt% to the mixed system A, react at 85°C for 30 minutes, then adjust the pH of the system to 3-4, then centrifuge, wash and dry to obtain sodium lignosulfonate, its infrared spectrum Such as figure 1 shown;

[0052] (2) Sodium lignosulfonate and aluminum chloride are stirred and dissolved in water according to the mass ratio of 1.5:1 to obtain a mixed solution;

[0053] (3) Put the mixed solution of step (2) into a shaker, and add a platinum calcium carbonate catalyst into the mixed solution at a shaking speed of 100rpm / min (the concentration of platinum calcium carbonate in the mixed solution is 1wt%) , catalyzed at 75°C for 40 minutes to obtain a viscosity reducer solution;

[0054] Dry the viscosity reducer sol...

preparation example 2

[0057] According to the method of Example 1, the difference is that the molecular weight of lignin is 1000, and the viscosity reducer A2 is obtained.

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Abstract

The invention relates to the field of fermentation technology, in particular to a viscosity reducer and a preparation method thereof and a method for reducing the viscosity of fermented mash. The method for preparing the viscosity reducer comprises: adding lignin and / or lignin The derivative and the aluminum source are mixed and dissolved to obtain a mixed solution; in the presence of a noble metal catalyst, the mixed solution is subjected to a catalytic reaction at 40-80° C. for 20-50 minutes to obtain a viscosity reducer solution. The lignin / aluminum chelate or lignin derivative / aluminum chelate obtained in the present invention has a network structure, which can increase the thickness of the hydration film, prevent the mash components from forming a network structure, and significantly increase the mash fluid Excellent fluidity, achieve the effect of diluting and reducing the viscosity of the mash; and have little effect on the bacteria; wide source, cheap price, and little environmental pollution.

Description

technical field [0001] The invention relates to the technical field of fermentation, in particular to a viscosity reducer, a preparation method thereof and a method for reducing the viscosity of fermented mash. Background technique [0002] When the fermentation substrate cannot be fully decomposed into monosaccharides, there are a large number of substances that cannot be utilized by yeast in the fermentation system. In the later stage of fermentation, the yeast proliferates in large numbers, part of the yeast autolyzes and cracks, produces a large number of metabolites during the fermentation process, and consumes a large amount of monosaccharides such as glucose, all of which will lead to an increase in the viscosity of the fermentation broth. The sharp increase in the viscosity of the mash seriously affects the normal progress of fermentation. The main side effects are: (1) It is difficult for the bacteria to fully contact the fermentation bacteria with the carbon source...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08H7/00C12P7/08
CPCC08H6/00C12P7/08
Inventor 邓衍宏卢久灵汪虎杨培周
Owner SUZHOU COFCO BIOCHEM
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