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Viscosity reducer, preparation method of viscosity reducer and method for reducing viscosity of fermented mash

A kind of technology of fermentation mash and viscosity reducing agent

Active Publication Date: 2021-06-22
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 reducer, preparation method of viscosity reducer and method for reducing viscosity of fermented mash
  • Viscosity reducer, preparation method of viscosity reducer and method for reducing viscosity of fermented mash
  • Viscosity reducer, preparation method of viscosity reducer and method for reducing viscosity of fermented mash

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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) Dissolving lignin in 0.05-0.5mol / L alkali metal hydroxide solution, then adding formaldehyde until the volume concentration of formaldehyde is 0.2-3%, then reacting 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 according to 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 viscosi...

preparation example 1

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

[0051] Add sulfurous acid with a total lignin content of 2wt% to the mixed system A, react at 85°C for 30min, 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 a mass ratio of 1.5:1 to obtain a mixed solution;

[0053] (3) The mixed solution of step (2) is put into a shaking table, and at a shaking speed of the shaking table is 100rpm / min, a platinum calcium carbonate catalyst is added in the mixed solution (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;

[0...

preparation example 2

[0057] According to the method of Example 1, the difference is that the mass ratio of lignosulfonate to alumina is 0.8:1 to obtain viscosity reducer powder A2 (aluminum lignosulfonate).

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Abstract

The invention relates to the technical field of fermentation, and in particular, relates to a viscosity reducer, a preparation method of the viscosity reducer and a method for reducing the viscosity of fermented mash, wherein the preparation method of the viscosity reducer comprises the steps: mixing and dissolving lignin and / or a lignin derivative and an aluminum source under a water-containing condition to obtain a mixed solution; and in the presence of a noble metal catalyst, carrying out catalytic reaction on the mixed solution for 20-50 min at the temperature of 40-80 DEG C, and thus obtaining a viscosity reducer solution. The obtained lignin / aluminum chelate or lignin derivative / aluminum chelate has a network structure, the thickness of a hydration film can be increased, mash components are prevented from forming the network structure, the flowing property of mash fluid is obviously improved, and the effect of diluting and reducing the viscosity of mash is achieved; the influence on strains is small; the source is wide, the price is low and the environmental pollution is small.

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 available car...

Claims

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Application Information

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Patent Type & Authority Applications(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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