Method for extracting active ingredients in threonine fermentation concentrate

Abstract

The invention provides a method for extracting active ingredients in threonine fermentation concentrate. Waste can be turned into treasure through the method. The method comprises the key points of: adding an extractant ethanol at a mass ratio of 10-150% into the threonine fermentation concentrate, wherein the purity of the extractant ethanol is analytical pure; performing stirring at a medium speed for 5-30 min so as to achieve thorough mixing of the concentrate with the extractant, and putting the mixture in a thermostatic water bath at 20-50 DEG C, wherein the placing extraction time is 0.5-8 h; performing laboratory suction filtration with 200 mesh polyester filter cloth as a filter medium, retaining a filter cake, and drying the filter cake. The method has the advantages that: the waste can be turned into treasure, produced inorganic salts are subjected to a recrystallization process so as to obtain ammonium sulfate of a certain mass, and the obtained ammonium sulfate can be soldon the market; after extract liquid is subjected to simple distillation treatment, the extractant can be recovered greatly, the remaining organic matter which contains water can be used after drying is conducted, and on the other hand, emission of harmful matter can be reduced so as to protect the environment.

Description

technical field [0001] The invention relates to a method for extracting active ingredients from amino acid fermentation tail liquid. Background technique [0002] Amino acid fermentation tail liquid is the remaining fermentation liquid after extracting the product amino acid in the amino acid industrial production process, including the threonine fermentation concentrated liquid, which contains a considerable amount of free amino acid after multi-effect evaporation. , sugar, soluble protein and other organic components, and contains a certain amount of inorganic salt components, it is an amino acid organic resource with recycling value. However, because it is doped with inorganic salts (mainly ammonium sulfate), and the organic matter in the original concentrated solution is mostly high value-added threonine, soluble protein and sugar, it is impossible to realize the efficient utilization of this type of organic matter. Stripping enables efficient implementation of the resp...

AI Technical Summary

Problems solved by technology

However, because it is doped with inorganic salts (mainly ammonium sulfate), and the organic matter in the original concentrated solution is mostly high value-added threonine, soluble protein and carbohydrates, it is impossible to realize the efficient utilization of this type of organic matter. Stripping enables efficient implementation of respective utilization pathways

The threonine fermentation concentrate contains a large amount of soluble suspended matter, its particle size is extremely small, and its viscosity is large, so the solid-liquid separation cannot be achieved by general filtration.

The threonine concentrated tail liquid adopts the method of direct pressure filtration to separate the following three problems. First, the inorganic salt and organic matter cannot be completely separated by conventional filtration. Second, the organic matter of the filter cake cannot be retained by conventional industrial-grade filter media. Third, It is difficult to press filter with a large mesh filter medium, because its high viscosity leads to the clogging of the filter medium

Its COD is as high as 307000mg / L, and the treatment effect of coagulation and sedimentation is not significant

At present, the general manufacturers use Sinotrans and merge it into the landfill leachate treatment facility to dispose of it. However, this treatment method not only causes environmental pollution, but also causes waste of resources and loss of economic benefits.

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