Engineering method for separating and extracting xanthan gum

Abstract

The engineering method for separating and extracting xanthan gum is characterized by that the processes of charging materials, mixing, precipitation, separation and regulation of pH value can be continuously uniformly implemented in a closed mechanical equipment. Said ivnention can maximally prevent the organic solvent from producing volatillization in the course of production, under the normal production condition does not produce explosive gas, and can ensure safe production. As compared with ethyl alcohol precipitation method its alcohol consumption can be reduced by 80%, if after extraction vacuum drying process is adopted the ethyl alcohol consumption can be reduced by 95%. Its product quality is high and stable.

Description

1. Technical field [0001] The invention provides a new engineering method for separating and extracting xanthan gum. This method is applicable to many different xanthan gum extraction processes. 2. Background technology [0002] Xanthan gum (Xanthan gum) is an extracellular acidic heteropolysaccharide produced by the fermentation of Xanthomonas campestris, also known as xanthomonas polysaccharide. As early as 1958, Lilly et al. in the United States had isolated a strain of Xanthomonas phaseolus, which could convert starch into water-soluble viscous polysaccharides. The Peoria laboratory in the northern region of the United States Department of Agriculture first obtained xanthan gum by microbial fermentation in the early 1960s. In 1961, Kelco Company of the United States started semi-industrial production of xanthan gum using Xanthomonas campestris NRRLB-1459, which was mainly used for drilling mud and oil recovery technology of oil wells. It was officially industrialized i...

AI Technical Summary

Problems solved by technology

Therefore, the consumption of organic solvent is very large, accounting for about 25-40% of the production cost, and some production enterprises even reach more than 50% of the production cost.

Not only that, these organic solvents are flammable and explosive dangerous goods, and the large amount of solvent evaporation will increase the risk of explosion and fire at the production site

At the same time, this intermittent and open production leads to large fluctuations in product quality, poor production environment, low efficiency, and high labor intensity.

Although the direct drying method and the enzyme-ultrafiltration-direct drying method can avoid the above problems, the products contain more impurities and poor quality, and their use is limited to a certain extent

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