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How disodium succinate hexahydrate is applied
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Release time：2016/3/23 16:46:33
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The toxicity of disodium succinate on aquatic organisms has been studied in three freshwater species belonging to three trophic levels. The toxicity tests were conducted using disodium succinate hexahydrate instead of the test substance because disodium succinate hexahydrate is not different to the test substance in aqueous solution and disodium succinate is stable as hexahydrate.
Some bacteria, such as A. succiniciproducens, utilized in fermentation processes as outlined in U.S. Pat. No. 5,143,834 to Glassner et al., naturally produce succinic acid in moderate yields. However, this host organism converts at most 1 mole of carbohydrate to 1.33 moles of succinate and 0.67 moles of acetate. Production of the acetate co-product illustrates that one-third of the expensive glucose is not converted to succinate. Furthermore, the A. succiniciproducens host strain has been shown to be not highly osmotolerant in that it does not tolerate high concentrations of salts and is further inhibited by moderate concentrations of product. Lastly, A. succiniciproducens presents handling problems in that as an obligate anaerobe, procedures using the organism must be done in the absence of oxygen. Also, medium preparation for the inoculum requires the addition of tryptophan and also requires the mixing of four different solutions, one of which contains corrosive and toxic H2 S.
A need exists in the art for a fermentation process to economically produce high amounts of carboxylic acids, such as succinic acid, malic acid and fumaric acid. The process should utilize low cost nutrients and substrates yet provide for high fermentation rates. To effect such a process, an osmotolerant, well-characterized facultative bacterial host is required to yield desired product in up to a 2:1 molar ratio of product-to-growth substrate.
Almost infinite esters can be obtained from carboxylic acids. Esters are produced by combining an acid with an alcohol and removal of a water molecule. Carboxylic acid esters are used in a variety of direct and indirect applications.Lower chain esters are used as flavoring base materials, plasticizers, solvent carriers and coupling agents. Higher chain compounds are used as components in metalworking fluids, surfactants, lubricants, detergents, oiling agents, emulsifiers, wetting agents, textile treatments and emollients.
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