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Succinate and principal uses

Succinate is a priority chemical target for biosynthesis. It can be used to make non-corrosive products for the airport uses, solvents without toxicity, through plastics, pharmaceuticals and food additives. Succinate is also a priority because some bacteria produce it naturally, so we have a metabolic starting point for large scale fermentation (Luque, 2012).  

 

Succinate is a priority product because some bacteria produce it naturally, so we have a metabolic starting point for large-scale fermentation. Succinic acid (butanedioic acid), is a diprotic, dicarboxylic acid with chemical formula C4H6O4. It is a water-soluble, colorless crystal with an acid taste. The name derives from Latin “succinum”, meaning amber, from which the acid was originally obtained by pulverising and distilling it using a sand bath. It is produced naturally as a product of cellular metabolism. In the chemical industry, it also plays an important role, being a key intermediate component for various products and processes (D. Morán, 2015).


Metabolic engineering incorporates a variety of academic fields to generate high production systems for desired, and largely commercial, products. Many of these products are expensive to produce because the downstream processing and purification is often very complex. High value products such as succinate, ethanol, and lactate are produced from glucose in Escherichia coli, via the anaerobic central metabolic pathway (Dittrich, 2005).


For example, in the industry the succinate is obtaining by biotechnology, same to Bioamber corporation which producer of chemical intermediates that uses sugars instead of fossil fuels and sells competitively priced, sustainable chemicals with strong profit margins and the cleanest environmental footprint in the industry. 

Figure 7. Succinic acid production. (Bioamber, 2008)

According to Morán  (2015) the biobased compound is absolutely identical with the product manufactured conventionally, so it has the same properties and applications. There is a multitude of potential uses for succinic acid:

 

  • Polybutylene Succinate (PBS) production. It is one of the newest biopolymers under development for numerous applications worldwide (mulch films, disposable cups, plastic bags).

  • Plasticizers production for PVC manufacture. It can also be used to meet the growing demand for plasticizers for biobased plastics.

  • Replace petrochemical-based adipic acid in the production of polyester polyols for polyurethanes (adhesives, coatings, sealants, shoe soles, flexible and rigid foams).

  • 1,4-Butanediol (BDO) production to obtain tetrahydrofuran (elastane fibers) and polybutylene terephthalate (electrical equipment, wheel covers, gearshift knobs).

  • Di-methyl Succinate (DMS) production. It is a biobased solvent, miscible with alcohols, ethers, ketones and most hydrocarbons. It is used as a coalescing agent for emulsion paints in low VOC coating applications.

The Bioamber Corporation, the succinic acid is a processed whit the technology of catalyst and distillation, the result is 1,4-Butanediol.

Figure 8. 1,4-Butanediol from succinic acid. (Bioamber, 2008)

Production of biofuels and chemicals from renewable feedstock’s is necessary to meet the energy demand in a world where petrol fuels are becoming scarce and more expensive (Almeida, Fávaro, & Quirino, 2012).


Other successful case is the biomaterials development with succinic acid, The SUCCIPACK project, in Europe, It aimed at investigating how polybutylene succinate (PBS) materials could answer the requirements of the food industry. SUCCIPACK considered the entire life cycle of packaging from the raw materials production to its end of life (Chemicko, 2014).


The SUCCIPACK project proposes a technique to progressively replace packaging based on petroleum derived materials with biological alternatives. These biodegradable and recyclable packaging could also extend the food shelf life and protect it better (Cotillon, 2015).

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