Sugar industry waste: an alternative for obtaining lactic acid
Keywords:
agro-industrial waste, molasses, bagasse, lactic acid.Abstract
Large amounts of crop residues and agro are generated and accumulated annually in nature in solid, causing serious environmental pollution problems and loss of potential sources of high added value. These problems bring increased interest in the scientific community in finding new technologies for exploiting them in obtaining high-value products. Within this waste (byproducts) is the sugar cane bagasse and molasses sugar or molasses. In this work we used solutions of hydrolyzed bagasse enriched with yeast extract (10 g / L), Corn Steep Liquor (10 g / L) and a mixture of both in fermentations with L. pentosus. On the other hand was used molasses from sugar cane performing a reversal of the sucrose prior to fermentation with enzyme invertase 4X 1% at pH 6.2 in sterile solutions of molasses 120g / L inoculated with L. rhamnosus and incubated at 41.5 º C and 150 rpm. In both cases, the fermentations were carried out to obtain lactic acid.References
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