CHEMICALLY DEFINED CULTURE MEDIUM FOR FERMENTATION TO PRODUCE SUCCINIC ACID AND APPLICATION THEREOF
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United States of America Patent
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Aug 28, 2014
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Sep 14, 2012
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Nov 11, 2011
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Abstract
This invention belongs to the technical field of industrial microorganism fermentation and relates to a type of chemical defined medium used for succinic acid production by fermentation and its application. The chemical defined medium of this invention used for succinic acid production by fermentation includes conventional compositions and critical growth factor compositions. Said critical growth factor compositions include biotin or 5-ALA, niacin, amino acid, and methionine. This formula determines four critical growth factors of succinic acid fermentation through reasonable technical means. The culture medium is free of complicated and expensive nutritious compositions such as yeast powder and peptone. Reliance on expensive vitamin by production of succinic acid through fermentation in defined medium is avoided, so that production cost of succinic acid can be greatly lowered, and subsequent separation process can be simplified, constituting a key step of industrial production of succinic acid using chemical defined medium.
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