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Reynen, C., Haederich, B., Pfefferie, W., Eggeling, L., Sahm, H. and Patek, M. (2006) New Coryneform Bacteria for Fermentation Production of L-Lysine, Especially for Use as Feed Additive, Containing Amplified Pyc Gene and Amplified DapA Gene with Specific Mutated promoter. EP161925248.

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• TITLE: Lysine Production of Microbacterium lacticum by Submerged Fermentation Using Various Hydrocarbon, Sugar and Nitrogen Sources

  AUTHORS: C. C. Ezemba, C. A. Ozokpo, V. N. Anakwenze, G. C. Anaukwu, C. M. Ogbukagu, C. C. Ekwealor, I. A. Ekwealor

  KEYWORDS: Lysine, Microorganism, Submerged Medium, Soil, Microbacterium lacticum

  JOURNAL NAME: Advances in Microbiology, Vol.6 No.11, September 7, 2016

  ABSTRACT: Bacterial isolation from oil-contaminated and uncontaminated soil was screened for hydrocarbon utilizer which was also capable of producing lysine. Microbial production of lysine by Microbacterium lacticum was investigated in submerged fermentations using various concentrations of hydrocarbon, sugar sources and nitrogen. Of the nine sugar and five nitrogen sources tested, glucose/ammonium sulphate proved optimum for lysine production. Effect of varying concentration of carbon and nitrogen sources on lysine accumulation showed that glucose (4%) ammonium sulphate (1%) respectively increased lysine production. A gram positive rod bacterium identified as Microbacterium lacticum was identified. Optimizing the cultural conditions of Microbacterium lacticum in submerged medium gave a methionine yield of 2.99 mg/ml lysine in the broth culture after 96 h.