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A. Chatzifragkou, A. Makri, A. Belka, S. Bellou, M. Mayrou, M. Mastridou, P. Mystrioti, G. Onjaro, G. Aggelis and S. Papanikolaou, “Biotechnological Conversion of Biodiesel Derived Waste Glycerol by Yeast and Fungal Species,” Energy, Vol. 36, No. 2, 2012, pp. 1097-1108. doi:10.1016/j.energy.2010.11.040

has been cited by the following article:

• TITLE: Isolation of New Strains of Bacteria Able to Synthesize 1,3-Propanediol from Glycerol

  AUTHORS: Daria Szymanowska-Powałowska, Agnieszka Drożdżyńska, Natalia Remszel

  KEYWORDS: Clostridium spp.; Bacteria Isolation; 1, 3-Propanediol; Glycerol Conversion; Microflora of Natural Environment

  JOURNAL NAME: Advances in Microbiology, Vol.3 No.2, May 31, 2013

  ABSTRACT: The natural environment is inhabited by many species that exhibit very specific metabolic activities that may find industrial applications. The aim of the study was to select non-pathogenic cultures of bacteria of the genus Clostridium and lactic acid bacteria able to convert glycerol into 1,3-propanediol (1,3-PD). Another aim of this study was to identify the isolates that best produced 1,3-propanediol both from pure and crude glycerol. The most efficient strains identified (Cl. butyricum) were analysed on a bioreactor scale. The aim was to determine temperature conditions on the efficiency and duration of 1,3-PD synthesis. The species Clostridium were identified using amplification of the 16S rRNA coding sequence. A total of 123 isolates (of the genus Clostridium and lactic acid bacteria) were isolated; a vast majority of these were able to synthesize 1,3-PD. The best results were obtained for Cl. butyricum strain DSP1, which was isolated from the rumen of a cow fed with glycerol. The strain efficiency using pure glycerol on bioreactor scale 0.65 mol/mol of glycerol at a temperature of 38℃ and a constant pH of 7.0.