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High Impact Factor Fermentation Journals
The fermentation type characteristic of the β-group members of Lactobacillus deserves special mention; they degrade glucose according the following overall balance: Here 1 mol of glucose is converted to xylulose-5-P via the hexose monophosphate route, which is then cleaved to acetylphosphate and GAP by pentose phosphoketolase (PK). GAP delivers lactate via the lower branch of glycolysis and the activity of LDH, whereas acetylphosphate is converted to acetate with the gain of 1 mol of ATP via phosphotransacetylase and acetokinase. As the formation of xylulose-5-phosphate is connected with the generation of 2 mol reducing equivalent and as the organism is unable to reduce acetate to ethanol, it needs to search for alternate compounds as acceptor for the surplus electrons: as a consequence, two units of hexose are reduced to mannitol to balance the redox state.