Third Generation Lactic Acid Production by Lactobacillus pentosus from the Macroalgae Kappaphycus alvarezii Hydrolysates

The evaluation of macroalgae as a new raw material for diverse bioprocesses is great interest due to their fast growth rate and low environmental impact. Lactic acid has high value in the bio-based industry mainly produced via fermentation. anaerobic lactic fermentation Kappaphycus alvarezii hydrolysates using high-producing strain Lactobacillus pentosus was evaluated detoxified non-treated prepared from concentrated algal biomass dilute solution mixtures. A novel hydrolysate detoxification procedure, combining activated charcoal over-liming, 5-hydroxymethylfurfural (HMF) removal used. L. found successfully ferment untreated up 30% 20% w/v solutions, respectively. Significant production rates (1.88 g/L.h) short lag phases were achieved bioreactor operating at 37 °C pH 6 with 150 rpm impeller velocity. 0.94 g/g yield fermentable sugars (galactose glucose) achieved, indicating that K. could be used production, within context Third Generation (3G) biorefinery.