Enhanced lactic acid production from potato peel waste via MnO2 nanoparticle-assisted simultaneous saccharification and fermentation: Process optimization and kinetic studies

Abstract

This study focused on optimizing lactic acid production from potato peel waste facilitated by MnO2 nanoparticle (NP). Also, kinetic analysis was conducted, utilizing the growth constant (Kg), logistic function, and modified Gompertz model to evaluate the process dynamics under optimized conditions and the control experiment (without NP). Under optimized conditions (0.034 wt% MnO2 NP, 6.02 pH, 34 ◦C temperature, and 14.90 wt% solid loading), notable increases in biomass and lactic acid concentrations of 2.85 g/L and 41.26 g/L were achieved representing a 1.16 and 1.42-fold increments respectively. In addition, the inclusion of MnO2 NP increased the maximum potential lactic acid concentration (Pm) and production rate, reaching 32.89 g/L and 1.51 g/L/h, respectively, compared to the control’s values of 29.80 g/L and 1.43 g/L/h. This study underscores the potential of MnO2 NP in boosting lactic acid bioprocessing and yield towards enhanced bioconversion of agricultural waste to useful products.

Description

Keywords

Manganese oxide, Nanoparticles, Potato peel waste, Lactic acid

Citation

Naidu, T. et al. (2025) Enhanced lactic acid production from potato peel waste via MnO2 nanoparticle-assisted simultaneous saccharification and fermentation: Process optimization and kinetic studies. Bioresource technology. [Online] 435.