Details

Autor(en) / Beteiligte

• Naomi David, Anthea
• Sewsynker-Sukai, Y.
• Gueguim Kana, E.B.

Titel

Co-valorization of corn cobs and dairy wastewater for simultaneous saccharification and lactic acid production: Process optimization and kinetic assessment

Ist Teil von

• Bioresource technology, 2022-03, Vol.348, p.126815-126815, Article 126815

Ort / Verlag

England: Elsevier Ltd

Erscheinungsjahr

2022

Quelle

MEDLINE

Beschreibungen/Notizen

• [Display omitted] •Co-valorization of dairy wastewater and corn cobs for lactic acid (LA) production.•Optimization using waste-based medium gave maximum LA of 11.15 g/L.•Waste-based bioprocess revealed comparable μmax (0.35 h−1) and Pm (13.01 g/L).•Microaerophilic conditions enhanced microbial cell growth and lactic acid formation.•Potential elimination of expensive media components and fresh water in bioprocesses. This study optimized the co-valorization of corn cob wastes (CCW) and dairy wastewater for simultaneous saccharification and lactic acid (LA) production (sDWW-SSF). Subsequently, the kinetics of Lactobacillus plantarum growth and LA production was assessed using the optimized conditions under microaerophilic (sDWW-SSFmicroaerophilic) and anaerobic (sDWW-SSFanaerobic) conditions, and thereafter compared to De Man, Rogosa and Sharpe (MRS) medium modified with pretreated CCW (mMRS-SSFmicroaerophilic). Optimized sDWW-SSF conditions produced maximum LA concentration and conversion of 11.15 ± 0.42 g/L and 18.90 ± 0.75%, respectively. Kinetic studies revealed that although the mMRS-SSFmicroaerophilic system obtained a higher maximum specific growth rate (μmax) and maximum potential LA concentration (Pm) compared to the wastewater-based bioprocesses, the data obtained for the latter were comparable when taking the resources and costs into consideration. These findings represent the potential to eliminate the use of valuable resources in lignocellulosic bioprocesses and provide insights on innovation towards driving a sustainable economy in line with the food-energy-water nexus.