Simultaneous saccharification and citric acid production from paper wastewater pretreated banana pseudostem: Optimization of fermentation medium formulation and kinetic assessment.

Autor: Laltha M; University of KwaZulu-Natal, School of Life Sciences, Pietermaritzburg, South Africa., Sewsynker-Sukai Y; University of Fort Hare, Fort Hare Institute of Technology, Private Bag X1314, Alice 5700, South Africa., Gueguim Kana EB; University of KwaZulu-Natal, School of Life Sciences, Pietermaritzburg, South Africa. Electronic address: kanag@ukzn.ac.za.
Jazyk: angličtina
Zdroj: Bioresource technology [Bioresour Technol] 2022 Oct; Vol. 361, pp. 127700. Date of Electronic Publication: 2022 Jul 25.
DOI: 10.1016/j.biortech.2022.127700
Abstrakt: This study optimized the simultaneous saccharification and citric acid (CA) production from banana pseudostem (BP). Thereafter, kinetic assessment of Aspergillus brasiliensis growth and CA production were determined for the optimum conditions using fresh water (SSF optimizedFW ) or dairy wastewater (SSF DWW ) and compared to Sabouraud Dextrose Emmon's medium modified with BP (SSF SDEmodified ). The optimized conditions gave a CA concentration of 14.408 g/L. Kinetic assessment revealed the same maximum specific growth rates (μ max ) (0.05 h -1 ) for all three bioprocesses, while the SSF SDEmodified process resulted in the highest maximum potential CA concentration (P m ) (13.991 g/L) in comparison to the SSF DWW (P m  = 13.095 g/L) and SSF optimizedFW (P m  = 12.967 g/L) systems. Findings from this study facilitates the implementation of waste-based lignocellulosic bioprocesses that may eradicate the use of expensive pretreatment chemicals, fermentation medium constituents, and resources, in keeping with the water, energy and food nexus towards developing a circular bioeconomy.
(Copyright © 2022 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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