Kinetics and thermodynamics of glucoamylase inhibition by lactate during fermentable sugar production from food waste

Wang, Xiao Qiang; Wang, Qun Hui; Liu, Yijie; Zhi, Hong; Wang, Xüming

doi:10.1002/jctb.2355

J of Chemical Tech & Biotech

2010

DOI: 10.1002/jctb.2355

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Kinetics and thermodynamics of glucoamylase inhibition by lactate during fermentable sugar production from food waste

Xiao Qiang Wang

Qun Hui Wang

Yijie Liu

et al.

Abstract: BACKGROUND: Glucoamylase hydrolysis is a key step in the bioconversion of food waste with complicated composition. This work investigated the effect of lactate on glucoamylase from Aspergillus niger UV-60, and inhibition mechanisms of glucoamylase by lactate during food waste hydrolysis.

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Cited by 3 publications

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Synergistic effect of mixed methanol/ethanol on transesterification of waste food oil using p‐toluenesulfonic acid as catalyst

Zheng

et al. 2015

Env Prog and Sustain Energy

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In this study, inexpensive waste food oil was used as raw material, the p‐toluenesulfonic acid as catalyst, the methanol/ethanol as a transesterification agent to prepare biodiesel was reported. The results indicated that the mixed methanol/ethanol contributed to improving the biodiesel performance. Specifically, when mole percentage of ethanol in the total alcohol was 30%, the yield reached 99.55%, and heating value reached 40.47 MJ/Kg. It was higher than that of single methanol and single ethanol as transesterification agent, respectively. The concentration of saturated fatty acid esters in the biodiesel were also increased by mixed methanol/ethanol as transesterification agent (i.e. increase in the proportion of H in C/H), resulting in higher biodiesel heating value. The mixed methanol/ethanol also showed a good synergistic effect in the biodiesel preparation process. The solubility of ethanol in oil is superior to that in methanol, and ethanol plays a double role of the cosolvent and the transesterification agent. Methanol weakened the drawbacks of the steric effect and emulsification effect of ethanol. This study showed that the methanol can be partially substituted by ethanol. It reduced not only the dependence on methanol, but also the yield and heating value of biodiesel can be increased. © 2015 American Institute of Chemical Engineers Environ Prog, 34: 1547–1553, 2015

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Synergistic effect of mixed methanol/ethanol on transesterification of waste food oil using p‐toluenesulfonic acid as catalyst

Zheng

et al. 2015

Env Prog and Sustain Energy

View full text Add to dashboard Cite

show abstract

Lactic acid accumulation from sludge and food waste to improve the yield of propionic acid-enriched VFA

Chen

Zhao

et al. 2014

Biochemical Engineering Journal

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Production of cellulase by Aspergillus niger through fermentation of spent mushroom substance: Glucose inhibition and elimination approaches

Gao²,

Li³

et al. 2022

Process Biochemistry

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Kinetics and thermodynamics of glucoamylase inhibition by lactate during fermentable sugar production from food waste

Abstract: BACKGROUND: Glucoamylase hydrolysis is a key step in the bioconversion of food waste with complicated composition. This work investigated the effect of lactate on glucoamylase from Aspergillus niger UV-60, and inhibition mechanisms of glucoamylase by lactate during food waste hydrolysis.

Cited by 3 publications

References 28 publications

Synergistic effect of mixed methanol/ethanol on transesterification of waste food oil using p‐toluenesulfonic acid as catalyst

Synergistic effect of mixed methanol/ethanol on transesterification of waste food oil using p‐toluenesulfonic acid as catalyst

Lactic acid accumulation from sludge and food waste to improve the yield of propionic acid-enriched VFA

Production of cellulase by Aspergillus niger through fermentation of spent mushroom substance: Glucose inhibition and elimination approaches

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