Potato peel waste for fermentative biohydrogen production using different pretreated culture

Cao, Jinman; Xu, Chonglin; Zhou, Rui; Duan, Guilan; Lin, Aijun; Xiao, Yang; You, Siming; Zhou, Yaoyu; Yang, Guang

doi:10.1016/j.biortech.2022.127866

Cited by 17 publications

(5 citation statements)

References 45 publications

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“…In detail, 10.0 mL of the sludge sample was dried until a constant weight at 105 °C to determine the TS concentration, and then the dried sludge sample was calcined at 600 °C in a muffle furnace until a constant weight to determine the VS concentration. After filtering the fermentation broth through a membrane (0.45 μm), glucose and the dominant liquid metabolic products (acetate, propionate and butyrate) were analyzed using a high-performance liquid chromatography (Cao et al, 2022). Glucose utilization efficiency was calculated according to Eq.…”

Section: Other Analytical Methodsmentioning

confidence: 99%

“…After cooling to the ambient temperature, the pretreated sludge was centrifuged and washed via resuspension using deionized water (Cao et al, 2022), and then was used as the fermentation inoculum. VS concentration of the inoculum used was 16.67 g/L, and the dominant genera in the inoculum were Clostridium sensu stricto, Proteiniphilum, Petrimonas, Candidatus Caldatribacterium, Sedimentibacter and Paraclostridium.…”

Section: Inoculum Preparationmentioning

confidence: 99%

See 1 more Smart Citation

Metagenomic Insights into the Inhibitory Mechanisms of Cu on Fermentative Hydrogen Production

Cao

Duan²,

Lin

et al. 2023

Preprint

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Section: Other Analytical Methodsmentioning

confidence: 99%

Section: Inoculum Preparationmentioning

confidence: 99%

Metagenomic Insights into the Inhibitory Mechanisms of Cu on Fermentative Hydrogen Production

Cao

Duan²,

Lin

et al. 2023

Preprint

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“…The food waste with no inoculum served as the control. An inoculum-tosubstrate ratio (ISR) of 5-8% has been shown to be efficient for hydrolysis and acidogenesis in the acidogenic fermentation process [17,26,27]. Thus, in the current study, each reactor was initially loaded with a food waste slurry at a volumetric load of 16 g VS/L and an ISR of 6%.…”

Section: Batch Fermentation Studymentioning

confidence: 99%

Acidogenic Fermentation of Food Waste for the Production of Short-Chain Fatty Acids: The Impact of Inoculum Type and Inoculum Heat Pretreatment

Jodhani,

Sebastian,

Lee

et al. 2024

Fermentation

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Acidogenic fermentation is an emerging biotechnology that allows for the utilization of food waste as a feedstock to produce high-value products such as short-chain fatty acids (SCFAs), effectively offering a tangible solution for food waste management as well as resource recovery. The objectives of the current study were to identify the ideal inoculum, waste-activated sludge (WAS) or anaerobic digester sludge (AD), for the acidogenic fermentation of food waste at room temperature, as well as to evaluate the impact of heat pretreatment of these inoculums on fermentation performance. The maximum hydrolysis yield of 399 g sCOD/kg VS added was obtained when untreated AD was used as the inoculum, whereas the pretreated AD inoculum provided the highest SCFA yield and conversion efficiency of 238 g sCODSCFA/kg VS added and 71%, respectively. Heat pretreatment had a detrimental impact on the WAS inoculum, leading to lower hydrolysis and SCFA yields, but exerted a positive influence on the AD inoculum. The microbial community showed that heat pretreatment negatively impacted the abundance of non-spore-forming hydrolytic and acidogenic microorganisms. Overall, this study demonstrates the critical role of inoculum type and heat pretreatment in optimizing the acidogenic fermentation process, laying the groundwork for future refinements in SCFA production from food waste through inoculum design.

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“…It is anticipated that around 8000 kilotons of PPW might be generated in 2030, with related greenhouse gas emissions of 5 million tons of CO 2 equivalent (Khanal et al, 2023 ). The huge quantity of PPW generated annually also draws interest to the innovative and value‐added conversion of this carbon‐rich waste to value‐added by‐products with microorganisms in fermenters; notably to biohydrogen (Cao et al, 2022 ; Javed et al, 2019 ), biogas (Javed et al, 2019 ; Wu, 2016 ), biobutanol (Kamboj & Ms, 2021 ), bioethanol (Awogbemi et al, 2022 ), lactic acid (Arapoglou et al, 2010 ; Javed et al, 2019 ; Liang & McDonald, 2015 ; Wu, 2016 ), and enzymes (Khanal et al, 2023 ).…”

Section: Introductionmentioning

confidence: 99%

Potato peel waste fermentation by Rhizopus oryzae to produce lactic acid and ethanol

Ozer Uyar,

Uyar

2023

Food Science & Nutrition

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Potato peel waste (PPW), a zero‐value by‐product generated from potato processing, is a promising fermentation substrate due to its large quantity of starch, nonstarch polysaccharides, lignin, protein, and lipid. Rhizopus oryzae is a filamentous fungus that is mainly known as a lactic acid producer and can ferment various agro‐wastes. This study aimed to use R. oryzae for the fermentation of PPW. A series of batch fermentations were conducted to investigate the effects of different PPW loading rates (2%–8%) and particle sizes (0–4 mm). Under an initial PPW loading rate of 8% and particle size of 1–2 mm, the maximum ethanol (18.83 g/L) and lactic acid (3.14 g/L) concentrations, the highest ethanol (9.41 g/L·day) and lactic acid (1.89 g/L·day) average production rates were obtained. Under these conditions, the yield of ethanol and lactic acid was 0.235 g/gPPW and 0.039 g/gPPW, respectively. R. oryzae was shown to utilize PPW as a substrate to produce value‐added bioproducts such as ethanol (major product) and lactic acid.

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Potato peel waste for fermentative biohydrogen production using different pretreated culture

Cited by 17 publications

References 45 publications

Metagenomic Insights into the Inhibitory Mechanisms of Cu on Fermentative Hydrogen Production

Metagenomic Insights into the Inhibitory Mechanisms of Cu on Fermentative Hydrogen Production

Acidogenic Fermentation of Food Waste for the Production of Short-Chain Fatty Acids: The Impact of Inoculum Type and Inoculum Heat Pretreatment

Potato peel waste fermentation by Rhizopus oryzae to produce lactic acid and ethanol

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