Enhanced volatile fatty acids production from anaerobic fermentation of food waste: A mini-review focusing on acidogenic metabolic pathways

Zhou, Miaomiao; Yan, Binghua; Wong, Jonathan W.C.; Zhang, Yang

doi:10.1016/j.biortech.2017.06.121

Cited by 533 publications

(242 citation statements)

References 94 publications

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“…Regarding the production of VFAs, total concentration and profile was affected by both evaluated parameters (pH and temperature, Figure ). The dependence of VFAs profile and concentration on the employed substrate and the operational conditions was previously reported in . Moreover, the differences in VFAs profile would determine the different specific application of each VFA .…”

Section: Resultsmentioning

confidence: 74%

“…Additionally, in this particular case, the nature of the anaerobic sludge used as inoculum, which was adapted to work at pH close to neutrality, might also decrease its efficiency when forcing the digestion at pH 5.5. Methane production was analyzed at two different pHs (5.5 and 7.5) and temperatures (25,35, and 50 C) over digestion time (30-35 days) ( Figure 2). After 9 and 7 days of digestion and pH 5.5 and 7.5, respectively, all the batches showed VFAs consumption (data not shown).…”

Section: Effect Of Initial Ph and Temperature On Ad Of Protease Pretrmentioning

confidence: 99%

“…The dependence of VFAs profile and concentration on the employed substrate and the operational conditions was previously reported in. 25 Moreover, the differences in VFAs profile would determine the different specific application of each VFA. 26 At psychrophilic conditions, pH 7.5 mediated higher acetic acid concentration (50-57%) compared with pH 5.5 (40-46%).…”

Section: Effect Of Initial Ph and Temperature On Ad Of Protease Pretrmentioning

confidence: 99%

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Volatile fatty acids production from protease pretreated Chlorella biomass via anaerobic digestion

Magdalena

Tomás‐Pejó

Ballesteros

et al. 2018

Biotechnology Progress

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Volatile fatty acids (VFAs) produced via anaerobic digestion (AD) are regarded as a low cost production process of building blocks of interest for the chemical industry. In this study, VFAs and methane production were assessed in batch reactors at different temperature ranges (psychrophilic 25°C, mesophilic 35°C, thermophilic 50°C) and different pH values (5.5 and 7.5) using protease pretreated Chlorella sp. biomass as substrate. Acetic acid and propionic acid were the most abundant products (up to 73% of the total VFAs) during the first days independently of the conditions. VFAs concentration decreased over time as methane was produced after a lag phase of 7–10 days. Results showed that best conditions for VFAs production were mesophilic temperature ranges (35°C) at neutral initial pH values (7.5), and psychrophilic temperature ranges (25°C) at low initial pH values (5.5) which resulted in a conversion of the initial COD into VFAs of 48%, respectively. © 2018 American Institute of Chemical Engineers Biotechnol. Prog., 34:1363–1369, 2018

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Section: Resultsmentioning

confidence: 74%

Section: Effect Of Initial Ph and Temperature On Ad Of Protease Pretrmentioning

confidence: 99%

Section: Effect Of Initial Ph and Temperature On Ad Of Protease Pretrmentioning

confidence: 99%

See 1 more Smart Citation

Volatile fatty acids production from protease pretreated Chlorella biomass via anaerobic digestion

Magdalena

Tomás‐Pejó

Ballesteros

et al. 2018

Biotechnology Progress

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“…It is worthwhile mentioning that the longer the fatty acid chain, the higher the market value of the VFA, which constitutes a reason to generally aim for the production of heavier products rather than lighter (Zhou et al, 2017). VFAs have a wide array of uses, including biological nitrogen removal, generation of electricity in microbial fuel cells or applications in food, textiles or pharmaceuticals.…”

Section: Volatile Fatty Acids and Concomitant Hydrogen Productionmentioning

confidence: 99%

“…The metabolic pathways to obtain VFAs are varied and include fermentations of different types like acetate-ethanol, propionate, butyrate, mixed-acid, lactate and homoacetogenic (Zhou et al, 2017). The metabolic pathways to obtain VFAs are varied and include fermentations of different types like acetate-ethanol, propionate, butyrate, mixed-acid, lactate and homoacetogenic (Zhou et al, 2017).…”

Section: Volatile Fatty Acids and Concomitant Hydrogen Productionmentioning

confidence: 99%

Food waste as a source of value‐added chemicals and materials: a biorefinery perspective

Esteban

Ladero

2018

Int J of Food Sci Tech

126

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Summary As the availability of fossil‐based resources declines, there is an impending necessity of finding alternative feedstock able to secure the production of fuels and chemicals. Exploitation of biomass as renewable source of chemicals is an attractive possibility, in particular the one derived from food waste (FW). Every year, large amounts of waste are generated within or at the end of the food supply chain at the consumers use stage and hence its valorisation attracts great attention. FW has proven a valuable feedstock for its exploitation to produce a wide array of intermediates and products with promising applications in industry, owing to their similar performance with respect to established products. These include organic acids and furans (generally used as platform chemicals to further products); polymers like bacterial cellulose, polyhydroxyalkanoates or chitin; biosurfactants; biolubricants; or nanoparticles. This overview covers the latest trends in chemical, enzymatic and biotechnological processes reported in literature on the production of these chemicals and materials, with a focus on the use of FW as raw material.

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Current status and future perspectives on the biological production of polyhydroxyalkanoates

Che

Jin

Zhou

et al. 2023

Asia-Pacific J Chem Eng

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Nowadays, the environmental pollution caused by conventional petroleum‐based plastics is one of the most serious problems facing mankind, and it is of great significance to look for alternative plastics with biodegradable feature. Notably, the bioplastics based on polyhydroxyalkanoates (PHA) have been a focus on research and development during the past several decades. In this review, the recent advances on the biological production of PHA were summarized, mainly including biosynthetic pathways and methods, followed by the extraction processes. Furthermore, the current status on PHA production using industrial waste streams was also discussed. For the moment, the relative higher production cost hindered the large‐scale biological production of PHA. Therefore, some insightful strategies were presented about the future research and scale production on biological production of PHA.

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Enhanced volatile fatty acids production from anaerobic fermentation of food waste: A mini-review focusing on acidogenic metabolic pathways

Cited by 533 publications

References 94 publications

Volatile fatty acids production from protease pretreated Chlorella biomass via anaerobic digestion

Volatile fatty acids production from protease pretreated Chlorella biomass via anaerobic digestion

Food waste as a source of value‐added chemicals and materials: a biorefinery perspective

Current status and future perspectives on the biological production of polyhydroxyalkanoates

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