Product spectrum analysis and microbial insights of medium-chain fatty acids production from waste biomass during liquor fermentation process: Effects of substrate concentrations and fermentation modes

Zhao, Jihua; Ma, Haile; Wu, W.; Bacar, Mohammed Ali; Gao, Ming; Wu, Chuanfu; Xia, Changlei; Qian, Dayi; Chong, William Woei Fong; Lam, Su Shiung

doi:10.1016/j.biortech.2022.128375

Cited by 14 publications

(1 citation statement)

References 41 publications

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“…Rummeliibacillus has been associated with the production of butyrate and caproate in previous studies. 45,46 Group B2 was primarily represented by Terrisporobacter (13.7%) and Haloimpatiens (11.2%). Terrisporobacter was suggested as homoacetogens capable of producing acetate from syngas.…”

Section: Mixed Culture Fermentation With Differentmentioning

confidence: 99%

Tandem Acidic CO₂ Electrolysis Coupled with Syngas Fermentation: A Two-Stage Process for Producing Medium-Chain Fatty Acids

Pu,

Wang,

et al. 2024

Environ. Sci. Technol.

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The tandem application of CO2 electrolysis with syngas fermentation holds promise for achieving heightened production rates and improved product quality. However, the significant impact of syngas composition on mixed culture-based microbial chain elongation remains unclear. Additionally, effective methods for generating syngas with an adjustable composition from acidic CO2 electrolysis are currently lacking. This study successfully demonstrated the production of medium-chain fatty acids from CO2 through tandem acidic electrolysis with syngas fermentation. CO could serve as the sole energy source or as the electron donor (when cofed with acetate) for caproate generation. Furthermore, the results of gas diffusion electrode structure engineering highlighted that the use of carbon black, either alone or in combination with graphite, enabled consistent syngas generation with an adjustable composition from acidic CO2 electrolysis (pH 1). The carbon black layer significantly improved the CO selectivity, increasing from 0% to 43.5% (0.05 M K+) and further to 92.4% (0.5 M K+). This enhancement in performance was attributed to the promotion of K+ accumulation, stabilizing catalytically active sites, rather than creating a localized alkaline environment for CO2-to-CO conversion. This research contributes to the advancement of hybrid technology for sustainable CO2 reduction and chemical production.

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Section: Mixed Culture Fermentation With Differentmentioning

confidence: 99%

Tandem Acidic CO₂ Electrolysis Coupled with Syngas Fermentation: A Two-Stage Process for Producing Medium-Chain Fatty Acids

Pu,

Wang,

et al. 2024

Environ. Sci. Technol.

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Preparation of Environmental Probiotic Factor γ-Polyglutamic Acid via Microbial Fermentation Using Baijiu Brewing Steamer Bottom Water as a Basic Substrate

Wang,

Yang,

Chen

et al. 2023

Waste Biomass Valor

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1) Purpose: Steamer bottom water is the main component of wastewater in the Baijiu industry.2) Methods: In this study, γ-PGA was synthesized through fermentation using steamer bottom water as a substrate to address wastewater treatment problems and costs in Baijiu enterprises. A new, cheap raw material and process of γ-PGA production were developed.3) Results: The γ-PGA yield was 48.29 g/L, which was 1.98 times higher than that before optimization. We detected 12 volatile substances in the fermentation broth; acetic acid, 2,3-butanedione, 2-methyl-butanoic acid, and acetoin were recognized as plant probiotics. The N, P, K, and total nutrient (sum of N, P, and K) contents were 4,100, 3,405, 885, and 8,390 mg/L, respectively; the number of viable Bacillus subtilis was 4.5×10 7 CFU/mL. 4) Conclusion: Therefore, steamer bottom water of Baijiu brewing can completely replace water as a fermentation medium solvent to produce γ-PGA. Moreover, the fermentation broth is a potential functional organic fertilizer. Highlights 1. γ-PGA was synthesized to address wastewater treatment problems and costs 2. New strategy for comprehensive high-value utilization of wastewater was developed 3. The prepared fermentation broth may be used as a functional organic fertilizer

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Effect of high corn straw loads on short-chain fatty acid production in semi-continuous rumen reactor

Liang,

Zhang,

Chen

et al. 2024

Bioresource Technology

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Product spectrum analysis and microbial insights of medium-chain fatty acids production from waste biomass during liquor fermentation process: Effects of substrate concentrations and fermentation modes

Cited by 14 publications

References 41 publications

Tandem Acidic CO₂ Electrolysis Coupled with Syngas Fermentation: A Two-Stage Process for Producing Medium-Chain Fatty Acids

Tandem Acidic CO₂ Electrolysis Coupled with Syngas Fermentation: A Two-Stage Process for Producing Medium-Chain Fatty Acids

Preparation of Environmental Probiotic Factor γ-Polyglutamic Acid via Microbial Fermentation Using Baijiu Brewing Steamer Bottom Water as a Basic Substrate

Effect of high corn straw loads on short-chain fatty acid production in semi-continuous rumen reactor

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Product spectrum analysis and microbial insights of medium-chain fatty acids production from waste biomass during liquor fermentation process: Effects of substrate concentrations and fermentation modes

Cited by 14 publications

References 41 publications

Tandem Acidic CO2 Electrolysis Coupled with Syngas Fermentation: A Two-Stage Process for Producing Medium-Chain Fatty Acids

Tandem Acidic CO2 Electrolysis Coupled with Syngas Fermentation: A Two-Stage Process for Producing Medium-Chain Fatty Acids

Preparation of Environmental Probiotic Factor γ-Polyglutamic Acid via Microbial Fermentation Using Baijiu Brewing Steamer Bottom Water as a Basic Substrate

Effect of high corn straw loads on short-chain fatty acid production in semi-continuous rumen reactor

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Product

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Tandem Acidic CO₂ Electrolysis Coupled with Syngas Fermentation: A Two-Stage Process for Producing Medium-Chain Fatty Acids

Tandem Acidic CO₂ Electrolysis Coupled with Syngas Fermentation: A Two-Stage Process for Producing Medium-Chain Fatty Acids