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Fermentation
Special Issues
Clean Energy Generation in Microbial Metabolism
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Clean Energy Generation in Microbial Metabolism

A special issue of Fermentation (ISSN 2311-5637). This special issue belongs to the section "Microbial Metabolism, Physiology & Genetics".

Deadline for manuscript submissions: closed (31 March 2024) | Viewed by 2652

Special Issue Editor

Dr. Meng Wang

E-Mail Website
Guest Editor
College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China
Interests: sustainable liquid fuel; metabolic engineering; enzymatic process; scale-up of bioprocesses

Special Issue Information

Dear Colleagues,

The utilization of fossil energy, especially its application as a transportation fuel, has resulted in the issue of continuous CO2 concentration increase. Therefore, the application and production of clean energy is an urgent task for our researchers and the global government.

The development of novel bioprocesses, including the construction of microbial strains and enzymatic processes, provides environmentally friendly choices for bioethanol, biodiesel, bio-aviation fuel, bio-hydrogen and the intermediate of biofuel production.

Various novel, bio-process-based clean energy production methods are welcomed, including microbial strain selection and construction by metabolic pathway modification, enzyme production and application for clean energy production, new bioreactor design and the scale-up of relative bioprocesses.

The goal of this Special Issue is to publish both recent innovative research results, as well as review papers on the production of clean energy or the bio-intermediate of sustainable energy through biochemical processes. Thus, review and research papers on the development of novel bio-processes, including the abovementioned topics, are of interest. If you would like to contribute a review paper, please contact one of the editors to discuss the relevance of the topic before submitting the manuscript.

Dr. Meng Wang
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Fermentation is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • sustainable energy production
  • bioprocesses
  • microbial strains construction
  • microbial metabolism
  • enzymatic process
  • bioreactor design
  • scale-up of bioprocesses
  • biogas
  • bioethanol
  • biodiesel
  • bio-aviation fuel
  • bio-hydrogen

Published Papers (2 papers)

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Research

16 pages, 3909 KiB  
Article
Continuous Fermentation Coupled with Online Gas Stripping for Effective Biobutanol Production
by Zhangnan Lin, Hongjuan Liu, Wei Cong and Jian’an Zhang
Fermentation 2023, 9(11), 942; https://doi.org/10.3390/fermentation9110942 - 30 Oct 2023
Viewed by 1253
Abstract
The main problems with the butanol fermentation process include high cost of grain raw materials, low product concentration and low butanol productivity caused by butanol cytotoxicity. In this study, cassava, a cheap crop, was used as the raw material. A symbiotic system TSH06, [...] Read more.
The main problems with the butanol fermentation process include high cost of grain raw materials, low product concentration and low butanol productivity caused by butanol cytotoxicity. In this study, cassava, a cheap crop, was used as the raw material. A symbiotic system TSH06, which possesses the capability to synthesize butanol under non-strict anaerobic conditions, was used as the fermentation strain. The fermentation performance of TSH06 in a cassava system was investigated. In order to eliminate product inhibition and promote the concentration and productivity of butanol, a strategy of continuous fermentation coupled with online gas stripping was developed. By using the strategy of two-stage continuous fermentation using immobilized cells coupled with online gas stripping, the butanol productivity reached 0.9 g/(L·h); at the same time, a high butanol concentration was achieved, and the concentration of butanol obtained in the condensate reached 71.2 g/L. Full article
(This article belongs to the Special Issue Clean Energy Generation in Microbial Metabolism)
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20 pages, 3020 KiB  
Article
Production of Liquid Biofuel Precursors: Optimization and Regulation of Lipase Fermentation and Its Application in Plant Oil Hydrolysis Process
by Shuai Huang, Hao Li, Ruisong Zhu, Meng Wang and Tianwei Tan
Fermentation 2023, 9(8), 708; https://doi.org/10.3390/fermentation9080708 - 26 Jul 2023
Viewed by 978
Abstract
In the liquid biofuel production process, free fatty acids are important precursors for biodiesel and bio-aviation fuel. Enzymatic hydrolysis to produce free fatty acids has attracted more and more attention. However, enzymatic hydrolysis requires ensuring efficient expression of lipase and high product yield. [...] Read more.
In the liquid biofuel production process, free fatty acids are important precursors for biodiesel and bio-aviation fuel. Enzymatic hydrolysis to produce free fatty acids has attracted more and more attention. However, enzymatic hydrolysis requires ensuring efficient expression of lipase and high product yield. In the shaking flask, the optimal addition amount of citric acid was 3 g/L, and the composition of composite amino acids was: histidine 0.1 mol/L, aspartic acid 0.03 mol/L and lysine 0.03 mol/L. On the basis of the shaking flask optimization, a 5 L fermentation tank was scaled up to obtain 25,000 U/mL of lipase after multiple batches of stable fermentation. This was the first time to cultivate Y. lipolytica using composite amino acid medium to produce high enzyme-activity lipase, demonstrating the industrial value of this lipase fermentation process. Finally, soybean oil was hydrolyzed to produce free fatty acids on a self-made static reactor. The optimized reaction conditions were: material flow rate 2813 mL/min, reaction temperature 45 °C, water content 25 wt% and lipase consumption 3 wt%. The yield of free fatty acids was 80.63% after 12 h under optimal reaction conditions in the self-made static reactor, 11.95% higher than that in the stirred reactor, which showed its industrial potential in the production of free fatty acids. Full article
(This article belongs to the Special Issue Clean Energy Generation in Microbial Metabolism)
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