In this study, the influence exogenous electron shuttles on the growth and glucose fermentative metabolism of Clostridium sp. BC1 was investigated. Bicarbonate addition to mineral salts (MS) medium accelerated growth and glucose fermentation which shifted acidogenesis (acetic- and butyric-acids) towards solventogenesis (ethanol and butanol). Addition of ferrihydrite, anthraquinone disulfonate, and nicotinamide adenine dinucleotide in bicarbonate to growing culture showed no significant influence on fermentative metabolism. In contrast, methyl viologen (MV) enhanced ethanol- and butanol-production by 28- and 12-fold, respectively with concomitant decrease in hydrogen, acetic- and butyric-acids compared to MS medium. The results show that MV addition affects hydrogenase activity with a significant reduction in hydrogen production and a shift in the direction of electron flow towards enhanced production of ethanol and butanol.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.biortech.2011.12.040 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Limosilactobacillus reuteri fermented brown rice alleviates anxiety improves cognition and modulates gut microbiota in stressed mice.
NPJ Sci Food
January 2025
Department of Food Science and Biotechnology, College of Agriculture and Life Sciences, Kangwon National University, Chuncheon, South Korea.
Chronic stress disrupts gut microbiota homeostasis, contributing to anxiety and depression. This study explored the effects of Limosilactobacillus reuteri fermented brown rice (FBR) on anxiety using an ICR mouse chronic mild stress (CMS) model. Anxiety was assessed through body weight, corticosterone levels, neurotransmitter profiles, and behavioral tests.
View Article and Find Full Text PDFFXR-ApoC2 pathway activates UCP1-mediated thermogenesis by promoting the browning of white adipose tissues.
J Biol Chem
January 2025
Department of Science in Korean Medicine, Graduate School, Kyung Hee University, 02447, Seoul, Korea; Department of Pharmacology, College of Korean Medicine, Kyung Hee University, 02447, Seoul, Korea; Kyung Hee Institute of Convergence Korean Medicine, Kyung Hee University, 02447, Seoul, Korea. Electronic address:
FXR, encoded by Nh1r4, is a nuclear receptor crucial in regulating bile acid, lipid, and glucose metabolism. Prior research has indicated that activating FXR in the liver and small intestine may offer protection against obesity and metabolic diseases. This study demonstrates the essential role of the FXR-ApoC2 pathway in promoting the browning of white adipose tissue (WAT).
View Article and Find Full Text PDFPreparation, modification, characterization, and stability evaluation of 5-methyltetrahydrofolate liposomes.
Food Chem
January 2025
Department of Food Science and Technology, Jinan University, Guangzhou 510632, China. Electronic address:
As an essential B vitamin, folate participates in one‑carbon metabolism. The 5-methyltetrahydrofolate (5-MTHF) avoids the drawbacks associated with folic acid and native folylpolyglutamate folate in food, thereby emerging as a superior alternative to folate supplement. To enhance the stability and digestibility of 5-MTHF, nanoliposome (NL) was modified using a layer-by-layer self-assembly method with chitosan (CH) and pectin (P).
View Article and Find Full Text PDFIdentification of phenols and their formation network during the brewing process of Shanxi aged vinegar.
Food Chem
December 2024
Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, School of Biological Engineering, Tianjin University of Science and Technology, Tianjin 300457, China. Electronic address:
Phenols are important functional compounds present in vineagr, however, their composition and formation pathways remain uncertain. Herein, non-targeted metabolomics and macrotranscriptomics methods were applied to identify phenols and analyze their formation network during the brewing process of Shanxi aged vinegar. A total of 82 phenols were detected from the raw material and the brewing process.
View Article and Find Full Text PDFNovel genomic features in entomopathogenic fungus Beauveria bassiana ILB308: accessory genomic regions and putative virulence genes involved in the infection process of soybean pest Piezodorus guildinii.
Pest Manag Sci
January 2025
Laboratorio de Bioproducción, Bioinsumos, INIA Las Brujas, Canelones, Uruguay.
Background: Biological control methods involving entomopathogenic fungi like Beauveria bassiana have been shown to be a valuable approach in integrated pest management as an environmentally friendly alternative to control pests and pathogens. Identifying genetic determinants of pathogenicity in B. bassiana is instrumental for enhancing its virulence against insects like the resistant soybean pest Piezodorus guildinii.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!