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Fermentation, Volume 11, Issue 4

April 2025 - 74 articles

Cover Story: The biodiesel industry generates 5.5 billion liters of glycerol-rich residue annually. Certain Clostridium species can convert glycerol into 1,3-propanediol (1,3-PDO), a product in high demand within the polymer industry. This study optimized glycerol and ammonium sulfate concentrations to enhance 1,3-PDO production by Clostridium beijerinckii Br21. The optimized concentrations resulted in a 112% increase in 1,3-PDO concentration. Gene expression analysis revealed the significant upregulation of genes related to the oxidative and reductive pathways of 1,3-PDO biosynthesis. The results support glycerol and ammonium sulfate optimization as an effective strategy for improving 1,3-PDO production, demonstrating the potential of the bioconversion of glycerol-rich residues into value-added products. View this paper
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Articles (74)

  • Article
  • Open Access
961 Views
20 Pages

Antioxidant and ACE-Inhibition Activities After In Vitro Digestion of a Non-Fermented Dairy Beverage Enriched with Postbiotics of Lactobacillus spp.

  • Norma Angélica Bolivar-Jacobo,
  • Raúl Alberto Reyes-Villagrana,
  • Martha María Arévalos-Sánchez,
  • Ana Luisa Rentería-Monterrubio,
  • Eduardo Santellano-Estrada,
  • Nora Aidee Salas-Salazar and
  • América Chávez-Martínez

Postbiotics are recently gaining consumer attention for their potential health benefits. This study aimed to examine the effects of supplementation of a non-fermented dairy beverage with postbiotics derived from Lactobacillus acidophilus and Lactobac...

  • Article
  • Open Access
1,098 Views
15 Pages

A Novel Pyrazinone Derivative with Anti-MRSA Activity, Produced by Streptomyces anulatus Isolated from the Rhizosphere of Malus trilobata in Lebanon

  • Dany Abi Chahine,
  • Bassel Awada,
  • Ghada Derbaj,
  • Aya Hanna,
  • Antoine Abou Fayad and
  • Mireille Kallassy Awad

Antimicrobial resistance (AMR) poses a significant global health threat, largely driven by the overuse and misuse of antibiotics. Methicillin-resistant Staphylococcus aureus (MRSA), a multidrug-resistant pathogen, remains a critical target for novel...

  • Article
  • Open Access
3 Citations
1,217 Views
26 Pages

Microbial Dynamics and Quality Evolution in the Spontaneous Fermentation of the Traditional Meat Product Sjenica Sheep Stelja

  • Tanja Žugić Petrović,
  • Vladimir M. Tomović,
  • Sunčića Kocić-Tanackov,
  • Katarina G. Marković,
  • Nataša Joković,
  • Ivana D. Radojević and
  • Mirjana Ž. Grujović

The Sjenica sheep stelja is a characteristic, traditional dry-cured meat product from Serbia with unique and recognizable sensory attributes. The methodology involved examining physicochemical measurements, followed by sensory evaluation and microbio...

  • Article
  • Open Access
1 Citations
1,631 Views
17 Pages

In this study, we established a mutagenesis and high-throughput screening system to select a high-yielding glutathione (GSH)-producing strain of Saccharomyces cerevisiae. The parent strain was mutated by atmospheric and room temperature plasma (ARTP)...

  • Review
  • Open Access
4 Citations
2,553 Views
14 Pages

Electro-Fermentation for Biofuel and Biochemical Production

  • Priya Pilania,
  • Keshani Bhushan and
  • Urmila Gupta Phutela

Electro-fermentation (EF) is an emerging bioprocess with the ability to regulate the metabolism of electrochemically active microorganisms. In various fermentation processes, electrodes perform either as an electron acceptor or donor, facilitating th...

  • Article
  • Open Access
1,052 Views
13 Pages

In this study, we analyzed the quality characteristics of short-term fermented cream cheese with added Citrus junos peel (CP). Samples were classified as CP1, CP2, and CP3 based on the amount of CP added. The quality analysis included pH, viscosity,...

  • Review
  • Open Access
2 Citations
4,855 Views
24 Pages

Recent Biotechnological Applications of Whey: Review and Perspectives

  • Raúl J. Delgado-Macuil,
  • Beatriz Perez-Armendariz,
  • Gabriel Abraham Cardoso-Ugarte,
  • Shirlley E. Martinez Tolibia and
  • Alfredo C. Benítez-Rojas

This paper comprehensively reviews whey, a by-product of cheese production, as a raw material for various biotechnological applications. It addresses its unique composition, the environmental impact of its inadequate disposal, and the opportunities i...

  • Article
  • Open Access
2 Citations
1,097 Views
16 Pages

Purple phototrophic bacteria (PPB) offer a sustainable approach for biological wastewater treatment while simultaneously producing valuable by-products such as polyhydroxyalkanoates (PHAs). This study investigates the effects of continuous light wave...

  • Article
  • Open Access
1 Citations
1,422 Views
20 Pages

Starter culture significantly influences the texture and flavor of yogurt, making the selection of appropriate fermentation strains a key focus in yogurt starter research. In this study, protease-producing Lactiplantibacillus plantarum NH-24, identif...

  • Article
  • Open Access
1 Citations
1,892 Views
13 Pages

Retinoids, including retinol, retinal, and retinoic acid, are a group of vitamin A derivatives with skin-improving effects. Retinoic acid is highly effective for skin anti-aging but can cause irritation, requiring a prescription. Retinol, a less irri...

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Fermentation - ISSN 2311-5637