Fermentation, Volume 10, Issue 11

The aroma-active compounds produced by Saccharomyces cerevisiae during the fermentation of wort are key to the unique aroma and flavour profiles of beer. In commercial fermentations, there is batch-to-batch variation depending on yeast “brewing...

The ability of Parageobacillus thermoglucosidasius to produce H₂ from CO via the water–gas shift (WGS) reaction makes it a compelling microorganism for biofuels research. Optimizing this process requires evaluating parameters such as pressure....

The performance of anaerobic digestion of mixed sludge (MS) with upstream thermal hydrolysis of waste activated sludge (WAS) was evaluated and compared to conventional anaerobic digestion. In contrast to previous studies, this work focuses on the eva...

This study explores the effect of ultrasonic treatment followed by fermentation on the in vitro protein digestibility, protein solubility, functional properties, antioxidant activity, total carotenoid content, and gamma-aminobutyric acid (GABA) level...

In typical whiskey, the content of higher alcohols is about 1500–2000 mg/L, leading to a high intoxicating degree (ID). To produce low-ID whiskey, Saccharomyces cerevisiae XF0-h, XF0-H and XF0-LH were successfully constructed by CRISPR-Cas9 gen...

Fumagillin is a complex biomolecule. Nowadays, the separation and purification techniques of fumagillin still need to be optimized. In this study, the yield of fumagillin was examined in relation to temperature, pH, inoculation volume, rotation speed...

Beauveria bassiana has distinct nutrient requirements depending on the growth stage, with the mycelial growth stage being particularly nutrient-intense. When nutrients are exhausted, B. bassiana produces numerous spores that re-germinate and release...

In this study, an upflow anaerobic packed-bed reactor (UAPB) produced biobutanol from the main byproduct of biodiesel plants, commonly known as glycerol. Currently, butanol production is mostly limited to pure cultures and sterilized feedstocks. Usin...

The present study investigated the effects of the commercial biopreservatives FRESHQ-11 (Lactobacillus rhamnosus), labeled as F, and HOLDBAC YM-B LYO 100 DCU (Lactobacillus rhamnosus and Propionibacterium freudenreichii subsp. shermanii), labeled as...

This study sets the criteria of high-grade kishk (a dried fermented cereal–milk product) based on sensory attributes. For this, kishk samples were collected, and physicochemical attributes and sensory attributes were recorded. Subsequently, Spe...

The implementation of the circular bioeconomy is now widely accepted as a critical step towards reducing the environmental burden of industrial waste and reducing the impact of this waste on climate change. The valorisation of waste using microorgani...

In Italy, watermelon cultivation spans 9510 hectares, with production levels largely influenced by seasonal market demand. As a result, surplus watermelon left unsold by September often remain in the fields, where they decompose naturally and go to w...

Lactic acid (LA) is an important chemical with diverse applications in various industries. LA can be produced by the fermentation of different substrates by many microorganisms such as bacteria, fungi, yeasts, and algae. Lactic acid bacteria (LAB) ar...

The evaluation of the aerobic stability of silages primarily involves monitoring temperature, while changes in composition are often neglected. In the present study, the effect of aeration on high-moisture corn ensiled with Lactiplantibacillus planta...

Ginkgo biloba extract (EGB) has been approved by the Food and Drug Administration in the United States for clinical studies on memory disorders. Ginkgolide B (GB) is the major terpene lactone component of EGB and is a specific and potent antagonist o...

Thamnidium elegans and Mortierella alpina are two oleaginous fungi that belong to Mucoromycota that synthesize polyunsaturated fatty acids, which are credited with multiple health benefits and possible anticancer properties. These fungi were cultivat...

Microalgae demonstrate significant efficacy in wastewater treatment. Anaerobic digestion effluent (ADE) is regarded as an underutilized resource, abundant in carbon, nitrogen, phosphorus, and other nutrients; however, the presence of inhibitory facto...

Few investigations have been carried out into the members of the genus Thermoanerobacter for protein and amino acid metabolism compared to carbohydrates, mostly due to the intense interest in bioethanol and biohydrogen in recent decades. The present...

The unscientific disposal of agricultural solid waste introduces more antibiotics and other pollutants into the environment. Composting, as an environmentally friendly solid waste disposal method, can be used as a green way to degrade antibiotics, an...

This study investigated the characterization of a novel multifunctional enzyme, RuXyn394, derived from the metagenome of beef cattle rumen, and its impact on the in vitro microbial fermentation of wheat straw. RuXyn394, a member of the glycosyl hydro...

Interactions between wine proteins and polysaccharides have the capacity to regulate the stability, shelf-life, and turbidity of red wines. Understanding these macromolecular interactions helps with maintaining stability and reproducing high quality...

This study compared the performance of Clostridium ljungdahlii and Clostridium aceticum in the fermentation of fructose and C1-gasses (CO, CO₂, N₂) to produce valuable products such as ethanol and acetic acid. In heterotrophic fermentation (fructose)...

Acidogenic fermentation (AF) of wastes provides a biological route to volatile fatty acids (VFA) production as an alternative to fossil hydrocarbons. As VFA are acidic in nature, the pH in AF typically drops, affecting the fermentation performance. T...

By-products generated in the winemaking industry contain compounds with health-promoting properties, which can be reintroduced into the food production chain. This study evaluated the use of a by-product from the industrial processing of grapes as an...

Vitamin K (VitK) is a vital nutrient that is newly recognized to support bone and cardiovascular health. As a nutraceutical, VitK is produced via plant extraction and bacterial fermentation. This study examined the potential anti-inflammatory and ost...

A large amount of cattle manure is generated in the US every year, creating challenges for ecosystem sustainability while offering opportunities for value-added products through biorefinery. While methods like land application, composting, and anaero...

The objective of this study was to explore the rumen fermentation characteristics, bacterial diversity, community composition, and metabolite profiles of rice straw from three distinct varieties. Straws from two hybrid rice varieties, Lingliangyou 26...

Our classical strain improvement began with an isolate showing 28% palmitic and 60% oleic acids. UV and chemical mutagenesis enhanced our strain’s productivity, carbon yield, and oleic acid content. The iterative methodology we used involved th...

Hair growth is crucial for physiological functions and psychological well-being, leading to an increasing demand for research in this area. While low-molecular ginsenosides have been shown to promote hair growth in mice, studies on their effects are...

This paper studies the implementation of a system consisting of an electrolyzer connected to a bioelectricity generator set that operates using vinasse biogas. Data on total ethanol production across all regions of Brazil were collected, and two etha...

The purified yeast strain H4, identified as W. anomalus through morphological, genetic, and phylogenetic analyses, was characterized and compared to a commercial Saccharomyces cerevisiae strain X16. W. anomalus H4 exhibited distinct morphological fea...

Cottonseed meal (CSM) has emerged as an alternative source of protein-based poultry feed because of the increasing cost and scarcity of soybean meal. However, it contains toxic gossypol, which restricts its use. This systematic review examines solid-...

Low-cost enzyme production is considered a feasibility factor in enzyme commercialization. Okara, a high-nutritional agro-industrial residue from soybean processing, was performed as a medium for bacterial amylase production to save costs and increas...

The washed process is one of the traditional post-harvest processes of coffee beans, which include selective harvesting, flotation, pulping, submerged fermentation underwater, washing, and drying operations. During the washed processing, fermentation...

Hypocrellins (HYPs), naturally occurring 3,10-xylene-4,9-anthracene derivatives sourced from Shiraia bambusicola and Hypocrella bambusae, exhibit significant photobiological activities. Despite their capability for generating a high yield of reactive...

As a high-value bulk chemical, ethylene glycol plays an important role in many fields such as energy, the chemical industry, and automobile manufacturing. At the same time, methanol, as an economical and efficient raw material, has shown great potent...

In this study, both apple slices and apple pomace, the by-product of apple juice processing, were subjected to vinegar fermentation. The pectins extracted from the solid residue of vinegar-fermented apple slices (FAP) and apple pomaces (FAPP) were co...

Precise control of operational parameters in anaerobic digestion reactors is crucial to avoid imbalances that could affect biomethane production and alterations in the microbiota. Restoring the methanogenic microbiota after a failure is essential for...

Maize gluten feed is rich in micronutrients and serves as a good source of protein and dietary fiber, but also contains anti-nutritional factors. In this study, fermentation conditions for the degradation of phytic acid and water-unextractable arabin...

Biomethane production via biogas upgrading is regarded as a future renewable gas, further boosting the biogas economy. Moreover, when upgrading is realized by the biogas CO₂ conversion to CH₄ using surplus renewable energy, the process of upgrading b...

Bifidobacterium is among the dominant flora in the healthy intestine of the human body. It has many probiotic effects such as lowering cholesterol, inhibiting tumors, and regulating immunity. However, fluctuations in culture conditions during cultiva...

Natural vinegar fermentation is a complex process influenced by the interplay between microbial communities and metabolites. This study examined the interplay between the microbiome and the metabolome over a three-month period, with samples collected...

Anaerobic digestion is a well-established technology for the sustainable production of biogas. However, to be used as a substitute for natural gas or as vehicle fuel, it is necessary to remove carbon dioxide (CO₂) and other contaminants from biogas t...

The shortage of feed protein has plagued the development of the animal husbandry industry in China. In this study, a new three-stage fermentation technology for producing distillers’ grain feed protein was developed by introducing Aspergillus n...

This study evaluated the effects of clinoptilolite (CTL) and ferulic acid (FA) supplementation on in vitro ruminal fermentation characteristics, gas production, and bacterial abundance. Treatments were arranged in a 2 × 2 factorial design (FA:...

Anaerobic ammonium oxidation (anammox), as an efficient and low-carbon method for nitrogen removal from wastewater, faces the challenge of slow enrichment of functional bacteria. In this study, the enrichment of anammox bacteria Candidatus Brocadia w...

The production of recombinant enzymes, primarily used for obtaining pure and functional target molecules, holds significant importance in modern biotechnology. This study aimed to obtain and characterize recombinant, extracellularly expressed α...

Clostridium ragsdalei was found to produce (S)-2-hydroxyisovalerate (2-HIV) as a novel product in addition to acetate, ethanol, and d-2,3-butanediol in heterotrophic (d-xylose), autotrophic (CO), and mixotrophic (d-xylose + CO) conditions. Mixotrophi...

The importance of the valorization of industrial by-products has led to increasing research into their reuse. In this research, the innovative by-product okara oat flour, derived from the vegetable beverage industry, was studied. Oat okara sourdough...

This review focuses on the genetic and biotechnological aspects of the biosynthesis of ramoplanin (Rmp), enduracidin (End), and other related lipodepsipeptide antibiotics, herein named collectively ramoplanin and ramoplanin-related lipodepsipeptide (...