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Fermentation, Volume 9, Issue 11

2023 November - 69 articles

Cover Story: Corynebacterium glutamicum is prominent in white biotechnology. Metabolic engineering has enabled the production of the antioxidant astaxanthin. Here, a DoE-guided approach was applied to optimize the basic process parameters, the pH, rDOS, aeration rate, as well as inoculation cell density, in lab-scale stirred bioreactors. The DoE-guided approach revealed a bioprocess design with pH 8, an aeration rate of 0.25 vvm, 30% rDOS, and an initial optical density of 1 in the batch mode. These process conditions were successfully applied to a fed-batch process, resulting in a high cell density, with up to 60 g CDW L−1 biomass and 64 mg L−1 astaxanthin, thus demonstrating an about improvement of 900% compared to that of the batch mode. View this paper
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Articles (69)

  • Article
  • Open Access
1 Citations
3,291 Views
16 Pages

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 materia...

  • Article
  • Open Access
1 Citations
2,084 Views
14 Pages

Fermented feed is needed to maintain the vitality of probiotics and cannot be sterilized. Fermented feeds, especially those with added CaCO3, have a high risk of contamination with pathogens. Escherichia coli, Staphylococcus aureus, and Shigella flex...

  • Review
  • Open Access
12 Citations
6,604 Views
12 Pages

Bacterial Interactions with Nanoplastics and the Environmental Effects They Cause

  • Rongyu Wang,
  • Xiaodong Li,
  • Jing Li,
  • Wei Dai and
  • Yaning Luan

Recently, there has been an increase in interest in the relationship between microorganisms and micro/nanoplastics. Particularly in natural environments, bacteria play an important role. For the ecological risk assessment of plastic particles, a prop...

  • Article
  • Open Access
5 Citations
5,564 Views
18 Pages

Screening and Production of Industrially Relevant Enzymes by Bacillus paranthracis Strain MHDS3, a Potential Probiotic

  • Musundwa Locardia Tshisikhawe,
  • Mamonokane Olga Diale,
  • Adrian Mark Abrahams and
  • Mahloro Hope Serepa-Dlamini

The digestive process and intestinal protein absorption are influenced by a variety of factors. Due to their numerous health advantages, including potential favorable effects on protein digestion and absorption, probiotics have gained increased atten...

  • Article
  • Open Access
1 Citations
2,027 Views
16 Pages

Biorefinery Approach for H2 and Acids Production Based on Uncontrolled pH Fermentation of an Industrial Effluent

  • María Eugenia Ibañez-López,
  • Encarnación Díaz-Domínguez,
  • Miguel Suffo,
  • Jacek Makinia,
  • Jose Luis García-Morales and
  • Francisco Jesús Fernández-Morales

In this work, the feasibility of uncontrolled pH acidogenic fermentation of industrial organic effluent from corn-bioethanol production was studied and modelled by using a Monod-based mathematical model. In order to do that, several tests were carrie...

  • Article
  • Open Access
7 Citations
3,548 Views
15 Pages

Enzymatic Hydrolysis of Kraft and Sulfite Pulps: What Is the Best Cellulosic Substrate for Industrial Saccharification?

  • Aleksandr R. Shevchenko,
  • Ksenia A. Mayorova,
  • Dmitry G. Chukhchin,
  • Alexey V. Malkov,
  • Evgeniy A. Toptunov,
  • Vadim D. Telitsin,
  • Aleksandra M. Rozhkova,
  • Ivan N. Zorov,
  • Maria A. Rodicheva and
  • Arkady P. Sinitsyn
  • + 5 authors

Sulfite and kraft pulping are two principal methods of industrial delignification of wood. In recent decades, those have been considered as possibilities to pretreat recalcitrant wood lignocellulosics for the enzymatic hydrolysis of polysaccharides a...

  • Article
  • Open Access
3 Citations
2,291 Views
19 Pages

Dietary NDF/Starch Ratio Modulates Colonic Microbiota and Metabolites in Lambs before and after Weaning

  • Xiaoxia Han,
  • Haibi Zhao,
  • Guohua Liu,
  • Feng Lv,
  • Xin Pang,
  • Fan Yang and
  • Xiaojuan Wang

The neutral detergent fiber (NDF)/starch ratio is a key determinant of the carbohydrate composition in ruminant diets, which affects the development of the gastrointestinal tract and animal growth. In this study, we used a combination of 16S amplicon...

  • Review
  • Open Access
18 Citations
4,781 Views
32 Pages

Exploring the Prospects of Fermenting/Co-Fermenting Marine Biomass for Enhanced Bioethanol Production

  • Mohamed E. H. Osman,
  • Atef M. Abo-Shady,
  • Mostafa E. Elshobary,
  • Mahasen O. Abd El-Ghafar,
  • Dieter Hanelt and
  • Abdelfatah Abomohra

With the rising demands for renewable fuels, there is growing interest in utilizing abundant and sustainable non-edible biomass as a feedstock for bioethanol production. Macroalgal biomass contains a high content of carbohydrates in the form of speci...

  • Article
  • Open Access
10 Citations
6,975 Views
16 Pages

Investigating Yeast–Lactobacilli Interactions through Co-Culture Growth and Metabolite Analysis

  • Stefano Nenciarini,
  • Ana Reis-Costa,
  • Marco Pallecchi,
  • Sonia Renzi,
  • Aldo D’Alessandro,
  • Agnese Gori,
  • Benedetta Cerasuolo,
  • Niccolò Meriggi,
  • Gian Luca Bartolucci and
  • Duccio Cavalieri

The various forms of interactions that microorganisms engage in within fermented foods result in distinct metabolic product patterns. Fermentation products often feature both yeasts and bacteria, each possessing characteristics that can enhance the o...

  • Article
  • Open Access
5 Citations
3,137 Views
14 Pages

The effect of bioelectrochemical anaerobic digestion (BEAD) on the methanogenic performance of brewery wastewater at different organic loading rates (OLRs) was investigated and compared to conventional anaerobic digestion. A continuous BEAD reactor w...

  • Article
  • Open Access
7 Citations
2,783 Views
20 Pages

Comprehensive yeast strain characterization is an important issue for the wine industry as market demands require controlled production of distinctive high-quality wines. Glycosides form an important reservoir of varietal grape wine aroma, and their...

  • Article
  • Open Access
1 Citations
2,297 Views
20 Pages

Microflora play an important role in the fermentation of blueberry wine, influencing the flavor and nutrient formation. Commercial yeasts give blueberry wines an average flavor profile that does not highlight the specific aroma and origin of the blue...

  • Article
  • Open Access
2 Citations
2,345 Views
18 Pages

Ex Vivo Fermentation of Hay and Corn by Rumen Bacteria from Cattle and Sheep

  • Jennifer R. Weinert-Nelson,
  • Donald G. Ely,
  • Michael D. Flythe,
  • Tracy A. Hamilton,
  • Jessica L. Ferrell and
  • Brittany E. Davis

Sheep are often utilized as a model ruminant, despite a lack of functional comparisons of rumen bacterial communities and responses during dietary transitions between sheep and cattle. Therefore, an ex vivo study was conducted to evaluate species dif...

  • Article
  • Open Access
2 Citations
2,764 Views
15 Pages

The probiotic foods market is expanding; however, maintaining probiotics viability is challenging during manufacturing and storage conditions. In this study, a functional ingredient containing whey protein hydrolysate-encapsulated probiotics was stan...

  • Article
  • Open Access
12 Citations
3,580 Views
17 Pages

Valorization of Different Dairy By-Products to Produce a Functional Dairy–Millet Beverage Fermented with Lactobacillus paracasei as an Adjunct Culture

  • Azzah A. A. Alwohaibi,
  • Asmahan A. Ali,
  • Sally S. Sakr,
  • Isam A. Mohamed Ahmed,
  • Raghad M. Alhomaid,
  • Khalid A. Alsaleem,
  • Mohammed Aladhadh,
  • Hassan Barakat and
  • Mohamed F. Y. Hassan

Fermented dairy products not only have a long shelf-life but also have beneficial nutritional values. The products are deficient in dietary fiber and certain bioactive compounds. Adding grains to dairy products is a widespread practice to improve the...

  • Article
  • Open Access
1 Citations
2,003 Views
13 Pages

Recently, a genetically modified microorganism (GMM) detection strategy using real-time PCR technology was developed to control fermentation products commercialized in the food and feed chain, allowing several unexpected GMM contaminations to be high...

  • Article
  • Open Access
1 Citations
2,303 Views
16 Pages

Fructan Catabolism by Rumen Microbiota of Cattle and Sheep

  • Jennifer R. Weinert-Nelson,
  • Isabelle A. Kagan,
  • Donald G. Ely,
  • Michael D. Flythe and
  • Brittany E. Davis

Fructans serve as the primary form of storage carbohydrate in cool-season grasses, but little is known about potential differences in ruminal fermentation of fructans between cattle and sheep. An ex vivo study was conducted to evaluate species differ...

  • Article
  • Open Access
6 Citations
3,925 Views
14 Pages

Polyketides and nonribosomal peptides are major secondary metabolites in members of the genus Streptomyces. Streptomyces cellostaticus is a validly recognized species and the type strain produces cellostatin. However, little is known about whether it...

  • Review
  • Open Access
34 Citations
20,889 Views
50 Pages

Certain Fermented Foods and Their Possible Health Effects with a Focus on Bioactive Compounds and Microorganisms

  • Gülsüm Deveci,
  • Elif Çelik,
  • Duygu Ağagündüz,
  • Elena Bartkiene,
  • João Miguel F. Rocha and
  • Fatih Özogul

Fermented foods refer to beverages or foods made by carefully regulated microbial growth and the enzymatic conversion of dietary components. Fermented foods have recently become more popular. Studies on fermented foods suggest the types of bacteria a...

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Fermentation - ISSN 2311-5637