Special Issue "Bioconversion of Agricultural Wastes into High-Nutrition Animal Feed"

A special issue of Fermentation (ISSN 2311-5637). This special issue belongs to the section "Industrial Fermentation".

Deadline for manuscript submissions: 31 August 2023 | Viewed by 1149

Special Issue Editors

Department of Bioproducts and Biosystems Engineering, University of Minnesota at Twin Cities, Minneapolis, MN 55455, USA
Interests: fermentation biotechnology; bioprocess optimization; microbial fermentation; biofuel production; anaerobic culture; media optimization; bioreactors; enzyme fermentation; ethanol fermentation; animal feed
Prof. Dr. Bo Hu
E-Mail Website
Guest Editor
Department of Bioproducts and Biosystems Engineering, University of Minnesota Twin Citiesdisabled, Minneapolis, MN, USA
Interests: feed; advances in conversion of biomass and waste to chemicals and fuels; state of the art of bioconversion and bioprocess

Special Issue Information

Dear Colleagues,

Food from animal sources contributes 25% of global protein consumption and 18% of global calorie consumption. It also provides a variety of micronutrients such as vitamins, riboflavin, calcium, iron, and zinc in sufficient amounts, which are difficult to achieve from plant-sourced foods. The demand for animal-source foods such as meat and milk is expected to increase by 57% and 48%, respectively, by 2050 due to rising incomes, growing population and urbanization in many parts of the world. Due to the continually increasing price of corn and soybean meal since 2019 caused mainly by the global pandemic and unstable international politics, the producers of swine, cattle and chicken have faced the highest level of feed cost inflation. Feed cost can account for 60–70% of the total cost of animal production, which directly affects the prices of animal-source proteins available for human consumption. Therefore, developing feed from low-cost crops or upcycling current agro-industrial by- and co-products are critical for reducing the overall cost of animal production and the price of animal-source protein, reducing food–feed competition and making animal production sustainable with a low-carbon footprint.

This Special Issue will focus on biotechnological innovations in novel feed development for monogastric animals (swine, poultry and fish) and ruminant animals (cattle, sheep and goat), including but not limited to the evaluation of different feedstocks, the evaluation of existing and new microorganisms, bioprocessing strategies such as solid-state fermentation (SSF), submerged fermentation (SmF), co-culture fermentation, sequential fermentation, the combination of physiochemical treatment with fermentation, fermented feed with in vitro and in vivo feeding test and animal performance evaluation, feed fermentation to co-produce potential high-valued bioproducts, techno-economic analysis and the life-cycle assessment of feed bioprocessing.

Therefore, I invite authors to submit original research articles, critical reviews, and short communications related to the topics of this Special Issue, “Bioconversion of Agricultural Wastes into High-Nutrition Animal Feed”.

Dr. Sun Xiao
Prof. Dr. Bo Hu
Guest Editors

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 2000 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.


  • agricultural waste
  • microorganisms
  • fermentation
  • animal feeding ingredients
  • animal nutrition
  • value-added bioproducts
  • techno-economic analysis
  • life-cycle assessment

Published Papers (1 paper)

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Corn Stover Silage Inoculated with Ferulic Acid Esterase Producing L. johnsonii, L. plantarum, L. fermentum, and L. brevis Strains: Fermentative and Nutritional Parameters
Fermentation 2023, 9(4), 331; https://doi.org/10.3390/fermentation9040331 - 27 Mar 2023
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Corn stover (CS) is an abundant lignocellulosic by-product of the grain industry. Ferulic acid esterase producing (FAE+)-lactobacilli can potentially improve ensiled forages’ nutritive value through the hydrolysis of ferulic acid ester bonds present in cell walls during the fermentation process, but this has [...] Read more.
Corn stover (CS) is an abundant lignocellulosic by-product of the grain industry. Ferulic acid esterase producing (FAE+)-lactobacilli can potentially improve ensiled forages’ nutritive value through the hydrolysis of ferulic acid ester bonds present in cell walls during the fermentation process, but this has not been addressed in CS silage. In this study, we characterized 8 FAE+ lactobacilli regarding their FAE activity and inoculant aptitude: Lactobacillus (L.) johnsonii (CRL2237, CRL2238, CRL2240), L. plantarum (ETC182, CRL046, CRL2241), L. fermentum CRL1446 and L. brevis CRL2239. Next, 25% dry matter (DM) CS mini silos were prepared and either not inoculated (UN) or inoculated with each strain (105 CFU g fresh matter−1). Compared to UN, DM loss was significantly reduced in CRL046 and CRL2239, and organic matter increased in CRL2241-inoculated silages. Although the rest of the digestibility measures were not improved, in situ acid detergent fiber degradability (ADFD) was increased by the CRL2238 strain when compared to UN. Results in inoculated silages were not correlated with FAE activity quantification or growth/acidification studies in a CS-derived culture broth. This study demonstrates the potential of several FAE+ lactobacilli strains as CS inoculants and encourages further research. Full article
(This article belongs to the Special Issue Bioconversion of Agricultural Wastes into High-Nutrition Animal Feed)
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