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Catalysts
Special Issues
Applications of Catalytic Reactions in Promoting the Health of Organisms
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Applications of Catalytic Reactions in Promoting the Health of Organisms

A special issue of Catalysts (ISSN 2073-4344). This special issue belongs to the section "Biocatalysis".

Deadline for manuscript submissions: 20 September 2024 | Viewed by 346

Special Issue Editors

Prof. Dr. Ryan Tian

E-Mail Website
Guest Editor
Department of Chemistry & Biochemistry, University of Arkansas, Fayetteville, AR 72701, USA
Interests: nanostructures; catalytic; sensing; biomaterial applications
Dr. Zhen Li

E-Mail Website
Guest Editor
School of Food Engineering, Anhui Science and Technology University, Fengyang 233100, China
Interests: photocatalysis; hydrogen evolution; degradation; carbon dioxide reduction; heterojunctions; atomic defects
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Over the past few decades, there has been significant global progress in the field of organism health. However, with this progress comes serious challenges in protecting the health of plants, humans, animals, and microorganisms. To address these challenges, innovative and effective solutions are required. Catalytic reactions, as a powerful tool, have demonstrated their crucial role in addressing these challenges. Catalytic reactions driven by enzymes, microorganisms, catalysts, and other substances have become crucial means of promoting the health and safety of organisms.

Therefore, we are pleased to announce the launch of our Special Issue, "Applications of Catalytic Reactions in Promoting the Health of Organisms". This issue aims to explore how catalytic reactions contribute to the health of organisms. We cordially invite authors to submit original research papers and review articles that focus on the roles of enzymes, microorganisms, genes, and catalysts in catalytic reactions, as well as their applications in gene studies, microbial control, and the degradation of harmful substances. This Special Issue aims to cover a broad spectrum of topics, including, but not limited to, the degradation of agricultural residues, enzyme catalysis, microbial catalytic reactions, gene catalysis, the removal of harmful substances in crops, and catalytic reactions in animals and plants, to explore new catalytic mechanisms and applications in the field of organism health.

Prof. Dr. Ryan Tian
Dr. Zhen Li
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. Catalysts 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 2700 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.

Keywords

  • catalytic reactions
  • organism health
  • food safety
  • enzyme catalysis
  • disease treatment
  • drug synthesis

Published Papers (1 paper)

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Research

17 pages, 7249 KiB  
Article
Investigating the Inhibitory Factors of Sucrose Hydrolysis in Sugar Beet Molasses with Yeast and Invertase
by Mikael Sjölin, Maria Djärf, Mohamed Ismail, Herje Schagerlöf, Ola Wallberg, Rajni Hatti-Kaul and Mahmoud Sayed
Catalysts 2024, 14(5), 330; https://doi.org/10.3390/catal14050330 - 17 May 2024
Viewed by 229
Abstract
Sugar beet molasses is a low-value byproduct from the sugar industry. It contains significant amounts of sucrose (approx. 50% (w/w)), which can be used for many different applications, for example, as feedstock for the production of fuel (as ethanol) [...] Read more.
Sugar beet molasses is a low-value byproduct from the sugar industry. It contains significant amounts of sucrose (approx. 50% (w/w)), which can be used for many different applications, for example, as feedstock for the production of fuel (as ethanol) and biobased chemicals such as 5-hydoxymethyl furfural (HMF). To produce platform chemicals, sucrose is hydrolyzed into its monomeric C6 sugars: glucose and fructose. When comparing the hydrolysis rates of molasses with a pure sucrose solution, the specific reaction rate is much slower (Qp/x,60min = 93 and 70 gprod L−1 h−1 gcell−1 for pure sucrose and crude molasses, respectively) at the same sucrose concentration (300 g/L) and process conditions. To clarify why molasses inhibits the enzymatic hydrolysis rate, the influence of its viscosity and inorganic and organic composition was investigated. Also, the effects of molasses and treated molasses on pure enzymes, invertase (from Saccharomyces cerevisiae, 0.05 mg/mL), compared with hydrolysis using whole cells of Baker’s yeast (3 mg/mL), were tested. The results indicate an inhibitory effect of potassium (Qp/x,60min = 76 gprod L−1 h−1 gcell−1), generally at high salt concentrations (Qp/x,60min = 67 gprod L−1 h−1 gcell−1), which could be correlated to the solution’s high salt concentrations and possibly the synergistic effects of different ions when applying concentrations that were four times that in the molasses. Also, the viscosity and sucrose purity seem to have an effect, where pure sucrose solutions and thick juice from the sugar mill yielded higher hydrolysis rates (Qp/x,60min = 97 gprod L−1 h−1 gcell−1) than molasses-type solutions with a higher viscosity (Qp/x,60min = 70–74 gprod L−1 h−1 gcell−1). Attempting to further understand the effects of different components on the invertase activity, an in silico investigation was performed, indicating that high salt concentrations affected the binding of sucrose to the active site of the enzyme, which can result in a lower reaction rate. This knowledge is important for future scale-up of the hydrolysis process, since reduced hydrolysis rates require larger volumes to provide a certain productivity, requiring larger process equipment and thereby higher investment costs. Full article
(This article belongs to the Special Issue Applications of Catalytic Reactions in Promoting the Health of Organisms)
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