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Plants Extracts: Biological Activities and Antimicrobial Properties

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Applied Biosciences and Bioengineering".

Deadline for manuscript submissions: closed (10 June 2023) | Viewed by 2196

Special Issue Editors


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Guest Editor
Department of Biotechnology, University of the Western Cape, Cape Town 7530, South Africa
Interests: biotechnology; heavy metals; metabolomics; plant-microbe interaction; plant science; signalling molecules
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
Green Technologies Research Center of Excellence, Faculty of Science and Agriculture, School of Agricultural and Environmental Sciences, University of Limpopo, Private Bag X1106, Sovenga 0727, South Africa
Interests: biomolecules and biochemistry of natural products (tannin content; phenolic composition and antioxidant capacity of indigenous plants foods/feeds); toxicology and mutagenicity of medicinal plants; foods/feeds
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Medicinal plants are a natural source of bioactive compounds demonstrating a wide range of biological activity. Bioactive compounds derived from medicinal plant extracts have been used to improve human health and wellbeing for centuries. The pharmacological activity of medicinal plants derives from their secondary metabolites, which are somewhat more sparse than primary molecules, such as carbohydrates, proteins, and lipids. Plant secondary metabolites are commonly responsible for the antimicrobial properties of medicinal plants and offer clues to manufacture new structural types of antimicrobial and antifungal chemicals that are comparatively safe to humans and animals. Microbial metabolites have been the target of numerous innovative biotechnology studies on developing new bioactive products capable of exerting antimicrobial activity against important phytopathogens, controlling plant diseases, and reducing the damage caused by such infections. This Special Issue of Applied Sciences aims to compile detailed summaries and present the most recent research findings on medicinal plant extracts, with an emphasis on their biological activity and antimicrobial properties.

Dr. Ashwil Klein
Dr. Ashwell Ndhlala
Guest Editors

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Keywords

  • antimicrobial activity
  • medicinal plants
  • phytochemistry
  • plant extracts

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Published Papers (1 paper)

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Research

19 pages, 2149 KiB  
Article
Biocompatibility of Membranes Based on a Mixture of Chitosan and Lythri herba Aqueous Extract
by Irina Mihaela Iancu, Verginica Schröder, Manuela-Rossemary Apetroaei, Ruxandra Mihaela Crețu, Horațiu Mireșan, Adina Honcea, Valeriu Iancu, Laura Adriana Bucur, Gabriela Mitea and Georgiana Atodiresei-Pavalache
Appl. Sci. 2023, 13(14), 8023; https://doi.org/10.3390/app13148023 - 9 Jul 2023
Cited by 2 | Viewed by 1757
Abstract
In the current context of concern for the improvement and protection of environmental conditions, emphasis is placed on the provision of non-toxic, eco-friendly, renewable biomaterials to replace established chemical substances. Lythri herba is the aerial part of the plant species Lythrum salicaria L., known [...] Read more.
In the current context of concern for the improvement and protection of environmental conditions, emphasis is placed on the provision of non-toxic, eco-friendly, renewable biomaterials to replace established chemical substances. Lythri herba is the aerial part of the plant species Lythrum salicaria L., known in the scientific literature especially for its content of tannins and total polyphenols, which highlight its antioxidant, hemostatic, antibacterial and antidiarrheal properties. Chitosan is a biopolymer widely used in industry and medicine due to its abundance in nature, its biodegradability, lack of toxicity and the ease with which it can be transformed into several basic forms (hydrogel, membrane, sponge). The aqueous solutions and membranes obtained in this study by merging these two natural resources were biologically tested in terms of genotoxicity (SOS-Chromo assay), hemolytic activity, thrombin generation activity and bacterial adhesion to reveal outwardly the lack of these properties and their use for medical purposes. The results of the current study attest to the absence of mutagenic and slight hemolyzing properties, thus supporting the possibility of using this extract and membrane in medical and pharmaceutical therapeutic practice. The surface parameters of membranes were examined and important influences at thrombin activity were found. Also, bacterial adhesion results showed a correlation between Lythri herba and chitosan concentrations and membranes’ appearances (swelling, stability). The results show that the membranes could be a promising material for biomedical applications. Full article
(This article belongs to the Special Issue Plants Extracts: Biological Activities and Antimicrobial Properties)
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