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Processes
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Advances in the Composition and Extraction Process of Natural Extracts...
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Advances in the Composition and Extraction Process of Natural Extracts to Insects and Microorganisms Management

A special issue of Processes (ISSN 2227-9717). This special issue belongs to the section "Biological Processes and Systems".

Deadline for manuscript submissions: 30 September 2025 | Viewed by 1358

Special Issue Editors

Prof. Dr. Miguel Angel Ramos-López

E-Mail Website
Guest Editor
Laboratorio de Compuestos Naturales Insecticidas, Facultad de Química, Universidad Autónoma de Querétaro, Cerro de las Campanas s/n, Col. Las Campanas, 76010 Queretaro, Mexico
Interests: natural products; entomology insecticide activity; insectistatic acivity; bioactive compounds
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Juan Campos Guillén

E-Mail Website
Guest Editor
Laboratorio de Biología Molecular de Microorganismos, Facultad de Química, Universidad Autónoma de Querétaro, Cerro de las Campanas s/n, Col. Las Campanas, 76010 Queretaro, Mexico
Interests: molecular diagnostic; pathogenic microorgan-ism in insect

Special Issue Information

Dear Colleagues,

Natural products from plant extracts and essential oils constitute an effective alternative for managing agricultural pests and diseases since they have a variety of biological activities, such as insecticides, antifeedants, deterrents, antimicrobials, etc.

Many natural compounds are used to manage pests and diseases, such as alkaloids, terpenoids, flavonoids, phenylpropanoids, and glycosides, among others, which can be different extraction processes.

This Special Issue aims to increase knowledge about natural extracts' composition and extraction process, their identification methods, their mechanism of action, and their activity against agricultural pests and diseases.

Prof. Dr. Miguel Angel Ramos-López
Prof. Dr. Juan Campos Guillén
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. Processes 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 2400 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

  • natural products
  • entomology insecticide activity
  • bioactive compounds
  • molecular diagnostic
  • pathogenic microorganism in insect

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Further information on MDPI's Special Issue policies can be found here.

Published Papers (2 papers)

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Research

11 pages, 932 KiB  
Article
Piper aduncum Essential Oil: Toxicity to Sitophilus zeamais and Effects on the Quality of Corn Grains
by Weverton Peroni Santos, Lucas Martins Lopes, Gutierres Nelson Silva, Marcela Silva Carvalho and Adalberto Hipólito de Sousa
Processes 2025, 13(5), 1363; https://doi.org/10.3390/pr13051363 - 29 Apr 2025
Abstract
Stored product pests are controlled primarily through applying pyrethroid and organophosphate insecticides or through fumigation with phosphine (PH3). However, several populations of weevils are resistant to these insecticides. Essential oils appear to be safe alternatives for both humans and the environment. [...] Read more.
Stored product pests are controlled primarily through applying pyrethroid and organophosphate insecticides or through fumigation with phosphine (PH3). However, several populations of weevils are resistant to these insecticides. Essential oils appear to be safe alternatives for both humans and the environment. The objective was to investigate the toxicity of Piper aduncum essential oil (PAEO) to Sitophilus zeamais and evaluate its effects on corn grain quality during the four-month storage period. This study was conducted in two stages. In the first stage, the toxicity of PAEO at concentrations lethal to 50 and 95% of insects (LC50 and LC95) was estimated. The second step evaluated the degree of infestation, water content, apparent specific mass, loss of mass, electrical conductivity, and percentage of germination of grains at 0, 30, 60, 90, and 120 days after exposure to PAEO, deltamethrin (pyrethroid), and the control treatment. PAEO presents toxicity to S. zeamais. The LC50 and LC95 values are 298.50 µL kg−1 and 585.20 µL kg−1, respectively. The increases in infestation degree, water content, electric conductivity, and mass loss, as well as reductions in apparent specific mass and germination, show the loss of corn quality during the 120-day storage period, being more significant when no product is applied. PAEO delays the loss of quality of the grains, presenting a greater capacity to preserve the grains for a longer period. Full article
(This article belongs to the Special Issue Advances in the Composition and Extraction Process of Natural Extracts to Insects and Microorganisms Management)
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18 pages, 4545 KiB  
Article
Optimization of Mexican Oregano Essential Oil (Lippia Graveolens) Extraction with Fungicidal and Oomyceticidal Effects Against Plant Pathogens
by Octavio Valdez-Baro, Isabel Cruz-Lachica, Juan Manuel Tovar-Pedraza, José Basilio Heredia, Pedro de Jesús Bastidas-Bastidas, Juan Pablo Manjarrez-Quintero and Raymundo Saúl García-Estrada
Processes 2025, 13(2), 490; https://doi.org/10.3390/pr13020490 - 10 Feb 2025
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Abstract
Botanical extracts are being considered for integration into disease management programs to control plant pathogenic fungi and oomycetes. A promising extract with potential is the essential oil of Lippia graveolens. However, its extraction process has not been optimized. Since optimizing process conditions [...] Read more.
Botanical extracts are being considered for integration into disease management programs to control plant pathogenic fungi and oomycetes. A promising extract with potential is the essential oil of Lippia graveolens. However, its extraction process has not been optimized. Since optimizing process conditions can impact fungicidal and/or oomyceticidal effects, this research implemented time, temperature, and solid/liquid ratio conditions to maximize the fungicidal and oomyceticidal effects. The effectiveness was evaluated through parameters of mycelial growth inhibition, spore germination inhibition, minimum inhibitory and fungicidal/oomyceticidal concentration for the fungi Gilbertella persicaria, Agroathelia rolfsii, and Colletotrichum gloeosporioides, as well as the oomycete Phytophthora capsici. Optimal conditions were as follows: time: 46.27 min; temperature: 329.34 °C; and solid/liquid ratio: 80.35 g/L. In general, the optimized treatment was more effective in A. rolfsii ≥ P. capsica > G. persicaria ≥ C. gloeosporioides in all assays. These results demonstrate the fungicidal and oomiceticidal effects of L. graveolens essential oil, with potential for commercial product formulation. Full article
(This article belongs to the Special Issue Advances in the Composition and Extraction Process of Natural Extracts to Insects and Microorganisms Management)
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