Evidence map›Paper›PMID 31931883›Full record

ArticleParasites & vectors2020

Yeast-encapsulated essential oils: a new perspective as an environmentally friendly larvicide.

Michael J Workman, Bruno Gomes, Ju-Lin Weng, Linnea K Ista, Camila P Jesus, Mariana R David, Marcelo Ramalho-Ortigao, Fernando A Genta, Scott K Matthews, Ravi Durvasula and 1 more

Open access · goldAbstract read
In one paragraph

Article in Parasites & vectors, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
7.0field-weighted citation impact, top 4% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

10 citing papers in PubMed, 48 citations in OpenAlex.

  1. Larvicide activity of yeast-encapsulated orange oil againstCurrent research in parasitology & vector-borne diseases · 2025
    Article
  2. Article
  3. Review
  4. Article
  5. Article
  6. Review
  7. Article
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  10. Plant Natural Products for the Control ofMolecules (Basel, Switzerland) · 2020
    Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

11 authors at 7 institutions in 2 countries.

Michael J WorkmanCenter for Global Health, University of New Mexico Health Sciences Center, Albuquerque, NM, USA.ORCID http://orcid.org/0000-0003-1489-8707
Bruno GomesLaboratório de Bioquímica e Fisiologia de Insetos, Instituto Oswaldo Cruz (IOC-Fiocruz), Rio de Janeiro, Brazil.ORCID http://orcid.org/0000-0003-3877-2359
Ju-Lin WengDepartment of Preventive Medicine and Biostatistics, Uniformed Services University, Bethesda, MD, USA.ORCID http://orcid.org/0000-0002-7705-802X
Linnea K IstaDepartment of Chemical and Biological Engineering, University of New Mexico, Albuquerque, NM, USA.ORCID http://orcid.org/0000-0002-8747-9987
Camila P JesusLaboratório de Bioquímica e Fisiologia de Insetos, Instituto Oswaldo Cruz (IOC-Fiocruz), Rio de Janeiro, Brazil.
Mariana R DavidLaboratório de Mosquitos Transmissores de Hematozoários, Instituto Oswaldo Cruz (IOC-Fiocruz), Rio de Janeiro, Brazil.
Marcelo Ramalho-OrtigaoDepartment of Preventive Medicine and Biostatistics, Uniformed Services University, Bethesda, MD, USA.ORCID http://orcid.org/0000-0002-1490-4946
Fernando A GentaLaboratório de Bioquímica e Fisiologia de Insetos, Instituto Oswaldo Cruz (IOC-Fiocruz), Rio de Janeiro, Brazil.
Scott K MatthewsDepartment of General Preventive Medicine, School of Medicine and Dentistry, University of Rochester, Rochester, NY, USA.
Ravi DurvasulaLoyola University Stritch School of Medicine, Maywood, IL, USA.
Ivy HurwitzCenter for Global Health, University of New Mexico Health Sciences Center, Albuquerque, NM, USA. ihurwitz@salud.unm.edu.
Fundação Oswaldo Cruz · BRUniformed Services University of the Health Sciences · USUniversity of New Mexico · USInstituto Nacional de Ciência e Tecnologia em Entomologia Molecular · BRLoyola University Chicago · USNew Mexico Department of Health · USUniversity of Rochester · US

Funding

CDC HHS 200-2017-93140
6 · The paper itself

Abstract

backgroundEffective mosquito control approaches incorporate both adult and larval stages. For the latter, physical, biological, and chemical control have been used with varying results. Successful control of larvae has been demonstrated using larvicides including insect growth regulators, e.g. the organophosphate temephos, as well as various entomopathogenic microbial species. However, a variety of health and environmental issues are associated with some of these. Laboratory trials of essential oils (EO) have established the larvicidal activity of these substances, but there are currently no commercially available EO-based larvicides. Here we report on the development of a new approach to mosquito larval control using a novel, yeast-based delivery system for EO.

methodsFood-grade orange oil (OO) was encapsulated into yeast cells following an established protocol. To prevent environmental contamination, a proprietary washing strategy was developed to remove excess EO that is adsorbed to the cell exterior during the encapsulation process. The OO-loaded yeast particles were then characterized for OO loading, and tested for efficacy against Aedes aegypti larvae.

resultsThe composition of encapsulated OO extracted from the yeast microparticles was demonstrated not to differ from that of un-encapsulated EO when analyzed by high performance liquid chromatography. After lyophilization, the oil in the larvicide comprised 26-30 percentage weight (wt%), and is consistent with the 60-65% reduction in weight observed after the drying process. Quantitative bioassays carried with Liverpool and Rockefeller Ae. aegypti strains in three different laboratories presented LD

conclusionsThe larvicide based on OO encapsulated in yeast was shown to be highly active (LD

Indexed as

AedesAnimalsCell EncapsulationGreen Chemistry TechnologyInsecticidesLarvaMosquito ControlMosquito VectorsOils, VolatilePlant OilsSaccharomyces cerevisiaeInsecticidesOils, Volatileorange oilPlant OilsEncapsulationEssential oilLarvicideSaccharomyces cerevisiae

Identifiers

PMID31931883
PMCPMC6958686
OpenAlexW3000482744

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.