Essential oils activity from plants of the Brazilian Caatinga on the vegetable leafminer

Oliveira, Andréa Costa; Lima, T. C. da C.; Souza, A. V. de; Gonçalves-Gervásio, Rita de Cássia Rodrigues

doi:10.1590/1983-40632020v5058313

Cited by 5 publications

(3 citation statements)

References 45 publications

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“…In this context, essential oils from various plant species have become potential chemotherapeutic agents due to their antiparasitic properties [ 22 , 23 , 24 ]. Essential oils are insoluble in inorganic solvents (water), while also soluble in organic solvents.…”

Section: Introductionmentioning

confidence: 99%

Cytotoxicity of Essential Oil Cordia verbenaceae against Leishmania brasiliensis and Trypanosoma cruzi

et al. 2021

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The species Cordia verbenacea DC (Boraginaceae), known as the whaling herb and camaradinha, is a perennial shrub species native to the Atlantic Forest. Its leaves are used in folk medicine as an anti-inflammatory, analgesic, antiulcerogenic and curative agent, in the form of teas or infusions for internal or topical use. The present study aimed to verify the cytotoxicity of the essential oil and the leishmanicidal and trypanocidal potential of C. verbenacea. The essential oil was characterized by GC-MS. The in vitro biological activity was determined by anti-Leishmania and anti-Trypanosoma assays. The cytotoxixity was determined using mammalian fibroblasts. The C. verbenacea species presented α-pinene (45.71%), β-caryophyllene (18.77%), tricyclo[2,2,1-(2.6)]heptane (12.56%) as their main compounds. The essential oil exhibited strong cytotoxicity at concentrations below 250 μg/mL (LC50 138.1 μg/mL) in mammalian fibroblasts. The potent anti-trypanosome and anti-promastigote activities occurred from the concentration of 62.5 μg/mL and was considered clinically relevant. The results also demonstrate that at low concentrations (<62.5 μg/mL), the essential oil of C. verbenacea managed to be lethal for these activities. This can be considered an indication of the power used in daily human consumption. Therefore, it can be concluded that the essential oil of C. verbenacea contains a compound with remarkable antiparasitic activities and requires further research.

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Section: Introductionmentioning

confidence: 99%

Cytotoxicity of Essential Oil Cordia verbenaceae against Leishmania brasiliensis and Trypanosoma cruzi

et al. 2021

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“…Among the major compounds 1,8-cineole, p-cymene, caryophyllene and spathulenol were identified by other authors as part of the main constituents of the chemical composition of the EO from C. conduplicatus [ 20 , 21 , 22 , 23 , 24 ]. In their results, these compounds showed similar average concentrations to those found here, with the exception of 1,8-cineole, which showed a concentration of 24.09% [ 21 ].…”

Section: Resultsmentioning

confidence: 99%

Synergistic and Antibiofilm Effects of the Essential Oil from Croton conduplicatus (Euphorbiaceae) against Methicillin-Resistant Staphylococcus aureus

et al. 2022

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Bacterial resistance refers to the ability of bacteria to resist the action of some antibiotics due to the development of adaptation and resistance mechanisms. It is a serious public health problem, especially for diseases caused by opportunistic bacteria. In this context, the search for new drugs, used alone or in combination, appears as an alternative for the treatment of microbial infections, and natural products, such as essential oils, are important in this process due to their structural diversity, which increases the probability for antimicrobial action. The objective of this study was to extract and identify the chemical components of the essential oil from Croton conduplicatus (EOCC), to evaluate the antimicrobial activity, to investigate the effect of the interaction between the EOCC and different antibiotics and to evaluate its antibiofilm potential. The EOCC was obtained by hydrodistillation. Based on chemical characterisation, 70 compounds were identified, with 1.8 cineole (13.15%), p-cymene (10.68%), caryophyllene (9.73%) and spathulenol (6.36%) being the major constituents. The minimum inhibitory concentration (MIC) values of EOCC were 256 and 512 µg mL−1 for methicillin-sensitive and -resistant Staphylococcus aureus strains (MSSA and MRSA), respectively. The combinations of EOCC with the antibiotics oxacillin and ampicillin were synergistic (OXA/EOCC and AMP/EOCC combined decreased the OXA MIC and AMP MIC to 0.5 and 0.25 for MSSA, respectively, and OXA/EOCC and AMP/EOCC combined decreased the OXA MIC and the AMP MIC to 1 and 0.5 for MRSA, respectively) and could modify the resistance profile of MSSA and MRSA strains. The results indicated that EOCC was also able to partially inhibit biofilm formation. Our study presents important information about the chemical composition of EOCC and its antimicrobial potential and provides a reference to determine the mechanisms of action of EOCC and its use in pharmaceutical formulations.

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“…In the melon-producing regions in Brazil, the problematic control of L. sativae with synthetic insecticides has led to studies aiming to search for different control methods, such as botanical insecticides (Oliveira et al 2020) and biological control (Costa-Lima et al 2019). Therefore, the present study aimed to evaluate the susceptibility of populations of L. sativae to three major synthetic insecticides used in melonproducing regions in Northeast Brazil.…”

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Susceptibility of Liriomyza sativae Blanchard (Diptera: Agromyzidae) melon populations to abamectin, cyromazine, and cyantraniliprole

Damasceno

Silva²,

Bernardi

et al. 2022

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Melon is one of the most exported fruits from Brazil. The leafminer fly, Liriomyza sativae (Blanchard) (Diptera: Agromyzidae), is one of the major problems that negatively interfere in the productivity increase in this crop. Chemical control is the most adopted method for this pest; however, producers have reported reduced susceptibility to insecticides. Thus, this study aimed to evaluate the susceptibility of L. sativae larvae to abamectin, cyromazine, and cyantraniliprole from populations collected from two melon crop-producing regions in Northeast Brazil (Juazeiro, BA and Icapuí, CE). The insecticide's lethal concentration 50 (LC50) was obtained in the laboratory using the leaf dip bioassay method with L. sativae larvae. No difference was observed in the LC50 between the populations for the three insecticides. Both populations showed low variation susceptibility for abamectin, cyromazine, and cyantraniliprole.

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Essential oils activity from plants of the Brazilian Caatinga on the vegetable leafminer

Cited by 5 publications

References 45 publications

Cytotoxicity of Essential Oil Cordia verbenaceae against Leishmania brasiliensis and Trypanosoma cruzi

Cytotoxicity of Essential Oil Cordia verbenaceae against Leishmania brasiliensis and Trypanosoma cruzi

Synergistic and Antibiofilm Effects of the Essential Oil from Croton conduplicatus (Euphorbiaceae) against Methicillin-Resistant Staphylococcus aureus

Susceptibility of Liriomyza sativae Blanchard (Diptera: Agromyzidae) melon populations to abamectin, cyromazine, and cyantraniliprole

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