Essential Oils from the Leaves and Flowers of &amp;lt;i&amp;gt;Callistemon viminalis&amp;lt;/i&amp;gt;: Chemical Characterization and Evaluation of the Insecticide and Antifungal Activities

Sales, Thaís Aparecida; Cardoso, María das Graças; Guimarães, Luiz Gustavo de Lima; Camargo, Karen Caroline; Rezende, Danubia Aparecida Carvalho Selvati; Brandão, Rafaela Magalhães; Souza, Rafaela Vieira; Ferreira, Vanúzia Rodrigues Fernandes; Marques, Ana Cristina; Magalhães, Maísa Lamounier; Nelson, David Lee

doi:10.4236/ajps.2017.810171

Cited by 15 publications

(10 citation statements)

References 18 publications

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“…The chemical composition of the extracted essential oil reveals the presence of eucalyptol with higher percent area in GC-MS, beside alpha-Pinene and Alpha-terpineol were also important components, this result is match with previous studies (19,20), while Viridiflorol and its isomers appear in higher percent area than alpha-Pinene and alpha-Terpineol relative to the studies, which may indicate the different concentration of compounds present in Iraqi cultivated plant. Viridiflorol is an interesting natural compound show significant anticancer activity against cancer cells from lung, brain, and breast according to a novel study (21), also antioxidant, anti-inflammatory, and anti-mycobacterium activity were observed in recent study (22).…”

Section: Discussionsupporting

confidence: 88%

“…According to the study results, Callistemon viminalis essential oils have a good antimicrobial activity against Gram-positive bacteria, while no antifungal activity observed. The increase of essential oil quantity or using alcoholic diluent with different oil concentration not only the concentrate oil or increase the duration of exposure to oil may reveal or enhance the well-known inhibitory effect over fungal growth for the plant essential oil as in the studies (30,31). The results show good antibacterial activity of the oil against Grampositive bacteria, especially, on Streptococcus pneumoniae strain with inhibition zone comparable to that of vancomycin antibiotic drug, while the Gram-negative bacterial strains, Salmonella enteritidis, Pseudomonas aeruginosa, and Escherichia coli were not susceptible to the essential oil.…”

Section: Discussionmentioning

confidence: 99%

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In Vitro Antimicrobial Activity of Essential Oil Derived from Callistemon viminalis Aerial Part

Asaad¹

2023

Al-Kindy Col. Med. J

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Background: Essential oils extracted from plants have been widely used in antimicrobial activity, particularly the Callistemon viminalis, with a high number of essential oils extracted. Objectives: To identify the chemical composition of essential oil derived from Callistemon viminalis and evaluates its antimicrobial activity against selected bacterial and fungal strains. Subjects and methods: During the study, the antimicrobial activity of different selected essential oils on some bacteria (Escherichia coli, Pseudomonas aeruginosa, Salmonella enteritidis, Staphylococcus aureus, and Streptococcus pneumonia) and fungus (Candida albicans) was evaluated. The MicroScan WalkAway automated device was used to confirm the identification of the bacteria microorganisms and the germ tube and microscopy detection confirmed the fungus identity of specific morphological features after growth on corn meal agar, used in this study. Results: the GC-MS analysis reveal that the chemical composition of the essential oil was contained Eucalyptol (41.17%) area, Viridiflorol (8.43%) area, Alpha-Pinene (4.53%) area, Alpha-Terpineol (4.53%) area and others. The essential oil shows activity against Staphylococcus aureus with inhibition zone diameter of 10 mm, and for Streptococcus pneumoniae, with ihibition zone of 22 mm. Conclusion: The highest antimicrobial activity was against S. aureus and S. pneumonia of Gram-positive bacteria. The study result show that resistance from Gram-negative bacteria and resistance from fungus C. albicans to the oil. These varying results of bacterial suseptabilty may be based on the construction of the bacterial cell wall between Gram-positive and Gram-negative bacteria. The essential oil components detected with higher percent area in GC-MS from C. viminalis are Eucalyptol, alpha-Pinene, Viridiflorol, beta-Eudesmol, and alpha-Tocopherol.

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Section: Discussionsupporting

confidence: 88%

Section: Discussionmentioning

confidence: 99%

In Vitro Antimicrobial Activity of Essential Oil Derived from Callistemon viminalis Aerial Part

Asaad¹

2023

Al-Kindy Col. Med. J

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“…Another study on terpene antifungal activity has also suggested the synergic activity of terpene within plant extracts [ 46 ]. Although isolation and characterization of phytochemical content were not carried out in this study, based on studies by other researchers, secondary metabolites present in the DCM: methanol extract would have caused the observed effects [ 14 , 47 ].…”

Section: Discussionmentioning

confidence: 99%

The Effects of Tormentic Acid and Extracts from Callistemon citrinus on Candida albicans and Candida tropicalis Growth and Inhibition of Ergosterol Biosynthesis in Candida albicans

Bvumbi

Fru

Stevens

et al. 2021

The Scientific World Journal

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Candida albicans and Candida tropicalis are the leading causes of human fungal infections worldwide. There is an increase in resistance of Candida pathogens to existing antifungal drugs leading to a need to find new sources of antifungal agents. Tormentic acid has been isolated from different plants including Callistemon citrinus and has been found to possess antimicrobial properties, including antifungal activity. The study aimed to determine the effects of tormentic and extracts from C. citrinus on C. albicans and C. tropicalis and a possible mode of action. The extracts and tormentic acid were screened for antifungal activity using the broth microdilution method. The growth of both species was inhibited by the extracts, and C. albicans was more susceptible to the extract compared to C. tropicalis. The growth of C. albicans was inhibited by 80% at 100 μg/ml of both the DCM: methanol extract and the ethanol: water extract. Tormentic acid reduced the growth of C. albicans by 72% at 100 μg/ml. The effects of the extracts and tormentic acid on ergosterol content in C. albicans were determined using a UV/Vis scanning spectrophotometer. At concentrations of tormentic acid of 25 μg/ml, 50 μg/ml, 100 μg/ml, and 200 μg/ml, the content of ergosterol was decreased by 22%, 36%, 48%, and 78%, respectively. Similarly, the DCM: methanol extract at 100 μg/ml and 200 μg/ml decreased the content by 78% and 88%, respectively. A dose-dependent decrease in ergosterol content was observed in cells exposed to miconazole with a 25 μg/ml concentration causing a 100% decrease in ergosterol content. Therefore, tormentic acid inhibits the synthesis of ergosterol in C. albicans. Modifications of the structure of tormentic acid to increase its antifungal potency may be explored in further studies.

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“…Pathogenic attacks also caused metabolite and transcriptional changes in Medicago sativa (Suzuki et al 2005). When Sales et al (2017) compared alpha-pinene content of the flowers and leaves of Callistemon viminalis, the flowers contained 21.48% while the leaves only contained about 10.28%.…”

Section: Discussionmentioning

confidence: 99%

Banana Flower-Insect Interaction: Alpha-Pinene as Potential Attractant for the Insect Vector of Banana Blood Disease

Masriany¹,

Esyanti

Dwivany

et al. 2020

HAYATI J Biosci

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Volatile metabolites are produced by plants for self-defense and as communication mediators with the environment. Terpenes are volatiles emitted as odorant cues for herbivores and microorganisms. This study was aimed to investigate volatile metabolites produced by banana flowers that attract insect vectors of BBD. The volatile metabolites from banana flowers were extracted by headspace-solid phase microextraction (HS-SPME) and identified by gas chromatography–mass spectrometry (GC-MS). It was apparent that the concentrations of the metabolite alpha-pinene gradually increased from the first to the the third stage. Comparison of metabolites produced by symptomatic banana male flowers for BBD infection with non-symptomatic ones showed that the concentration of alpha-pinene was higher in symptomatic male flowers. In addition, preference for alpha-pinene was tested on three insect vector species (Rhodesiella bhutanensis, Drosophila sp., and Musca sp.), analyzed by M. Anova p<0.001, F(1.5) =12.539 and Duncan test. Results showed that the insect vectors were mostly attracted to 20 µl volume of alpha-pinene compared to the other volumes and that alpha-pinene functioned as an attractant to these insects. This research is important for the formulation of attractants for insect vectors of BBD to control transmission of banana blood disease.

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Essential Oils from the Leaves and Flowers of <i>Callistemon viminalis</i>: Chemical Characterization and Evaluation of the Insecticide and Antifungal Activities

Cited by 15 publications

References 18 publications

In Vitro Antimicrobial Activity of Essential Oil Derived from Callistemon viminalis Aerial Part

In Vitro Antimicrobial Activity of Essential Oil Derived from Callistemon viminalis Aerial Part

The Effects of Tormentic Acid and Extracts from Callistemon citrinus on Candida albicans and Candida tropicalis Growth and Inhibition of Ergosterol Biosynthesis in Candida albicans

Banana Flower-Insect Interaction: Alpha-Pinene as Potential Attractant for the Insect Vector of Banana Blood Disease

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