scholarly journals Actividad antifúngica de Cymbopogon citratus contra Colletotrichum gloeosporioides

2017 ◽  
Vol 28 (2) ◽  
pp. 465 ◽  
Author(s):  
Alexander Francisco Pérez Cordero ◽  
Leonardo Miguel Chamorro Anaya ◽  
Deimer Calixto Vitola Romero ◽  
Jesús María Hernández Gómez
Keyword(s):  
Essential Oil ◽  
Essential Oils ◽  
Inhibitory Activity ◽  
Colletotrichum Gloeosporioides ◽  
Chemical Characterization ◽  
Positive Control ◽  
Negative Control ◽  
Cymbopogon Citratus ◽  
A Value

The objective of this research was to evaluate in vitro the inhibitory activity of essential oils from fresh leaves of Cymbopogon citratus (lemongrass) against Colletotrichum gloeosporioides in yam. The research was conducted in the department of Sucre, Colombia. The essential oils of C. citratus were collected in the municipalities of Sincelejo, La Union and Sampues, in September and October 2015. The essential oil was extract from fresh leaves using the microwave-assisted hydrodistillation. Concentrations of 5000, 8000 and 10 000 ppm of each essential oil were prepared. An absolute control, a positive control (benomyl 1 g/l) and a negative control was used. An inhibitory activity was obtained by using the direct seeding on surface of the potato-dextrose-agar method and it was expressed as percentage of inhibition rate. The chemical characterization of essential oils was performed by gas chromatography coupled to mass spectrometry. The highest percentages of antifungal index were observed in the lemongrass from Sincelejo at concentrations of 5000, 8000 and 10 000 ppm, after in La Union at 8000 and 10 000 ppm, and finally at Sampues at 10 000 ppm, with a value of 97.77%; the effect was similar to the positive control with benomyl 1 g/l. Citral was the main constituent of the essential oils extracted. The essential oils obtained from the three municipalities showed antifungal activity against C. gloeosporioides. 

Chemical composition, acetylcholine esterase and Anti-bacterial activities of essential oils of Elaeosilenum thapsioides (Desf.) Maire from Algeria

2021 ◽  
Vol 21 ◽  
Author(s):  
Zakaria Barbeche ◽  
Hocine Laouer ◽  
Ramazan Erenler ◽  
Mohamed Hajji ◽  
Guido Flamini ◽  
...  
Keyword(s):  
Essential Oil ◽  
Essential Oils ◽  
Inhibitory Activity ◽  
Research Work ◽  
Chemical Characterization ◽  
Diffusion Method ◽  
Aerial Parts ◽  
Ache Inhibitory Activity

Background: Traditionally, The Algerian medicinal plant Elaeosilenum thapsioides have been used for many diseases. Objective: The present research work is aimed to explore the chemical and biological characterization of essential oil of, Elaeoselinum thapsioides (Desf.) Maire. Methods : The essential oils were obtained by hydrodistillation of different Elaeosilenum thapsioides (Apiaceae) aerial parts samples collected from two different regions (Mahouane and Megres) Setif, Eastern Algeria. The chemical characterization of the obtained essential oils was investigated in the present work for the first time by GC and GC-MS. Besides, they were evaluated for their in-vitro acetylcholinesterase (AChE) inhibitory activity whose enzyme hyperactivity is involved in Alzheimer’s disease. Using Ellman’s spectrophotometric method, additionally, their in-vitro antimicrobial activity was assessed by the disc diffusion method. Both activities were performed at various oil concentrations. Results: The GC/MS analysis of the aerial parts (leaves, stems, flowers, and seeds) essential oils of E. thapsioides revealed the presence of dominant compounds and others in small quantities, identifying 47 chemical molecules. Monoterpene hydrocarbons were the main components, ranging from 72.78 % to 99.13 %. Oxygenated monoterpenes and oxygenated sesquiterpenes ranged between (1.37 % -17.25 %) and (0.12 % -3.53 %) in leaves and stem essential oils. Sesquiterpene hydrocarbons were present in small to large quantities in the essential oils of both populations, with contents ranging from 0.69 % to 13.44 %. For the Isothiocyanates, their presence was recorded in leaves and stem essential oils from Mahouane and Merges with 9.73 % and 3.72 %, consecutively. Indeed, the essential oil of the Mahouane stem showed the highest AChE inhibitory activity among all the tested essential oils. Whereas the highest antibacterial activity was shown by the essential oil obtained from Megres leaves against Bacillus cereus ATCC 11778. Conclusion: The oils exhibited a moderate inhibitory activity in both activities.

scholarly journals Lemongrass (Cymbopogon Citratus) Essential Oil Inhibits Candida Albicans Growth in Vitro

Biomedika ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 142-147
Author(s):  
Yoga Mulia Pratama ◽  
Bryan Pandu Permana
Keyword(s):  
Candida Albicans ◽  
Essential Oil ◽  
Positive Control ◽  
Negative Control ◽  
Control Group ◽  
High Morbidity ◽  
Cymbopogon Citratus ◽  
Group I ◽  
Inhibition Zones

Candidiasis is an important nosocomial infection with high morbidity value, high mortality rate, and expensive clinical cost. However, public access to well-developed treatment is not acquired. Current medicines mostly used like -azol drugs had been showing the resistant effects because of the long period use of the same medicines. Alternative medicines like herb medicine are discussed to reduce multi-resist infections, such as lemongrass Cymbopogon citratus essential oil. This study aims to know the effect of lemongrass essential oil on the growth of Candida albicans in vitro. Laboratory experimental (in vitro) was conducted in this research. Candida albicans strains were being used as the objects, which were picked by random sampling. Candida albicans were divided into 12 groups of treatment, the group I was treated with ethanol 96% as the negative control, group II with fluconazole 25μg as the positive control, and group III-XII with Cymbopogon citratus essential oil with 10%, 20% to 100% concentrated. The diameter of inhibition zones was measured after 2x24 hours incubation. The data was analyzed by post-hoc Mann Whitney test with SPSS 18.0 (p<0.05 considered as significant). Cymbopogon citratus essential oil showed antifungal activity to the Candida albicans began in the 10% to 100% concentration (p<0.05). Inhibition zones with the 50% to 100% concentration had similar results to the positive control (p>0.05). The Cymbopogon citratus essential oil has an antifungi effect toward Candida albicans in vitro significantly by the negative control.

scholarly journals Chemical Characterization and Antidiabetic Activity of Essential Oils from Pelargonium graveolens Leaves

2021 ◽  
Vol 9 (1) ◽  
pp. 109-113
Author(s):  
Javed Ahamad ◽  
Subasini Uthirapathy
Keyword(s):  
Essential Oil ◽  
Essential Oils ◽  
Chemical Constituents ◽  
Chemical Characterization ◽  
Study Finding ◽  
Antidiabetic Activity ◽  
Chemical Components ◽  
Diabetic Patients ◽  
Pelargonium Graveolens

Pelargonium graveolens (Geranium) is a source of the finest quality of fragrance and its essential oils are used as antibacterial, and antifungal agents. The aim of the current research is to determine chemical constituents in the essential oil of P. graveolens by GC-MS and evaluate its antidiabetic activity via α-glucosidase inhibition assay. The chemical composition of P. graveolens essential oil was determined by GC/MS and its antidiabetic activity was assessed through inhibition of α-glucosidase enzyme in in-vitro models. GC-MS analysis determines 36 chemical components in the essential oil of P. graveolens leaves, and citronellyl isovalerate (10.41 %), menthol (9.61 %), linalool (8.63 %), p-menthone (6.31 %), and geranyl tiglate (4.99 %) were recorded as major constituents. The essential oil of P. graveolens leaves showed concentration dependant inhibition of α-glucosidase enzyme ranging from 28.13±1.41 to 74.24±2.53 µg/mL for concentration ranging from 31.25 to 1000 µg/mL. The IC50 values for of P. graveolens and acarbose were found as 93.72±4.76 and 80.4±2.17 µg/mL, respectively against the α-glucosidase enzyme. The study finding explores the chemical components of P. graveolens growing in the Iraqi Kurdistan region and scientifically supported its possible use in diabetic patients for controlling postprandial hyperglycemia.

scholarly journals Antimicrobial activity of Cymbopogon citratus (Poaceae) essential oil on Streptococcus mutans biofilm and cytotoxic effect on keratinocytes and fibroblasts

2018 ◽  
Vol 66 (4) ◽  
pp. 1519
Author(s):  
Mailen Ortega Cuadros ◽  
Adriana Patricia Tofiño Rivera ◽  
Luciano Jose Merini ◽  
Maria Cecilia Martinez Pabon
Keyword(s):  
Antimicrobial Activity ◽  
Dental Caries ◽  
Essential Oil ◽  
Streptococcus Mutans ◽  
Human Fibroblasts ◽  
Positive Control ◽  
Negative Control ◽  
Cymbopogon Citratus ◽  
Significant Difference ◽  
Efficient Alternative

Dental caries is a pathology of multifactorial origin and currently natural products are an efficient alternative treatment; The work sought to evaluate the antimicrobial activity of the Cymbopogon citratus essential oil and the citral and myrcene components against Streptococcus mutans ATCC UA159, as well as their cytotoxicity on keratinocytes and human fibroblasts. The viability effect against Streptococcus mutans on biofilms was evaluated through exposure to the three substances by using the MBEC technique-high-throughput at concentrations of 1, 0.1, and 0.01 µg/mL and chlorhexidine as positive control. The cytotoxicity of the compounds was evaluated on keratinocytes and fibroblasts through the MTT reduction technique, using 0.5 mM H2O2 as cell-death control (negative control) and ethanol 1% as vehicle control (positive control). The three substances evaluated had effects on the viability of Streptococcus mutans with mortality between 74% and 96%, without significant difference among them (p > 0.393); additionally, no cytotoxicity was evident on keratinocytes and fibroblasts in a 24-h treatment. The substances evaluated showed significant antimicrobial effects; hence, these should be studied further as potential co-adjuvants to prevent dental caries that cause minor adverse effects

scholarly journals Chemical composition and antifungal activity of essential oils from four Asteraceae plants grown in Egypt

2018 ◽  
Vol 73 (7-8) ◽  
pp. 313-318 ◽  
Author(s):  
Rose Vanessa Bandeira Reidel ◽  
Simona Nardoni ◽  
Francesca Mancianti ◽  
Claudia Anedda ◽  
Abd El-Nasser G. El Gendy ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Antifungal Activity ◽  
Essential Oil ◽  
Essential Oils ◽  
Inhibitory Activity ◽  
First Time

Abstract The objective of the present paper was the assessment of the chemical composition of the essential oils from four Asteraceae species with a considerable food, medicinal, and agricultural value, collected in Egypt, together with their in vitro inhibitory activity against molds and yeasts. The essential oil of Launaea cornuta flowers was also evaluated for the first time, but because of its very low yield (<0.01%), no antifungal test was performed.

scholarly journals Insecticidal and Biting Deterrent Activities of Magnolia grandiflora Essential Oils and Selected Pure Compounds against Aedes aegypti

Molecules ◽  
2020 ◽  
Vol 25 (6) ◽  
pp. 1359
Author(s):  
Abbas Ali ◽  
Nurhayat Tabanca ◽  
Betul Demirci ◽  
Vijayasankar Raman ◽  
Jane M. Budel ◽  
...  
Keyword(s):  
Essential Oil ◽  
Aedes Aegypti ◽  
Essential Oils ◽  
Screening Program ◽  
Negative Control ◽  
Magnolia Grandiflora ◽  
Plant Parts ◽  
Pure Compounds ◽  
Index Value

In our natural products screening program for mosquitoes, we tested essential oils extracted from different plant parts of Magnolia grandiflora L. for their insecticidal and biting deterrent activities against Aedes aegypti. Biting deterrence of seeds essential oil with biting deterrence index value of 0.89 was similar to N,N-diethyl-3-methylbenzamide (DEET). All the other oils were active above the solvent control but the activity was significantly lower than DEET. Based on GC-MS analysis, three pure compounds that were only present in the essential oil of seed were further investigated to identify the compounds responsible for biting deterrent activity. 1-Decanol with PNB value of 0.8 was similar to DEET (PNB = 0.8), whereas 1-octanol with PNB value of 0.64 showed biting deterrence lower than 1-decanol and DEET. The activity of 1-heptanol with PNB value of 0.36 was similar to the negative control. Since 1-decanol, which was 3.3% of the seed essential oil, showed biting deterrence similar to DEET as a pure compound, this compound might be responsible for the activity of this oil. In in vitro A & K bioassay, 1-decanol with MED value of 6.25 showed higher repellency than DEET (MED = 12.5). Essential oils of immature and mature fruit showed high toxicity whereas leaf, flower, and seeds essential oils gave only 20%, 0%, and 50% mortality, respectively, at the highest dose of 125 ppm. 1-Decanol with LC50 of 4.8 ppm was the most toxic compound.

scholarly journals LOWERING URIC ACID EFFICACY TEST OF THE COMBINED EXTRACT OF UNCARIA GAMBIR (HUNTER) ROXB. AND CAESALPINIA SAPPAN L. IN VIVO AND IN VITRO

2018 ◽  
Vol 11 (8) ◽  
pp. 166
Author(s):  
Sri Ningsih ◽  
Fahri Fahrudin
Keyword(s):  
Antioxidant Activity ◽  
Uric Acid ◽  
Inhibitory Activity ◽  
Positive Control ◽  
Polyphenol Content ◽  
Caesalpinia Sappan ◽  
In Vivo Experiments ◽  
A Value

 Objective: Hyperuricemia (high uric acid levels) prevalence increased year by year. This study was aimed to elaborate the in vitro xanthine oxidase (XO) inhibitory activity and in vivo lowering hyperuricemic effect of Uncaria gambir (Hunter) Roxb) (gambir), Caesalpinia sappan L. (secang) and the combined extract of secang and gambir (formulae extract [FE]).Methods: Gambir and secang extracts were prepared by maceration with ethanol and FE was the proportioned combination of these two extracts. XO inhibitory activity was determined by measuring the formation of uric acid in the xanthine/XO system in vitro using allopurinol as a positive control at 100 ug/mL. Antioxidant activity was by 1,1-diphenyl-2-picrylhydrazyl radical reducing methods. The in vivo experiments were conducted in the oxonate-induced hyperuricemia rat model, in which FE was gavaged p.o. at the arrange dose of 75, 150, and 300 mg/kg bw for 2 weeks. Polyphenol content was measured using Folin–Ciocalteu reagent spectrophotometrically.Results: The XO inhibitory activity of FE was 80% of allopurinol, while secang and gambir were 98% and 50%, respectively. The strength was appropriate to the total polyphenol content, in which it decreased in the order of secang (99%) > FE (86%) > gambir (46%). Furthermore, FE at all tested doses was able to decrease uric acid levels. FE also demonstrated antioxidant activity with a value of 74% relative to Vitamin C at 4 ug/mL.Conclusion: These studies could be concluded that FE exhibited the ability to decrease uric acid level so that it was potential to be developed further as a uric acid-lowering agent.

scholarly journals Chemical characterization and determination of in vivo and in vitro antifungal activity of essential oils from four Eucalyptus species against the Hemileia vastatrix Berk and Br fungus, the agent of coffee leaf rust

2020 ◽  
pp. 1379-1384
Author(s):  
Alex Rodrigues Silva Caetano ◽  
Sara Maria Chalfoun ◽  
Mario Lúcio Vilela Resende ◽  
Caroline Lima Angélico ◽  
Wilder Douglas Santiago ◽  
...  
Keyword(s):  
Gas Chromatography ◽  
Antifungal Activity ◽  
Essential Oil ◽  
Essential Oils ◽  
Chemical Characterization ◽  
Eucalyptus Species ◽  
Hemileia Vastatrix ◽  
Antifungal Activities

Essential oils, also known as volatile oils, are substances produced through the secondary metabolism of plants. In this study, we determined the chemical composition and the in vitro and in vivo antifungal activity of the essential oils from four species of Eucalyptus, Eucalyptus citriodora, Eucalyptus camaldulensis, Eucalyptus grandis and Eucalyptus microcorys, against the Hemileia vastatrix fungus. The essential oils from these four species of Eucalyptus were extracted from their leaves by the hydrodistillation technique using a modified Clevenger apparatus. The chemical characterization was performed by gas chromatography coupled with a mass spectrometer detector and by gas chromatography using a flame ionization detector. The antifungal activities of the essential oils against H. vastatrix were studied by evaluating the percentage of spore germination using the microdilution test for in vitro assays. The curative and preventive effects were evaluated in in vivo tests. The principal constituents of the essential oil from E. citriodora were citronellal, citronellol and isopulegol, while E. camaldulensis produced 1,8-cineole, α-terpineol and α-pinene. 1,8-cineole, α-pinene and α-terpineol were obtained from E. grandis and 1,8-cineole, α-pinene and trans-pinocarveol were the principal components in the essential oil of E. microcorys. In vitro and in vivo antifungal activities against the fungus under study were observed for most of the essential oils, except the essential oil from E. microcorys, for which no preventive antifungal activity was observed. Only the curing of infection by the H. vastatrix fungus was observed with this oil.

scholarly journals EFFICACY OF FOUR ESSENTIAL OILS ON FUSARIUM HEAD BLIGHT CAUSED BY FUSARIUM OXYSPORUM F. SP. RADICIS LYCOPERSICI (FORL), A FUNGAL TELLURIC PATHOGEN OF TOMATO GROWN UNDER COVER

2021 ◽  
Vol 9 (11) ◽  
pp. 1018-1030
Author(s):  
Doumbouya Mohamed ◽  
◽  
Kouame Koffi Gaston ◽  
Brou Kouassi Guy ◽  
NGuessan Aya Carine ◽  
...  
Keyword(s):  
Essential Oil ◽  
Essential Oils ◽  
Fusarium Oxysporum ◽  
Fusarium Head Blight ◽  
Growth Parameters ◽  
Curative Treatment ◽  
Life Stages ◽  
Cymbopogon Citratus ◽  
Head Blight

Fusarium head blight caused by Fusarium oxysporum f. sp. Radicis-lycopersici (FORL) is a constraint to tomato cultivation in Korhogo, Côte dIvoire. To control this disease, the antifungal activity of essential oils extracted from certain plants was evaluated in comparison with that of a synthetic fungicide for use. In vitro tests were performed on the different life stages of FORL. The in vivo evaluations consisted in carrying out two modes of treatment (curative and preventive) on plants of a susceptible variety of tomato inoculated with FORL. The results showed that the essential oils significantly reduced the different life stages of F.oxysporum f. sp. Radicis-lycopersici (FORL) as did the synthetic product. Thus, the essential oil Cymbopogon citratus at concentrations of 4000 and 6000 ppm strongly inhibited in vitro the different stages of FORL. In preventive and curative treatment, the essential oils not only improved the growth parameters of tomato plants but also reduced the incidence and severity of diseases. Thus, it was found that Cymbopogon citratus (4000 ppm) in preventive treatment, and Banko plus (250 ppm) in curative treatment reduced the mortality rate of FORL up to 6.66% and improved the growth parameters and reduced the flowering time of the tomato plant.The essential oil of C. citratus could be used for biological control of F. oxysporum f. sp. Radicis lycopersici.

scholarly journals Comparative Chemical, Cytotoxicity and Antileishmanial Properties of Essential Oils from Chenopodium ambrosioides

2011 ◽  
Vol 6 (2) ◽  
pp. 1934578X1100600 ◽  
Author(s):  
Lianet Monzote ◽  
Marcelina R. Nance ◽  
Marley García ◽  
Ramón Scull ◽  
William N. Setzer
Keyword(s):  
Essential Oil ◽  
Essential Oils ◽  
Chemical Characterization ◽  
In Vitro Cytotoxicity ◽  
Chenopodium Ambrosioides ◽  
Popular Medicine ◽  
Lead Compounds ◽  
Antileishmanial Activities ◽  
Treatment Alternatives

In countries where leishmaniasis is endemic, there are not very many treatment alternatives and most options have problems associated with their use. Plants and their natural products constitute good sources of interesting lead compounds that could be potentially active against Leishmania. Chenopodium ambrosioides is a plant that is widely used in popular medicine and its antiparasitic effects have been documented, including the antileishmanial potentialities of Chenopodium oil. The objective of this study was to determine the chemical composition, in-vitro cytotoxicity and antileishmanial activity of essential oils extracted from C. ambrosioides, which received different treatments prior to extraction. The chemical characterization by GC-MS of the three essential oil samples showed similar composition and the major components were α-terpinene (17.0-20.7%), p-cymene (20.2-21.1%) and ascaridole (30.5-47.1%). The essential oils exhibited similar antileishmanial activities against intracellular amastigote form, with IC50 values between 4.7 and 12.4 μg/mL. However, a lower cytotoxicity was displayed by the essential oil extracted from fresh green vegetable material, which was statistically different ( P < 0.05) from the other samples. This study demonstrated that the prior treatment of plant material did not interfere with the antiparasitic activity of essential oils from C. ambrosioides but did change their cytotoxicity, which should be taken into account in further studies.

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