Application of essential oils of Ocimum gratissimum and Cymbopogon citratus as bioinsecticides for the management of two major biting‐sucking insects (Bemisia tabaci Gennadius and Jacobiella fascialis Jacobi) and the improvement of seed and fiber quality of cotton plants in Ivory Coast

2021 ◽  
Author(s):  
Koffi Christophe KOBENAN ◽  
Brou Julien KOUAKOU ◽  
Malanno KOUAKOU ◽  
Pitou Woklin Euloge KONE ◽  
Ibrahime Kouadio SINAN ◽  
...  
Keyword(s):  
Essential Oils ◽  
Bemisia Tabaci ◽  
Ivory Coast ◽  
Fiber Quality ◽  
Cymbopogon Citratus ◽  
Ocimum Gratissimum ◽  
Cotton Plants

scholarly journals Antioxidant Effects of Ocimum Gratissimum Leaf Essential Oils as a Supplement to Extender on Chilled Canine Sperm Quality

2020 ◽  
Author(s):  
Vui Van Nguyen ◽  
Samorn Ponchunchoovong ◽  
Sajeera Kupittayanant ◽  
Pakanit Kupittayanant
Keyword(s):  
Essential Oils ◽  
Sperm Quality ◽  
Antioxidant Properties ◽  
Quality Parameters ◽  
Control Group ◽  
Dependent Manner ◽  
Ocimum Gratissimum ◽  
Significant Difference ◽  
Antioxidant Effects

Abstract Background:Oxidative stress during chilled storage is a major problem withcanine sperm. To improve the quality of chilled canine sperm during storage, many synthetic antioxidants have been examined, but different outcomes were investigated depending on antioxidant properties. The bioactive compounds of essential oils fromOcimum gratissimumleaves are known as a natural antioxidant source. This study aimed to evaluate the antioxidant effects of essential oils from Ocimum gratissimumleavesas a supplement in extender on chilled canine sperm during 12 days of storage. Results:The results showed thatlow concentrations of Ocimum gratissimum essential oils (25, 50, and 100µg/mL) have beneficial effectson sperm quality, whereasOcimum gratissimumessential oils athigh levels (above 200µg/mL) have harmful effects. Specifically, the addition of 100µg/mL ofOcimum gratissimum essential oilsto the extender had the greatestbeneficial effect in improving the quality of chilled canine sperm, and had a significant difference in all sperm quality parameters except motility when compared to the control group (p<0.05). Conclusions:Ocimum gratissimum essential oilshave an impact on chilled canine sperm quality in a dose-dependent manner, and the best results areachieved with a maximum dose ofOcimum gratissimum essential oils of 100µg/mL.

Synergistic action between fractions of essential oils from Cymbopogon citratus, Ocimum gratissimum and Thymus vulgaris against Penicillium expansum

Food Control ◽  
2012 ◽  
Vol 23 (2) ◽  
pp. 377-383 ◽  
Author(s):  
J. Nguefack ◽  
O. Tamgue ◽  
J.B. Lekagne Dongmo ◽  
C.D. Dakole ◽  
V. Leth ◽  
...  
Keyword(s):  
Essential Oils ◽  
Synergistic Action ◽  
Penicillium Expansum ◽  
Thymus Vulgaris ◽  
Cymbopogon Citratus ◽  
Ocimum Gratissimum

Effects of essential oils from Cymbopogon citratus (DC) Stapf., Lippia sidoides Cham., and Ocimum gratissimum L. on growth and ultrastructure of Leishmania chagasi promastigotes

2008 ◽  
Vol 104 (5) ◽  
pp. 1053-1059 ◽  
Author(s):  
Valéria C. S. Oliveira ◽  
Daniela M. S. Moura ◽  
José A. D. Lopes ◽  
Paulo P. de Andrade ◽  
Nicácio H. da Silva ◽  
...  
Keyword(s):  
Essential Oils ◽  
Leishmania Chagasi ◽  
Cymbopogon Citratus ◽  
Ocimum Gratissimum ◽  
Lippia Sidoides

Toxicity and gastric tolerance of essential oils from Cymbopogon citratus, Ocimum gratissimum and Ocimum basilicum in Wistar rats

2008 ◽  
Vol 46 (7) ◽  
pp. 2493-2497 ◽  
Author(s):  
P. Fandohan ◽  
B. Gnonlonfin ◽  
A. Laleye ◽  
J.D. Gbenou ◽  
R. Darboux ◽  
...  
Keyword(s):  
Essential Oils ◽  
Wistar Rats ◽  
Ocimum Basilicum ◽  
Cymbopogon Citratus ◽  
Ocimum Gratissimum

scholarly journals Sugarcane Leaf Scald Disease in Côte d'Ivoire: Pathogenicity and Biocontrol of Xanthomonas albilineans Isolates

2019 ◽  
pp. 1-11
Author(s):  
N’guessan Aya Carine ◽  
Kouamé Konan Didier ◽  
Kassi Koffi Fernand Jean-martial ◽  
Kouamé Koffi Gaston ◽  
Konan Dawa Richard ◽  
...  
Keyword(s):  
Essential Oils ◽  
Cote D'ivoire ◽  
Côte D’Ivoire ◽  
Inhibition Zone ◽  
Cymbopogon Citratus ◽  
Cote D’Ivoire ◽  
Leaf Scald ◽  
Ocimum Gratissimum ◽  
Côte D'ivoire ◽  
Xanthomonas Albilineans

Aims: The present investigations describes bactericidal potential of essential oil for management of Xanthomonas albilineans (Ashby. 1929) Dowson 1943, pathogen responsible for sugarcane Leaf scald disease in Côte d'Ivoire. Study Design: the study was conducted at the Ferké 1 sugar mill and the Laboratory of Plant Physiology of Felix Houphouët BOIGNY University. Methodology: Diseased leaves specimens showing signs of X. albilineans presence were collected from sugarcane industrial plantations in Côte d'Ivoire. Pathogenicity was confirmed by observing Koch’s postulates under semi-controlled conditions. Asymptomatic leaves, obtained after 60 days of culture, were inoculated at three points by infiltration with bacterial suspension calibrated at 108 bacteria/ml. Apparition of small tan-brown necrotic lesions on the leaf blade, parallel to the veins and prolonged to the ends by a discolored vascular bundle confirmed that disease is caused by Xanthomonas albilineans. Three essential oils of aromatic plants whose antibacterial properties are recognized were used at 100; 300; 500; 1000 and 2000 ppm in comparison with Callicuivre (56% copper oxychloride) used as reference product. Results: The aqueous solutions based on these essential oils induced an inhibition zone of bacterial growth proportional to the dose applied and the incubation period. Thus, on day 5 of incubation, the essential oil solution of Ocimum gratissimum L. at 100 ppm induced an average inhibition zone diameter not significantly different from the one induced by the Cymbopogon citratus (DC.) Stapf solution at 300 ppm and the one of copper oxychloride at 1000 ppm. At 1000 ppm, Zingiber officinale Roscoe, Cymbopogon citratus (DC.) Stapf and Ocimum gratissimum L essential oils induced equivalent inhibition rates (6 mm) that were higher than that of the control (3.5 mm). Conclusion: sugarcane varieties cultivated at the Ferké 1 sugar mill complex, despite the selection for resistance are threatened by Leaf Scald Disease, which is significantly expressed on variety R585. Cymbopogon citratus (DC.) Stapf and Ocimum gratissimum L oils have the strongest antibacterial activity and may be useful to control Leaf Scald Disease.

scholarly journals Chemical Composition and Insecticidal Activity of Essential oils of two Aromatic plants from Ivory Coast against Bemisia tabaci G. (Hemiptera: Aleyrodidae)

2011 ◽  
Vol 6 (8) ◽  
pp. 1934578X1100600
Author(s):  
Etienne V. Tia ◽  
Augustin A. Adima ◽  
Sébastien L. Niamké ◽  
Gnago A. Jean ◽  
Thibaud Martin ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Essential Oils ◽  
Bemisia Tabaci ◽  
Insecticidal Activity ◽  
Ivory Coast ◽  
Insect Pest ◽  
Fumigant Toxicity ◽  
Aromatic Plants ◽  
Lethal Time

Essential oils of aromatic plants with insecticidal properties are nowadays considered as alternative insecticides to protect cultures from attack by insect pest. The aims of the present work were to evaluate the toxicity of the essential oils vapors of two aromatic plants ( Lippia multiflora Mold. and Aframomum latifolium K. Schum) against Bemisia tabaci and to characterize their chemical composition. The highest fumigant toxicity against B. tabaci adults was observed with the L. multiflora oil: by exposure to 0.4 μL/L air, the lethal time inducing 90% mortality (LT90) was below 2 hours for this essential oil whereas it reached 15 h in the case of the A. latifolium oil. Both oils were analyzed by GC-FID and GC-MS on two capillary columns. The oil of L. multiflora contained a majority of oxygenated terpenoids mainly represented by the two acyclic components linalool (46.6%) and ( E)-nerolidol (16.5%); the oil of A. latifolium was dominated by hydrocarbonated terpenoids among them β-pinene (51.6%) and β-caryophyllene (12.3%) were the two major components.

scholarly journals Comparative efficacy of essential oils of three aromatic plants as alternatives in the control of Phytophthora spp., agent of cocoa tree (Theobroma cacao L.) black pod disease in Côte d'Ivoire

2021 ◽  
Vol 15 (4) ◽  
pp. 1398-1409
Author(s):  
Klotioloma Coulibaly ◽  
F. J.M. Koffi Kassi ◽  
Adama Ouattara ◽  
B. F. Gogbe-Dibi ◽  
P. Walet N’guessan ◽  
...  
Keyword(s):  
Essential Oils ◽  
Aromatic Plants ◽  
Eucalyptus Citriodora ◽  
Cymbopogon Citratus ◽  
Ocimum Gratissimum ◽  
Black Pod ◽  
Black Pod Disease ◽  
Cocoa Tree

This study aimed at comparing the efficacy of essential oils from three aromatic plants species (Cymbopogon citratus, Eucalyptus citriodora and Ocimum gratissimum) in vitro and in vivo against two Phytophthora strains (Phytophthora palmivora and P. megakarya) in a view to developing new biofongicides for the control of cocoa tree black pod disease. Essential oils were applied at four different concentrations (0.5; 1; 3 and 5 mL/L) in vitro and in vivo on leaf discs of three cocoa clones (NA32, PA150 and SCA6) whichsusceptibility is known. As results, all three essential oils significantly (p˂ 0.05) reduced in vitro mycelial growth of both Phytophthora strains and also reduced the leaf susceptibility to these strains. Inhibition rates in vitro of Phytophthora strains mycelial growth ranged from 83.80 to 100% for the essential oils of Cymbopogon citratus and Ocimum gratissimum species and from 17.7 to 100% for which of Eucalyptus citriodora species. In the biotests, the leaf susceptibility index of clone NA32 (susceptible) was reduced from 3.14 to 0.40. This correspond to reduction rates ranged from 64.87 to 86.70% of leaf susceptibility to both Phytophthora strains. Essential oils (HS and HO) from Cymbopogon citratus and Ocimum gratissimum species were most effective than which from Eucalyptus citriodora species. However, all three essential oils revealed antifungal properties. Therefore, they could be recommended as biofungicides for a sustainable control of cocoa tree black pod disease in Côte d'Ivoire.    

scholarly journals Control of Sugarcane Smut Disease: Evaluation of the In vitro Fungitoxicity of Three Essential Oils

2020 ◽  
pp. 34-41
Author(s):  
Yao Kouadio Jacques-Edouard ◽  
Kouamé Konan Didier ◽  
Kouamé Koffi Gaston ◽  
Kassi Koffi Fernand Jean-Martial ◽  
N’guessan Aya Carine ◽  
...  
Keyword(s):  
Essential Oils ◽  
Mycelial Growth ◽  
Zingiber Officinale ◽  
Inhibitory Effects ◽  
Cymbopogon Citratus ◽  
Ocimum Gratissimum ◽  
Sporisorium Scitamineum ◽  
Fungitoxic Effect ◽  
Production Areas

The sugarcane smut disease caused by Sporisorium scitamineum occurs in all production areas. In order to contribute to the management of this disease, a study was carried out in vitro conditions. The aim of this study was to evaluate the antifungal efficacy and to determine the inhibitory concentration of the essentials oils of Ocimum gratissimum, Zingiber officinale and Cymbopogon citratus upon two strains B and Z of Sporisorium scitamineum. These oils were tested on mycelial growth of colonies, spores’ production and teliospores germination. The results showed a variable fungitoxic effect of the oils according to doses. Mycelial growth and spores production were totally inhibited (100%) from 1000 ppm by all the oils. The 90% inhibitory concentrations (IC90) obtained were 880.37 ppm, 847.83 ppm and 805.75 ppm for Ocimum gratissimum, Zingiber officinale and Cymbopogon citratus, respectively. The germination of teliospores was completely reduced by the three essential oils from 500 ppm upwards. Propiconazole had strong inhibitory effects at 400 ppm with a very low IC50 and the IC90 ranged from 305 ppm to 323.36 ppm. Moreover, at the level of the strains, no difference in resistance was observed These oils could provide a good means of controlling sugarcane smut.

Mosquito larvicidal activity of essential oils of Cymbopogon citratus and Thymus vulgaris grown in Cameroon

Planta Medica ◽  
2007 ◽  
Vol 73 (09) ◽  
Author(s):  
EG Nkouaya Mbanjo ◽  
F Tchoumbougnang ◽  
PM Jazet Dongmo ◽  
ML Sameza ◽  
PH Amvam Zollo ◽  
...  
Keyword(s):  
Essential Oils ◽  
Larvicidal Activity ◽  
Thymus Vulgaris ◽  
Cymbopogon Citratus ◽  
Mosquito Larvicidal Activity
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