Essential oil composition and antifungal activity of Melissa officinalis originating from north-Est Morocco, against postharvest phytopathogenic fungi in apples

2017 ◽  
Vol 107 ◽  
pp. 321-326 ◽  
Author(s):  
Y. El Ouadi ◽  
M. Manssouri ◽  
A. Bouyanzer ◽  
L. Majidi ◽  
H. Bendaif ◽  
...  
2015 ◽  
Vol 10 (1) ◽  
pp. 1934578X1501000
Author(s):  
Ahmed Makhloufi ◽  
L. Ben Larbi ◽  
Abdallah Moussaoui ◽  
Hamadi A. Lazouni ◽  
Abderrahmane Romane ◽  
...  

In the present study, the chemical composition of the essential oil obtained from the aerial parts of Aaronsohnia pubescens (Desf.) K. Bremer & Humphries (Asteraceae), a chamomile-like medicinal plant, was studied. Using both GC-MS and GC-FID methods, 58 volatile compounds could be identified representing 96.6% of the total essential oil composition. The main compounds in the essential oil were monoterpene hydrocarbons such as ( Z)-β-ocimene (53.8%), myrcene (15.2%) and α-pinene (7.7%). Moreover, the essential oil of A. pubescens was tested for its antifungal activity against seven strains of phytopathogenic fungi, i.e. Aspergillus niger, A. flavus, Penicillium purpurogenum, P. jensenii, P. expansum, and Fusarium oxysporum f.sp. albedinis, using the disc diffusion method. With the exception of P. jensenii, A. pubescens essential oil demonstrated a considerable antifungal activity against all tested strains. The present results confirm the traditional use of A. pubescens as a food preservative.


LWT ◽  
2013 ◽  
Vol 54 (2) ◽  
pp. 564-569 ◽  
Author(s):  
M. Znini ◽  
G. Cristofari ◽  
L. Majidi ◽  
J. Paolini ◽  
J.M. Desjobert ◽  
...  

2013 ◽  
Vol 8 (6) ◽  
pp. 1934578X1300800
Author(s):  
Nicholas J. Sadgrove ◽  
Graham L. Jones

Essential oils were hydrodistilled from six Zieria species, including two previously not investigated: Z. floydii and Z. odorifera subsp. williamsii, and characterized using GC-MS. Additionally, solvent extracts of leaf material from five of these species were prepared using n-hexane, acetone and methanol as solvents, respectively. These solvent extracts were examined, along with essential oils, for antibacterial activity using micro titer plate broth dilution assays. Antifungal activity against pathogenic Trichophyton species responsible for dermal infections such as Tinea and Kangaroo Pox (uncommon), was examined using a similar method. Results of essential oil characterizations are relatively consistent with those previously reported. Interestingly, the essential oil composition of Z. floydii showed car-3-en-2-one at a concentration of 71%, similar to that observed in a previous study for Z. furfuracea and Z. granulata, thus complementing the observations of A.G. Floyd that Z. floydii is morphologically allied with these two species (CANB 598758). Antimicrobial assays demonstrated relatively high antibacterial and antifungal activity, using both essential oils and solvent extracts. This is particularly true for the n-hexane extract from Z. smithii. We therefore conclude that Zieria species may be a useful source for the development of antiseptic, cosmaceutical and/or topical nutraceutical products. In addition, they may well serve as a source of further novel, purified compounds providing scaffolds for pharmaceutical development in the future.


2008 ◽  
Vol 1 (1) ◽  
pp. 164-171 ◽  
Author(s):  
Koffi Koba ◽  
P W Poutouli ◽  
Christine Raynaud ◽  
Komla Sanda

The aerial parts of Ocimum gratissimum L. (Lamiaceae) harvested in Togo was steam-distilled and investigated for essential oil composition (GC and GC/MS) and in vitro antifungal activities. Thymol (31.79 %), p-cymene (15.57 %) and γ-terpinene (12.34 %) and were the major components of the oil. Other notable components identified in this oil were myrcene (6.94 %) and α-thujene (6.11 %).The in vitro antifungal activity was recorded with the minimum inhibitory concentrations (MICs) ranging from 80 to 150 µl.l-1, 150 to 500 µl.l-1  and from 100 to 150 µl.l-1 respectively on dermatophytes, imperfect filamentous fungi and pathogenic yeasts. Likewise, on tested fungi the minimum fungicidal concentration (MFC) varied from 300 µl.l-1 to 500 µl.l-1, 500 to 700 µl.l-1 and from 250 to 300 µl.l-1, respectively on dermatophytes, imperfect filamentous fungi and pathogenic yeasts. Keywords: O.gratissimum,  Antifungal, Essential oil; Thymol. © 2009 JSR Publications. ISSN: 2070-0237 (Print); 2070-0245 (Online). All rights reserved. DOI: 10.3329/jsr.v1i1.1131 


2010 ◽  
Vol 5 (3) ◽  
pp. 1934578X1000500 ◽  
Author(s):  
Joyce Kelly R. da Silva ◽  
Eloísa Helena A. Andrade ◽  
Elsie F. Guimarães ◽  
José Guilherme S. Maia

The major components of the essential oil of Piper divaricatum from Marajó Island, PA, Brazil, were methyleugenol (63.8%) and eugenol (23.6%), which were identified by GC and GC-MS. Essential oils of Piper species from the Brazilian Amazon are rich in either mono- and sesquiterpenes or phenylpropanoids, as seen in this study. The oil was able to scavenging the DPPH radical, displaying an inhibition varying from 19% to 74%, with an EC50 value of 16.2 ± 1.9 μg mL−1. In the bleaching of β-carotene, the inhibition of the oil oxidation was 60.0 ± 2.7%. The oil gave minimum inhibitory concentrations for the fungi Cladosporium cladosporioides and C. sphareospermum of 0.5 μg and 5.0 μg, respectively. The oil also showed significant brine shrimp larvicidal activity (LC50, 38.8 ± 0.8 μg mL−1).


2010 ◽  
Vol 5 (10) ◽  
pp. 1934578X1000501 ◽  
Author(s):  
Huaping Lei ◽  
Yonggang Wang ◽  
Chang Su ◽  
Fengyin Liang ◽  
Weiwei Su ◽  
...  

The essential oils from leaves, twigs and stems of large trees and shrub-like trees of Thuja sutchuenensis were extracted by hydrodistillation and supercritical fluid extraction, and analyzed by GC and GC–MS. The essential oil composition differed significantly among the three organs, as well as between large trees and shrub-like trees. Furthermore, consistent with the eastern Asia–North American disjunct distribution of the genus, many differences in the essential oil composition between T. sutchuenensis and other Thuja species were apparent. The essential oils exhibited a certain degree of antifungal activity against six strains of human pathogenic fungi.


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