Fungicidal Potential of Essential Oils and Fractions fromCymbopogon citratus, Ocimum gratissimumandThymus vulgaristo ControlAlternaria padwickiiandBipolaris oryzae, Two Seed-Borne Fungi of Rice (Oryza SativaL.)

Julienne, Nguefack; Nguikwie, Sylvie Kwanga; Fotio, D.; Dongmo, Bernadin Ndongson; Zollo, Paul Henri Amvam; Leth, Vibeke; Nkengfack, Augustin Ephrem; Poll, Leif

doi:10.1080/10412905.2007.9699336

Cited by 48 publications

(38 citation statements)

References 17 publications

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“…This is consistent with a previous study that reported that active compounds isolated by fractionation had higher activity than the original extract (Nguefack et al 2007). As can be seen from Table 6.…”

Section: K Pneumoniae and S Pyogenes Are Importantsupporting

confidence: 82%

Antibacterial Activity of Essential Oil from Abies holophylla against Respiratory Tract Bacteria

Lee¹,

Kim²,

Park³

et al. 2014

Journal of the Korean Wood Science and Technology

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We extracted essential oils from four species (Pinus densiflora, Larix kaempferi, Pinus koraiensis, and Abies holophylla) in the family Pinaceae to investigate their antibacterial activities against respiratory tract bacteria (Klebsiella pneumoniae, Haemophillus influenzae, Streptococcus pyogenes, Streptococcus pneumonia, and Neisseria meningitides). Among the tested oils, that from A. holophylla was showed strong activity based on disc diffusion and broth medium dilution (minimum inhibitory concentration, MIC) assays. Qualitative analysis of A. holophylla oil was carried out by GC-MS; α -pinene, camphene, β -pinene, 3-carene, limonene, bornyl acetate, borneol, β -caryophyllene, α -caryophyllene, caryophyllene oxide, and α -bisabolol were identified as its major constituents. Fractionation by silica gel chromatography was performed to analyze the active constituents of the crude oil. In particular, one fraction containing caryophyllene oxide as the major constituent showed stronger antibacterial activity than the crude oil of A. holophylla. Growth rates of bacterial strains exposed to fraction D were explored by optical density (OD600) measurements while morphology was examined by optical microscopy observations (× 1000). OD600 of K. pneumoniae decreased from 0.2582 to 0.005 in response to treatment with fraction D at a MIC value of 0.31 μ ℓ /mℓ .

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Section: K Pneumoniae and S Pyogenes Are Importantsupporting

confidence: 82%

Antibacterial Activity of Essential Oil from Abies holophylla against Respiratory Tract Bacteria

Lee¹,

Kim²,

Park³

et al. 2014

Journal of the Korean Wood Science and Technology

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“…The results of MIC on moulds are presented in Table 8 The essential oil of A. graveolens is rich in limonene (50.7%) and myrcene (12.5%) whereas thymol (57.9%) and p-cymene (10.3%) were present in that of T. vulgaris. This composition is similar to previous reports by Alfreda and Taka [18] and Nguefack et al [17]. The presence of thymol in these essential oils is among a group of chemicals known as monoterpenes which are the strongest activity against fungus [22].…”

Section: Conc Ag (G/l)supporting

confidence: 77%

“…These results were different to those previously obtained by Nguefack et al [17] who showed a yield of 0.50% for dry T. vulgaris from Dschang region of Cameroon. These variations could be explained by the post-harvest treatment.…”

Section: Yields Of Extraction Of Essential Oilscontrasting

confidence: 57%

Antiradical, Anti-inflammatory and Antifungal Activities of Essential Oils of Two Aromatic Plants: Apium graveolens (Apiaceae) and Thymus vulgaris (Lamiaceae)

Kamdem¹,

Sameza²,

Dongmo³

et al. 2015

JLS

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Abstract:The outbreak of oxidative stress, inflammatory diseases and mycoses, constitute an important public health problem. This could be due to the increase of risk factors, side effects and expensive therapeutic molecules available. In the aim to find the potential spring of new therapeutic molecules with efficient and wide spectrum of action, the antiradical, anti-inflammatory and antifungal activities of two essential oils were evaluated. The essential oils were extracted by hydrodistillation. The antiradical activity was evaluated to use DPPH (2,2-diphenyl-1-picrylhydrazyl) scavenging method and the anti-inflammatory activity was determined using the enzymatic method. The disc diffusion and dilution methods were used to evaluate growth inhibition of three yeasts, three moulds and three dermatophytes. The yields of extraction of Apium graveolens and Thymus vulgaris essential oils were 0.14% and 0.32% respectively. These essential oils showed antiradical properties with respective SC 50 of 0.41 and 0.06 g/L for Apium graveolens and Thymus vulgaris. Only Thymus vulgaris presented an anti-inflammatory activity with an IC 50 of 0.19 g/L. Cryptococcus neoformans was the most susceptible fungal strain while C. albicans was the most resistant one. The results were compared with the standard antifungal. These results show that these essential oils could be exploited as potential spring of molecules endowed with antiradical, anti-inflammatory and antifungal activities.

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“…This high frequency has been reported in previous studies on the seeds of rice in India (Archana and Prakash, 2013) and Pakistan (Khan, 2000;Javaid et al, 2002 (Khan, 2000;Wahid et al, 2001;Javaid et al, 2002;Nguefack et al, 2007). In this study, Pyricularia oryzae, known for a long time as rice seed borne fungus (Manandadhar et al, 1998) was not isolated from any of the rice varieties, confirming the statement by Lamrani et al, (2013) who found that this fungus was less common on seeds.…”

Section: Resultsmentioning

confidence: 50%

“…Most seed borne diseases caused by the fungi pathogens are disastrous as they may decrease seed germination, cause seed discolouration; produce toxins that may be injurious to man and domestic animals. Several seed borne fungi associated with rice seeds have been isolated in many countries including Nigeria (Suleiman and Omafe, 2013); Pakistan (Butt et al, 2011); Egypt (Madbouly et al, 2014), Bangladesh (Ora et al, 2011) and Cameroon (Nguefack, 2007). But to the best of our knowledge, no report is available on seed borne fungi status of rice in Chad.…”

Section: Introductionmentioning

confidence: 96%

Seed-Borne Fungi Associated with Rice Seeds Varieties in Bongor,Chad Republic

Signaboubo¹,

Noumbo²,

Roger³

2016

Int.J.Curr.Microbiol.App.Sci.

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Fungicidal Potential of Essential Oils and Fractions fromCymbopogon citratus, Ocimum gratissimumandThymus vulgaristo ControlAlternaria padwickiiandBipolaris oryzae, Two Seed-Borne Fungi of Rice (Oryza SativaL.)

Cited by 48 publications

References 17 publications

Antibacterial Activity of Essential Oil from Abies holophylla against Respiratory Tract Bacteria

Antibacterial Activity of Essential Oil from Abies holophylla against Respiratory Tract Bacteria

Antiradical, Anti-inflammatory and Antifungal Activities of Essential Oils of Two Aromatic Plants: Apium graveolens (Apiaceae) and Thymus vulgaris (Lamiaceae)

Seed-Borne Fungi Associated with Rice Seeds Varieties in Bongor,Chad Republic

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