Antifungal activity of Piper guineense of Cameroon

Ngane, Annie Ngono; Biyiti, L.; Bouchet, P.; Nkengfack, Augustin E.; Zollo, Paul Henri Amvam

doi:10.1016/s0367-326x(03)00112-6

Cited by 36 publications

(14 citation statements)

References 5 publications

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“…A. indica and P. guineense extracts were effective in protecting the crops from the various insect pests, with values comparable to the synthetic insecticide (Cymbush R ) used as a positive control. The presence of components capable of influencing the physiology and behaviour of a wide range of insects, mites and nematodes in A. indica and P. guineense extracts (Dhar et al 1998, Schaaf et al 2000, Ngono Ngane et al 2003) may explain their efficacy in the control of insect pests infesting the vegetables studied. The major biologically active components reported in A. indica and P. guineense include: azadirachtin, triterpenoids, piperolein acids, salanine, nimbidin, guineensine, essential oils, sterols and amides, amongst others (Martins et al 1998, Schaaf et al 2000, Siddiqui et al 2000, Muse et al 2003, Ngono Ngane et al 2003, Gopal et al 2007).…”

Section: Insect Pest Abundance As Affected By Plant Extractsmentioning

confidence: 99%

“…In addition, farmers are poorly equipped to handle them. Extracts of Azadirachta indica (neem) and Piper guineense have components capable of influencing the physiology and behaviour of a wide range of insects, mites and nematodes (Dhar et al 1998, Schaaf et al 2000, Ngono Ngane et al 2003. The bark, leaf and seed oil are particularly useful parts of the neem tree (Han et al 2006).…”

Section: Introductionmentioning

confidence: 99%

“…The bark, leaf and seed oil are particularly useful parts of the neem tree (Han et al 2006). Major biologically active components reported in A. indica and P. guineense include: azadirachtin, triterpenoids, piperolein acids, guineensine, essential oils, sterols and amides, among others (Martins et al 1998, Schaaf et al 2000, Siddiqui et al 2000, Muse et al 2003, Ngono Ngane et al 2003, Gopal et al 2007. Most reports on the use of plant extracts are in relation to stored cereals and legumes, with scant information on vegetables.…”

Section: Introductionmentioning

confidence: 99%

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Effect of mixed cropping and plant extracts on the growth, yield and pest control of jute (Corchorus olitorius L.)

Okunlola¹,

Ofuya

2013

Folia Horticulturae

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This study investigated the effect of plant extracts (Azadirachta indica and Piper guineense) on the growth and yield of jute (Corchorus olitorius L.) (Cor) under sole and mixed cropping with Amaranthus hybridus (Ama) and Celosia argentea (Cel). The highest percentage increase in plant height, number of leaves, number of branches and stem girth (130.6, 865.0, 220.4 and 114.0%, respectively) was found in untreated Cor + Cel, cypermethrin treated Cor + Ama, cypermethrin treated Cor and A. indica extract treated Cor + Ama, respectively. The highest percentage increase in shoot weight (71.0%), marketable yield (53.9%) and total biomass (51.5%) was in A. indica treated C. olitorius. Extract treatment had no effect on the number of branches at four, five and seven weeks after planting (WAP) in Cor + Ama + Cel; four, five and six WAP in Cor + Cel; four and six WAP in Cor + Ama; as well as four and five WAP in Cor. The highest percentage increase in leaf fresh weight was obtained in cypermethrin treated Cor (53.3%) and Cor + Ama + Cel (52.2%), while the smallest increase was in P. guineense treated Cor (1.1%) and Cor + Ama (2.5%). The activity of A. indica was independent of time of application while P. guineense was not. Among the extract treated groups, the highest percentage increase in shoot weight (71.0%), marketable yield (53.9%) and total biomass (51.5%) was in A. indica treated Cor. The activity of the extracts against insect pests of sole cropped Cor increased significantly (p < 0.05) with increasing extract concentration. The highest efficiency with the use of P. guineense was 250 g dm -3 at four, five and six WAP (94.0, 92.7 and 90.3%, respectively) and 200 mg dm -3 at seven WAP (81.7%). In the case of A. indica extract, the highest efficiency was found with the use of 200 g dm -3 at four, six and seven WAP (92.7, 85.3 and 100%, respectively). A. indica extract (250 g dm -3 ) treatment gave the highest efficiency at five WAP (100%).

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Section: Insect Pest Abundance As Affected By Plant Extractsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of mixed cropping and plant extracts on the growth, yield and pest control of jute (Corchorus olitorius L.)

Okunlola¹,

Ofuya

2013

Folia Horticulturae

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“…Today, they still continue to play an important role in primary health care and represent a potential source of new drugs. The observation of certain endemic mycoses, the frequent human pathology and the gravity of fungal diseases particularly in developing countries where hygienic conditions are not well mastered, the phenomenon of resistance of fungi against commercial drugs and the high cost of treatment prompted us to search for antifungal extracts derived from Cameroonian plants [1,2] .…”

Section: Introductionmentioning

confidence: 99%

Antifungal Activity of <i>Chromolaena odorata </i>(L.) King & Robinson(Asteraceae) of Cameroon

et al. 2006

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An aqueous ethanol extract of leaves of Chromolaena odorata and some of its fractions were examined for their antifungal properties by dilution methods on solid and liquid media, using yeasts and filamentous fungi. Extract and fractions inhibit the in vitro growth of Cryptococcus neoformans, Microsporum gypseum, Trichophyton mentagrophytes and Trichophyton rubrum with a minimal inhibitory concentration range from 62.5 to 500 µg/ml for the extract and from 25 to 100 µg/ml for fractions. A qualitative chemical analysis of the extract and fractions showed the presence of biologically active constituents such as some coumarins, flavonoids, phenols, tannins and sterols. No toxic effect was observed in mice treated per os with the extract. This study provides a scientific confirmation of the use of Chromolaena odorata in traditional medicine.

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“…They are used to treat convulsion, rheumatism, respiratory diseases, gastrointestinal diseases, and venereal diseases and for uterine muscle stimulation. [10][11][12][13][14] An aqueous extract of P. guineense fruits reportedly exhibits an anticonvulsant effect [15][16][17] ; however, it is not known whether the essential oil of P. guineense (PGEO) shows any behavioral effect. Anticonvulsant agents are known to have a suppressing effect on the CNS.…”

mentioning

confidence: 99%

Inhalation of the Essential Oil of <i>Piper guineense</i> from Cameroon Shows Sedative and Anxiolytic-Like Effects in Mice

Tankam

Ito

2013

Biological & Pharmaceutical Bulletin

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The aromatherapeutical potential of Piper guineense essential oil was investigated in mice via inhalation administration, and the active compounds were identified. An open field test and light/dark transition test were used to evaluate the sedative and anxiolytic activities of this essential oil, respectively. P. guineense essential oil showed significant sedative activity at an effective dose of 4.0 10 5 mg per cage compared to the control group. It also showed potent anxiolytic effect at a dose of 4.0 10 6 mg per cage. The main compounds of P. guineense essential oil were linalool (41.8%) and 3,5-dimethoxytoluene (10.9%). These two main compounds were shown to play a major role in the sedative activity of P. guineense essential oil. These results suggest that inhalation of P. guineense essential oil might induce a mild tranquilizing effect.

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Antifungal activity of Piper guineense of Cameroon

Cited by 36 publications

References 5 publications

Effect of mixed cropping and plant extracts on the growth, yield and pest control of jute (Corchorus olitorius L.)

Effect of mixed cropping and plant extracts on the growth, yield and pest control of jute (Corchorus olitorius L.)

Antifungal Activity of <i>Chromolaena odorata </i>(L.) King & Robinson(Asteraceae) of Cameroon

Inhalation of the Essential Oil of <i>Piper guineense</i> from Cameroon Shows Sedative and Anxiolytic-Like Effects in Mice

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