Toxicity of powdered and ethanolic extracts of Uvaria chamae (Annonaceae) Bark on selected stored product insect pests

Negbenebor, H.E.; Makanjuola, W.A.; Denloye, Abiodun A.; Nura, S.

doi:10.5897/ajb2017.16257

Cited by 4 publications

(2 citation statements)

References 4 publications

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“…The gas chromatogram showed the relative concentrations of various compounds getting eluted as a function of retention time. The heights of the peak indicate the relative concentrations of the compounds of the components present in the plant extracts (Arjun et al, 2012;Negbenebor et al, 2018). Identification of the bioactive compounds was carried out by comparison of their mass spectra and retention time with those of reference standard and published data (Arjun et al, 2012).…”

Section: Discussionmentioning

confidence: 99%

GC-MS analysis and antibacterial susceptibility pattern of crude extracts of Gongronema latifolium and Allium sativum on selected multidrug-resistant clinical isolates

John¹,

Okpo²,

Edeghor³

et al. 2023

MJM

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Aims: This study was aimed at evaluating the phytochemical components and antibacterial activity of crude extracts of Allium sativum and Gongronema latifolium on multidrug-resistant isolates from clinical samples. Methodology and results: Collection of clinical samples [wounds (43) and throat ( 17)] and plant leaves, preparation of extracts, gas chromatography-mass spectrophotometer (GC-MS), isolation and characterization of bacterial isolates were all carried out using standard microbiological techniques. Antibiotic resistance studies were conducted using the Kirby-Bauer disc diffusion method. Antibacterial assay of plant extracts was evaluated using the agar well diffusion method. From the results obtained, Gram-negative bacteria isolated were found to be 73.7% while Gram-positive were 26.3%. The result also showed that Staphylococcus aureus had the highest occurrence rate of 12(21.1%), while Citrobacter sp. 2(3.5%) was the least occurring bacteria organism isolated from the clinical samples. The antibiotic susceptibility pattern evaluated showed at least one resistance in all the clinical bacterial isolates. The results showed that all the isolates were resistant to imipenem with the exception of Citrobacter sp. The results of GC-MS analysis of plant extracts identified fourteen and twelve bioactive compounds in the leaf extracts of G. latifolium and A. sativum, respectively. All extracts showed antibacterial activity with zones of inhibition ranging from 04 to 28 mm against the different resistant bacteria used. Ethanol extracts showed higher antibacterial activity as compared to aqueous extracts. Conclusion, significance and impact of study:The overall results of the present work provide baseline information for the possible use of these plants in treating bacterial infections involving MDR phenotypes. Thus, this study could serve as a foundation for exploring the potential of bioactive compounds of G. latifolium and A. sativum for the discovery of new antimicrobial drugs.

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Section: Discussionmentioning

confidence: 99%

GC-MS analysis and antibacterial susceptibility pattern of crude extracts of Gongronema latifolium and Allium sativum on selected multidrug-resistant clinical isolates

John¹,

Okpo²,

Edeghor³

et al. 2023

MJM

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“…The insecticidal effects of the powdered stem bark extract of Uvaria chamae and its ethanol extract was evaluated on three most devastating stored products pests (Coleopterous) in Nigeria, namely: Callosobruchus maculatus F. (Bruchidae), Rhizopertha dominica F. (Bostrichidae) and Sitophilus zeamais Motschulsky (Curculionidae). It was shown that U. chamae powdered and ethanol stem bark extracts have potentials for use during storage of grains, ensuring food security, profit maximization and availability of seeds for the next planting season without being damaged by these test insect species which may be the responsibility of the presence of high concentration of steroids and terpenes (Negbenebor et al, 2018).…”

Section: Insecticidal Activitymentioning

confidence: 99%

A review: secondary metabolites of Uvaria chamae p. Beauv. (Annonaceae) and their biological activities

Abu

Rex-Ogbuku

Idibiye

2018

International Journal of Agriculture Environment and Food Sciences

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The primary metabolites are of major importance to plants, while the secondary metabolites are of medicinal value to man (Trease and Evans, 1989) and these can equally be obtained from various anatomical structures of plants (Fahn, 1974). Man has benefited from the presence of these chemicals by exploiting the plant products as sources of sustenance in a variety of ways. For example, many drugs today are of plant origin. Pharmacological history is abounding with examples such as quinine, aspirin, picrotoxin, reserpine etc., while many of the synthetic drugs are fashioned after natural plant products (Sofowora, 1982). The Annonaceae is a large family of shrubby aromatic plants composed of 112 genera with about 2,150 species (Mabberly, 1997) and grows to about 3.6 m to 4.5 m tall. Uvaria chamae P. Beauv., commonly known as "finger root" is a climbing shrub and is found in the tropical wet and dry forests of west and central Africa along coastal scrubland. It is found alongside water in marsh forest with Alchornea cordifolia, Thalia (Maranthaceae), Dracaena arborea, Cyrtosperma, Anthocleista vogeliana, ferns, Mussa endaiserteana, Mitragyna stipulosa, Cyclosaurus (Arbonnier, 2004; Bongers et al., 2005). The fruit carpel's are in finger-like clusters, the shape giving rise to many vernacular names translated as "bush banana" or the like implying wildness where in Igala is called Ayiloko, Hausa: Kaskaifi, Yoruba: Okooja and Ghana: Akotompo. The fruits are yellow when ripe and have a sweet pulp which are edible and widely eaten (Iwu, 1993). Uvaria chamae is an important medicinal plant. The secondary metabolites isolated from the plant and their biological activities are reviewed. Chemical Constituents The search for the concerned active compounds has led to isolation of the several flavonoids, alkaloids, annonaceous acetogenins and essential oils from different plant parts of U. chamae. The preliminary phytochemicals detected from different parts of the plant are listed in Table 1 which shows the phytochemical groups present or absent in different plant parts. The bioactive compounds present in the essential oils and flavonoids isolated from the plant are listed in Table 2 and 3. Essential oils The essential oil from the root bark and leaves of U. chamae showed the presence of different constituents (Table 2). The oil from the root contained a number of oxygenated benzylbenzoate derivatives and ethers. The oil from the leaf contains predominantly sesquiterpene hydrocarbons, oxygenated sesquiterpenes, monoterpene hydrocarbons as well as oxygenated ones (Ayedoun et al., 1999). Thymoquinoldimethyl ether, benzyl benzoate, chamanen, omethoxybenzylbenzoate, o-methoxybenzyl benzyl ether, and di-o-methoxybenxyl ether are the major components of the root oil (Park and Sutherland, 1969; Lasswell and Hufford, 1977a) while the oil from the leaf was dominated by 1-nitro-2-phenylethane (63.2%), linalool (9.9%), and germacrene D (6.6%) (Moses et al., 2013) as shown in Table 2. The bioactivities of the major constituents account for t...

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Morphological variability of ‘bush banana’ (Uvaria chamae) and its environmental determinants in Benin, West Africa

Daï,

Salako,

Hotes

et al. 2024

Genet Resour Crop Evol

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Toxicity of powdered and ethanolic extracts of Uvaria chamae (Annonaceae) Bark on selected stored product insect pests

Cited by 4 publications

References 4 publications

GC-MS analysis and antibacterial susceptibility pattern of crude extracts of Gongronema latifolium and Allium sativum on selected multidrug-resistant clinical isolates

GC-MS analysis and antibacterial susceptibility pattern of crude extracts of Gongronema latifolium and Allium sativum on selected multidrug-resistant clinical isolates

A review: secondary metabolites of Uvaria chamae p. Beauv. (Annonaceae) and their biological activities

Morphological variability of ‘bush banana’ (Uvaria chamae) and its environmental determinants in Benin, West Africa

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