scholarly journals Investigation of the Presence of Some Heavy Metals in Four Edible Vegetables, Bitter Leaf (Vernonia amygdalina), Scent Leaf (Ocimum gratissimum), Water Leaf (Talinum triangulare) and Fluted Pumpkin (Telfairia occidentalis) from a Cottage Farm in Port Harcourt

2014 ◽  
Vol 6 (1) ◽  
pp. 18-24 ◽  
Author(s):  
I.A. Kalagbor ◽  
V. Barisere ◽  
G. Barivule ◽  
S. Barile ◽  
C. Bassey
Keyword(s):  
Heavy Metals ◽  
Vernonia Amygdalina ◽  
Ocimum Gratissimum ◽  
Fluted Pumpkin ◽  
Telfairia Occidentalis ◽  
Port Harcourt ◽  
Talinum Triangulare

scholarly journals PHYTOCHEMICAL SCREENING AND ANTIMICROBIAL ACTIVITIES OF VERNONIA AMYGDALINA (BITTER LEAF), TELFAIRIA OCCIDENTALIS (PUMPKIN LEAF) AND OCIMUM GRATISSIMUM (SCENT LEAF)

2020 ◽  
Vol 27 ◽  
pp. 55-61
Author(s):  
Habiba Maikudi MUHAMMED ◽  
Patience OJUKWU ◽  
Usman Ibrahim HAMZA ◽  
Ibrahim YAHAYA ◽  
Hauwa Hussaini NDAYAKO ◽  
...  
Keyword(s):  
Antimicrobial Activities ◽  
Phytochemical Screening ◽  
Vernonia Amygdalina ◽  
Ocimum Gratissimum ◽  
Telfairia Occidentalis

scholarly journals Investigations of Heavy Metals Concentrations in Leaves of Telfairia occidentalis Hook. F. (Fluted Pumpkin) in Nigeria

2015 ◽  
Vol 24 ◽  
pp. 1733-1742 ◽  
Author(s):  
Godwin Udo ◽  
Chukwuemeka Nwadinigwe ◽  
Alfreda Nwadinigwe
Keyword(s):  
Heavy Metals ◽  
Fluted Pumpkin ◽  
Telfairia Occidentalis

scholarly journals Assessment of Heavy Metal Contents, and Probable Health Risks of Some Staple Vegetables in Enugu Metropolis

2021 ◽  
pp. 1-14
Author(s):  
D. Ibegbu Madu ◽  
A. Eze Anthonius ◽  
Atuadu Vivian ◽  
C. Ejiofor Nonso ◽  
E. Ezeagu Ikechukwu
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Health Risks ◽  
Hazard Index ◽  
Potential Health ◽  
Amaranthus Hybridus ◽  
Ocimum Gratissimum ◽  
Telfairia Occidentalis ◽  
Metal Contents ◽  
Daily Intakes

Heavy metals naturally are non-biodegradable constituents of the earth’s crust that accumulate and persist indefinitely in the ecosystem as a result of both human and natural activities. Their contamination of vegetables remains an issue of public health interest due to the frequency, and quantity of consumption. The over exposure to these heavy metals continues to pose serious health threat globally. This study was aimed to assess the heavy metal contents of staple vegetables [Telfairia occidentalis, Amaranthus hybridus and Ocimum gratissimum] within Enugu metropolis; the leaves were screened for heavy metals [Arsenic As, Lead Pb, Cadmium Cd, Nickel Ni, Chromium Cr and Cobalt Co], by atomic absorption spectroscopy (AAS). Results (Mean±SD,  mgkg-1 ) showed that Amaranthus hybridus: contained [Pb-0.109±0.350, Cr -0.161±0.004]; Ocimum gratissimum: [Ni-0.179±0.028, Cd-0.033±0.006, Cr-0.176±0.036], and Telfairia occidentalis: [Pb-0.153±0.139, Co-0.198±0.148]; of which some values were slightly above WHO/FAO standards. Although, the estimated daily intakes (EDIs) were below referenced tolerable daily intakes (TDIs). The hazard quotients (HQs) were below 1 (HQ<1), but As and Cd, were exceptions; while the hazard index (HI) values were all above 1 (HI>1). The slightly above standard references of some of these heavy metals, and HI>1 values in this study are a concern, as potential health risks may arise amidst the population over a period of time, therefore, there is need to eliminate the likely sources of the latent contamination.

scholarly journals Assessment of Heavy Metals in Agricultural Soils and Plant (Vernonia amygdalina Delile) in Port Harcourt Metropolis, Nigeria

Agriculture ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 27
Author(s):  
William Azuka Iyama ◽  
Kingsley Okpara ◽  
Kuaanan Techato
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Agricultural Soils ◽  
Anthropogenic Activities ◽  
Pollution Load Index ◽  
Vernonia Amygdalina ◽  
Lifetime Cancer Risk ◽  
Port Harcourt ◽  
Metal Levels ◽  
Cr Concentration

This study assessed the concentration of heavy metal, such as lead (Pb), cadmium (Cd), Chromium (Cr), iron (Fe), Nickel (Ni), and Silver (Ag), in Vernonia amygdalina Delile and agricultural soils of three university farms located in Port Harcourt, Nigeria. The soils and plants were taken randomly to form composite samples and analyzed for heavy metals by the use of atomic absorption spectroscopy (AAS) and X-ray fluorescence (XRF). The study stations were agricultural soils and Vernonia amygdalina Delile from the Ignatius Ajuru University of Education (I), River State University (R) and University of Port Harcourt (U). The soil samples recorded mean concentration ranges for Fe as 19.71 ± 1.77 (I)–27.24 ± 3.56 mg/kg (R) in soils and 12.95 ± 1.68 (R)–18.18 ± 2.02 mg/kg (U) for the bitter leaf samples. The mean range for Pb concentration in the soil and bitter leaf were 4.35 ± 0.87–6.80 ± 0.86 mg/kg and 0.24 ± 0.64–2.19 ± 0.74 mg/kg, while Cd concentration in the soil and bitter leaf were 0.46 ± 0.28–1.42 ± 0.40 mg/kg and 0.17 ± 0.22–0.42 ± 0.08 mg/kg, respectively. The respective mean ranges for Cr concentration in the soil and bitter leaf were 5.91 ± 1.14–8.77 ± 0.88 mg/kg and 4.04 ± 0.64–5.92 ± 0.69 mg/kg, while Ni in soil and bitter leaf were 0.54 ± 3.38–10.26 ± 3.50 mg/kg and 0.042 ± 1.42–3.30 ± 0.88 mg/kg, while Ag was negligible. Heavy metal levels in soils and Vernonia amygdalina followed the order Fe > Cr > Pb > Ni > Cd and Fe > Cr > Ni > Pb > Cd, respectively, and were lower than WHO/FAO and EPA, except Cd, which was higher in soil and in Vernonia amygdalina. The ecological risk factor (ErF) was comparatively lower in soils than in the plant, while pollution load index (PLI) showed high heavy metal retention capacities in Vernonia amygdalina due to more anthropogenic influences. The metal transfer factor (TF) was highest in Fe, followed by Cr > Cd > Ni > Pb, while Pb had the highest chances of cancer risks from the incremental lifetime cancer risk (ILCR), especially in both soil and plant (mean ILCR, 2.07 × 10−2 and 2.45 × 10−3), while Cd had the least (mean ILCR, 9.64 × 10−5 and 3.36 × 10−5). Anthropogenic activities must be regulated and monitored by government relevant agencies to reduce heavy metal inputs into soils and avoid excessive accruals in food chain.

scholarly journals Diversité et Gestion des Légumes de Cueillette au Togo

2007 ◽  
Vol 7 (14) ◽  
pp. 02-21
Author(s):  
Batwila K ◽  
◽  
Apkavi S ◽  
Wala K ◽  
Kanda M ◽  
...  
Keyword(s):  
Vernonia Amygdalina ◽  
Adansonia Digitata ◽  
Afrique Subsaharienne ◽  
Ocimum Gratissimum ◽  
Vitex Doniana ◽  
Talinum Triangulare ◽  
Groupes Ethniques

En Afrique subsaharienne et particulièrement au Togo, les légumes de cueillette ont été longtemps négligés par la communauté scientifique et les agents de développement, bien qu’ils soient d’importants compléments alimentaires. La présente étude constitue un premier état des lieux sur l’utilisation des légumes de cueillette au Togo pour une valorisation de ces ressources. Pour ce faire, des enquêtes ethnobotaniques ont été menées chez 20 groupes ethniques dans 50 villages distribués sur toute l’étendue du territoire togolais. Les informations obtenues ont été complétées par des observations directes de terrain et l’ensemble des données obtenues ont été catégorisées suivant les ethnies, les zones agro-écologiques, les lieux et périodes de récolte, etc. Au total, 105 espèces dont un ou plusieurs organes sont utilisés comme légume ont été recensées. Elles ont été rangées dans 82 genres et 45 familles dont les Fabaceae, les Malvaceae, les Moraceae, les Asteraceae sont les plus nombreuses. Certaines espèces (Adansonia digitata, Fagara zanthoxyloides, Ocimum gratissimum, Talinum triangulare, Vernonia amygdalina et Vitex doniana) sont largement distribuées et utilisées par divers peuples tandis que d’autres sont spécifiques à des régions agro-écologiques données ou à des groupes ethniques donnés. La plus forte richesse d’espèces légumières a été notée au nord du pays chez les Nawdba et les Kabyè, suivis des Lamba, Moba, Tchokossi et Tamberma. Les organes consommés sont les feuilles (67%), les fruits (18%), les fleurs (6%) et les racines (6%). La période de récolte varie suivant les espèces : 33% des légumes recensés sont récoltés en saison sèche, 14% en saison des pluies et 53% en toute saison. La cueillette, la transformation, le conditionnement et la commercialisation sont des activités dévolues aux femmes. Cette étude a montré que divers organes de nombreuses plantes sont utilisés comme légumes de cueillette par les différentes communautés socio-ethniques du Togo. Elle Constitue une première étape d’un programme de valorisation effective des ressources végétales.

scholarly journals Heavy Metals, Proximate Analysis and Brine Shrimp Lethality of Vernonia amygdalina and Ocimum gratissimum Growing in Crude Oil-Rich Delta State, Nigeria

Foods ◽  
2021 ◽  
Vol 10 (12) ◽  
pp. 2913
Author(s):  
Oluwatofunmilayo Arike Diyaolu ◽  
Alfred F. Attah ◽  
Emmanuel T. Oluwabusola ◽  
Jones Olanrewaju Moody ◽  
Marcel Jaspars ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Crude Oil ◽  
Proximate Composition ◽  
Plant Biomass ◽  
Principal Component ◽  
Proximate Analysis ◽  
Oil Exploration ◽  
Vernonia Amygdalina ◽  
Ocimum Gratissimum ◽  
Significant Difference

Vernonia amygdalina (VA) and Ocimum gratissimum (OG) are among the most frequently consumed vegetables in Kokori and Abraka communities of Delta State, Nigeria. However, the continuous crude oil exploration and spillages in Kokori may threaten their safety for use as food and medicine. Twelve samples of VA and OG obtained from crude oil-rich and crude oil-free communities were comparatively analysed for proximate composition, heavy metals, and cytotoxicity. Data obtained were subjected to various multivariate statistical techniques, including principal component analysis (PCA), biplot, and analysis of variance (ANOVA), to investigate the correlations between the vegetables from the different communities and the effect of crude oil exploration and spill on plant biomass. Results obtained indicate a significant difference (p < 0.05) in the proximate composition of VA and OG and higher heavy metal content for VA from the crude oil-spill Kokori. Two VA collections from Kokori were exceptionally toxic to cellular crustaceans.

scholarly journals Thrips (Thysanoptera) of vegetable crops (okro, spinach, garden egg and pumpkin) grown in Southeastern Nigeria

2011 ◽  
Vol 39 (No. 4) ◽  
pp. 132-138 ◽  
Author(s):  
E.T. Oparaocha ◽  
R.N. Okigbo
Keyword(s):  
Lower Number ◽  
Frequency Of Occurrence ◽  
Vegetable Crops ◽  
Southeastern Nigeria ◽  
Amaranthus Hybridus ◽  
Solanum Incanum ◽  
Telfairia Occidentalis ◽  
Port Harcourt ◽  
Microscopic Studies ◽  
Hibiscus Esculentus

Eight vegetable crops were sampled at five localities in Southeastern Nigeria and were found to harbour one or more species of thrips. The crops were&nbsp;Amaranthus hybridus,&nbsp;A. spinosus,&nbsp;Basella rubra,&nbsp;Solanum incanum,&nbsp;S. melongena,&nbsp;Hibiscus esculentus,&nbsp;Telfairia occidentalis&nbsp;and a species of&nbsp;Solanum. The sampled localities, with the frequency of occurrence of thrips, were Umuahia (29.6%), Owerri (28.5%), Port Harcourt (25.7%), Calabar (18.7%) and Enugu (6.0%). The studies revealed that crops with very heavy infloresences, e.g.&nbsp;Amaranthus hybridus, had a higher number of thrips (40%) per flower/leaf, while simple flowered crops like&nbsp;Telfairia occidentalis&nbsp;could only harbour a far lower number of thrips per flower/leaf. This showed a preference of these thrips for plants with heavy inflorescences which provided them with more protection, especially their larvae. Taxonomic/microscopic studies identified three species of thrips:&nbsp;Haplothrips gowdeyi&nbsp;that attacked 63% of all the sampled crops,&nbsp;Frankliniella schultzei&nbsp;was hosted by 50% of the crops, and&nbsp;Megalurothrips ventralis also preyed on 50% of the plant samples. &nbsp;

Comparative Antioxidant Activities of Extracts of Vernonia amygdalina and Ocimum gratissimum Leaves

2013 ◽  
Vol 6 (1) ◽  
Author(s):  
Kelly Oriakhi ◽  
Ehigbai Igbuan Oikeh ◽  
Nkeiruka Ezeugwu ◽  
Ogechukwu Anoliefo ◽  
Omorede Aguebor ◽  
...  
Keyword(s):  
Antioxidant Activities ◽  
Vernonia Amygdalina ◽  
Ocimum Gratissimum
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