scholarly journals Residual Content of Persistent Insecticides in the Fresh Nuts of Cola Acuminata Cohac from Kumbotso Local Government Area of Kano State and Implication for Public Health

2020 ◽  
Vol 36 (1) ◽  
pp. 64-70
Author(s):  
Z.D Alkali
Keyword(s):  
Public Health ◽  
Mass Spectrometry ◽  
Local Government ◽  
Pesticide Residues ◽  
Anhydrous Sodium Sulfate ◽  
Local Government Area ◽  
Mass Spectrometry Data ◽  
Open Market ◽  
Residual Content ◽  
Cola Acuminata

The pesticide residues in kola nut, Cola acuminata obtained from Mariri Market, Kumbotso Local Government Area, Kano state of Nigeria was investigated. The study consisted of a survey and laboratory analysis of kola nut samples. One hundred structured questionnaires were administered through an open market format in the major kola nut market in the state. In addition, 1kg sample of kola nut was collected randomly from ten major kola nut sellers in the market for analysis. A 100g sample of the kola nut was pounded into paste in a blender of which 50g was soaked in 150mL acetone for 24h. The extracted sample was filtered through anhydrous sodium sulfate while the extract was evaporated to near dryness using a rotary evaporator at 28oC in the Laboratory. Residue was redissolved in 2 mL acetone and kept in the refrigerator for GCMS Analysis. Ten pesticidal compounds were detected from a comparison of data with reference to mass spectrometry data (NIST05.LIB) and significant occurrence in kola nut sample which had a corresponding molecules affiliated to some pesticides standards were detected in the sample

scholarly journals Determination of Levels of Organochlorine, Organophosphorus, and Pyrethroid Pesticide Residues in Vegetables from Markets in Dar es Salaam by GC-MS

2017 ◽  
Vol 2017 ◽  
pp. 1-9 ◽  
Author(s):  
John A. M. Mahugija ◽  
Farhat A. Khamis ◽  
Esther H. J. Lugwisha
Keyword(s):  
Public Health ◽  
Mass Spectrometry ◽  
Pesticide Residues ◽  
Dar Es Salaam ◽  
Gas Chromatography Mass Spectrometry ◽  
Pyrethroid Pesticide ◽  
Maximum Residue Limits ◽  
Samples And Sampling ◽  
Dar Es Salaam City

This study investigated the levels of pesticides and metabolites in vegetables from major markets in Dar es Salaam city, Tanzania. Samples of fresh cabbage, spinach, and onions from the markets were analysed for pesticide residues. Extraction was performed using acetone followed by dichloromethane : cyclohexane mixture and the extracts were cleaned up using Florisil. The compounds were determined by gas chromatography-mass spectrometry (GC-MS). Pesticides and metabolites were detected in 72.2% of the samples. The detected pesticide residues and their highest mean concentrations were p,p′-DDT 4.00 × 10−3 mg/kg, p,p′-DDD 6.40 × 10−1 mg/kg, o,p′-DDD 1.00 × 10−2 mg/kg, α-endosulfan 6.00 × 10−1 mg/kg, β-endosulfan 2.10 × 10−1 mg/kg, chlorpyrifos 3.00 mg/kg, and cypermethrin 4.00 × 10−2 mg/kg. The most frequently detected compounds were p,p′-DDD and chlorpyrifos. The order of contamination was spinach > cabbage > onions. Generally, there were no significant variations in concentrations of pesticide residues among samples and sampling sites, which indicated similarities in contamination patterns. The concentrations of contaminants were above the maximum residue limits (MRLs) in 33.3–50% of the samples. The findings indicated risks and concerns for public health.

scholarly journals Prevalence of Soil Transmitted Helminthes (STHs)Among Pupils of Community Primary Schools in Nkpor and Mgbodohia, Obio/Akpor Local Government Area, Rivers State, Nigeria

2018 ◽  
Author(s):  
LeBari Barine Gboeloh ◽  
Ike-Ihunwo Chikaire Ndamzi
Keyword(s):  
Public Health ◽  
Local Government ◽  
Mixed Infection ◽  
Primary Schools ◽  
Local Government Area ◽  
Sub Saharan Africa ◽  
Health Concern ◽  
Public Health Concern ◽  
Significant Difference ◽  
Rivers State

ABSTRACTSoil transmitted helminthes (STHs) are common public health concern among children in Sub saharan Africa. A study to determine the prevalence and intensity of these parasites among pupils of two primary schools in Nkpor and Mgbodohia communities, Obio/Akpor Local Government Area, Rivers State, Nigeria was conducted. The formo-ether concentration technique was used to concentrate and separate the eggs and cysts from the faeces. Out of 107 pupils (56males and 51 females) investigated, 81 (75.7 %) were positive for at least one gastrointestinal helminth. The parasites identified included Ascaris lumbricoide(58.0%), Hookworms(28.4%), Trichirus trichiura(13.6%) and A.lumbricoide + T. trichiura (6.3%). Ascaris lumbricoide was significantly (P<0.05) higher in prevalence than other parasites. Although more females (54.3%) were infected than males (45.7%), there was no significance(P>0.05) difference in the prevalence in relation to sex. Of the 44 males infected, 24(54.5%), 5 (11.4%), 13(29.5%) and 2(4.5%) haboured A. lumbricoide, T. trichiura, Hookworms and mixed infection (A. lumbricoide + T. trichiura) repectively. Out of the 37 females infected, 21 (56.8%), 3(8.1%), 10(27.0%) and 3(8.1%) haboured A. lumbricoide, T. trichiura, Hookworms and mixed infection (A. lumbricoide + T. trichiura) repectively. There was no significance difference in the prevalence of A. lumbricoide and Hookworms between males (54.5%) and females (56.8%). There was significant difference in prevalence among two major age groups (5-10years-45% and 11-15years-41.9%). Children within the age group of 16-20years had the least infection (9.9%). The intensities of A.lumbricoide, T.trichiura and hookworm were 246.5, 107.5 and 187 Epg respectively. The intensity of A. lumbricoide was significantly difference than other parasites identified.Soil transmited helminthes remain a public health concern among children in the study area. Provision of portable water, toilet facilities, good education on the epidemiology of STHs and regular de-worming will enhance control measures.

scholarly journals The Burden of Multiple Intestinal Helminthes among Primary School Children in Doma, Doma Local Government Area, Nasarawa State, Nigeria

2019 ◽  
pp. 1-7
Author(s):  
I. A. Alaku ◽  
E. A. Omudu ◽  
N. G. Imainde ◽  
D. D. Attah
Keyword(s):  
Public Health ◽  
Local Government ◽  
Primary School ◽  
Ascaris Lumbricoides ◽  
Primary Schools ◽  
Intestinal Parasites ◽  
Parasitic Infection ◽  
Local Government Area ◽  
Health Concern ◽  
Intestinal Parasitic Infection

Intestinal parasitic infections have always been an important public health problem in the tropics particularly in developing countries such as Nigeria for example. A cross-sectional survey involving 440 schools going children of both sexes aged 6 - >12 years was conducted in 4 primary schools at a different location in Doma Local Government Area (LGA) of Nasarawa State, Nigeria, between September 2015 to February 2016 to determine the prevalence of intestinal parasites. Of the 440 samples examined 155 (35.22%) were infected with different intestinal parasites. The parasites observed included Entamoeba histolytica (6.59%), bookworm (5.22%), Ascaris lumbricoides (53.40%), Trichuris trichiuria (0.45%), E. coli (4.77%) and mixed infection of Ascaris lumbricoides and hookworm (7.27%) with Ascaris lumbricoides having the highest prevalence. Doma south primary school 38 (34.54) Islamiyya nursery/primary school and Doma west primary school had the lowest prevalence with 36 (32.72%) and 34 (30.90%) respectively. An overall prevalence of (35.22%) intestinal parasitic infection in school going children is moderately high and of public health concern. There is need to intensified integrated control measure to reduce or completely eradicate the intestinal parasitic infection in school pupils.

scholarly journals Detection of Toxoplasma gondii antibodies in trade donkeys (Equus asinus) at Ganawuri district market, Riyom Local Government area, Plateau State, North Central Nigeria

2019 ◽  
pp. 60-64
Author(s):  
Shalangwa Ishaku Bata ◽  
Shalom Kumra Byencit
Keyword(s):  
Public Health ◽  
Toxoplasma Gondii ◽  
Local Government ◽  
Cross Sectional Study ◽  
Latex Agglutination ◽  
Local Government Area ◽  
Serum Samples ◽  
Cross Sectional ◽  
North Central ◽  
Plateau State

Background and Aim: Toxoplasma gondii is a parasite of public health significance due to its possible transmission to humans through ingestion of tissue cysts in raw or undercooked meat or food or water contaminated with oocysts shed by felids and transplacental transmission. This study was carried out to provide information on the possible risk of transmission through eating undercooked donkey meat by conducting a market based cross-sectional study design to determine the presence of T. gondii antibodies in trade donkeys in Ganawuri district, Riyom Local Government Area, Plateau State, North Central, Nigeria. Materials and Methods: One hundred and thirteen serum samples were collected from trade donkeys at the market and analyzed for T. gondii antibodies using latex agglutination test (LAT). Serum samples with LAT titer >10 μl/ml were considered positive. Results: The distribution of the donkeys based on their sources showed that greater proportions (61.1%) were from North Eastern part of the country. The study showed that 31 of the serum samples collected and analyzed were positive for T. gondii antibodies given an overall prevalence of 27.4%. The prevalence ranges between 22.2 and 33.3% across the states where the donkeys were sourced. The study showed that seropositivity increases with age (p=0.003; OR=11.8) and ranges between 12.5 and 47.2%. The prevalence did not vary significantly based on sex and source/location (p=0.494, OR=0.05; 0.920, 1.45, respectively). Conclusion: This study showed that trade donkeys at Ganawuri district market have antibodies to T. gondii and suggest a public health risk from the consumption of undercooked donkey meat.

scholarly journals Qualitative detection of pesticide residues using mass spectral data based on convolutional neural network

2021 ◽  
Vol 3 (7) ◽  
Author(s):  
Jian Wei ◽  
Xuemei Wang ◽  
Zhenyu Wang ◽  
Jin Cao
Keyword(s):  
Neural Network ◽  
Mass Spectrometry ◽  
Convolutional Neural Network ◽  
Pesticide Residue ◽  
Pesticide Residues ◽  
Human Life ◽  
Channel Structure ◽  
Mass Spectrometry Data ◽  
Rapid Screening ◽  
Mixture Analysis

AbstractExcessive pesticide residues in crops directly threaten human life and health, so rapid screening and effective measurements of agricultural pesticides residues have important application significance in the field of food safety. It is imperative to detect different pesticide residue types in actual complex crop samples cause mixture analysis can provide more information than individual components. However, the accuracy of mixture analysis can be obviously affected by the impurities and noise disturbances. Purification and denoising will cost a lot of algorithm time. In this work, we used the problem transformation method to convert pesticide residues prediction into multi-label classification problem. In addition, a new convolutional neural network structure Pesticide Residues Neural Network (PRNet) was proposed to solve the problem of multi-label organophosphate pesticide residue prediction. The method of binary correlation and label energy set was used to adapt 35 pesticide residues labels. The Cross Entropy were used as loss functions for PRNet. The comprehensive comparison performances (e.g. 97% optimal accuracy rate) of PRNet is better than the other four models. By comparing the ROC curves of the five models, PRNet performs the best. The PRNet can separate the independent mass spectrometry data by different collision energy applied to phosphorus pesticide compounds through a three-channel structure. No complicated data preprocessing is required, the PRNet can extract the characteristics of different compounds more efficiently and presents high detecting accuracy and good model performance of multi-label mass spectrometry data classification. By inputting MS data of different instruments and adding more offset MS data, the model will be more transplantable and could lay the foundation for the wide application of PRNet model in rapid, on-site, accurate and broad-spectrum screening of pesticide residues in the future.

scholarly journals Species Composition of Sand-fly and Occurrence of Cutaneous Leishmaniasis in Owerri North Local Government Area, Imo State

2020 ◽  
pp. 1-5
Author(s):  
Ajero C M Ugoji ◽  
◽  
P N Amaechi A A ◽  
Chigbo U N ◽  
◽  
...  
Keyword(s):  
Public Health ◽  
Local Government ◽  
Species Composition ◽  
Cutaneous Leishmaniasis ◽  
Local Government Area ◽  
Laboratory Analysis ◽  
Sand Fly ◽  
Blood Samples ◽  
Imo State ◽  
Chi Square Analysis

Cutaneous leishmaniasis (CL) is a neglected tropical disease of public health value vectored by sand-fly in tropical and vegetative regions of the world. This study was carried out between March and September, 2019 to determine species composition of Sand fly and occurrence of cutaneous leishmaniasis in Owerri North Local Government Area of Imo State. Light and paper oil trap were used to trap 204 Sandflies from 3 villages and identified with standard entomological technique based on morphological characteristics. Assessment of the skin for cutaneous leishmaniasis manifestation was carried out on available respondents above 15 years. Blood samples were collected from 42 head of households and emptied into EDTA containers. Laboratory analysis of blood samples was carried out using standard method of staining and microscopy. Result was represented in percentages and subjected to chi-square analysis. The result revealed two sand-fly genera; Phlebotomus (135) and Lutzomyia (69) with abundant rates of 66.17% and 33.82% respectively. The different species were present in the villages sampled and female flies accounted for 45.59% of the collection. There was no typical CL skin manifestation observed among villagers, however, laboratory analysis of the household respondents showed 3(7.14) persons had amastigote form of leis hymenia in their blood. The study reveals occurrence of cutaneous leishmaniasis and its possible vectors in the study area. There is need for public health awareness, health education and application of effective control measures for sand-fly in this area

scholarly journals Prevalence of Geohelminths among Primary School Children in Edoh Community, Esit Eket Local Government Area, Akwa Ibom State, Nigeria

2020 ◽  
pp. 123-127
Author(s):  
M. N. Wogu ◽  
E. O. Onosakponome ◽  
U. A. Harry
Keyword(s):  
Public Health ◽  
Local Government ◽  
Primary School ◽  
School Children ◽  
Neglected Tropical Diseases ◽  
Study Participant ◽  
Local Government Area ◽  
Sub Saharan Africa ◽  
Primary School Children ◽  
Significant Public Health

Background: Geohelminths are responsible for some Neglected Tropical Diseases (NTDs) which have significant public health impacts in sub – Saharan Africa. Aim: To evaluate the prevalence of geohelminths among primary school children. Study Design: A cross – sectional randomized study. Place and Duration of Study: The study was carried out in Salvation Army Primary School, Esit Eket Local Government Area, Akwa Ibom State, Nigeria. The study was conducted from June to December, 2018 (six months). Materials and Methods: Stool samples were collected from each study participant, examined macroscopically (to detect the presence of blood, mucous, consistency and colour) and microscopically (to detect the presence of Geohelminths) using sedimentation concentration technique. Results: An overall Geohelminths prevalence of 58.0% was recorded in this study and only four species of Geohelminths were identified with varying prevalence; Ascarislumbricoides 35.7%, Hookworm 26.6%, Trichuristrichiura 4.2% and Strongyloidesstercoralis 2.8% (P =.05). Age groups 12–14 years and 3–5 years had the highest and least prevalence of 70.0% and 55.6% respectively while males and females had prevalence of 62.7% and 52.9% respectively. Conclusion: Geohelminths still have significant public health effects in Nigeria; prompt interventions such as accurate diagnosis, mass chemotherapy, periodic health education and improved living conditions will effectively reduce the menace of geohelminths.

scholarly journals Parasitic and Microbial Infestations of Fruits Sold at Otuoke, Ogbia Local Government Area, Bayelsa State, Nigeria

2021 ◽  
Vol 4 (2) ◽  
pp. 57-66
Author(s):  
Ezenwaka C.O. ◽  
Amuzie C.C.
Keyword(s):  
Public Health ◽  
Local Government ◽  
Ascaris Lumbricoides ◽  
Fruits And Vegetables ◽  
Fasciola Hepatica ◽  
Strongyloides Stercoralis ◽  
Psidium Guajava ◽  
Local Government Area ◽  
Ananas Comosus ◽  
Public Health Importance

Fruits and vegetables have numerous health importance but can act as vehicles in the transmission of foodborne diseases of public health importance. This research examined the presence of parasites and microbial organisms on fruits sold at Otuoke community, Ogbia Local Government Area, Bayelsa State, Nigeria using six fruits types, including pineapple (Ananas comosus), cucumber (Cucumis sativus), lime (Citrus aurantiifolia), garden egg (Solanum aethiopicum), guava (Psidium guajava) and orange (Citrus sinensis). The parasites were concentrated by sedimentation and were examined using a light microscope. The result of the study showed the presence of cysts of Cryptosporidium parvum, Entamoeba histolytica, eggs of Fasciola hepatica, Ascaris lumbricoides and larva of Strongyloides stercoralis. Five out of the 6 fruits types examined were infested with at least one type of parasites. Ascaris lumbricoides (33.33%) was the most frequently detected parasite and was found on the pineapple, guava and oranges fruits. Fruit types were not significantly associated with parasitic contamination (p > 0.005). Bacteria isolated from the fruits included Lactobacillus sp., Proteus mirabilis, Bacillus subtilis, Pseudomonas sp., Bacillus cereus, Salmonella typhi, Shigella sp., Escherichia coli and Staphylococcus aureus. E. coli was isolated in all the sampled fruits types. The total count was determined by pour plate method using MacConkey agar. Total viable bacteria count (TBC) ranged from 21.9 x 105cfu/ml to 7.27 x 105cfu/ml. Aspergillus niger, A. flavus, Mucor spp.. and Fusarium spp were the isolated fungi species. A high number of these microorganisms in fruits and vegetables can lead to public health emergencies. Risk reduction can be achieved through personal and food hygiene by the fruit sellers and consumers. Further studies should be conducted to address the effect of seasonal variation on the infestation of the fruits sold in this area.

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