scholarly journals Assessment of onions contamination by pesticides residues and characterization of market gardeners’ cultural practices in the region of Boucle du Mouhoun (Burkina Faso)

2021 ◽  
Vol 14 (9) ◽  
pp. 3097-3109
Author(s):  
Roger Dakuyo ◽  
Kiessoun Konate ◽  
Hemayoro Sama ◽  
Abdoudramane Sanou ◽  
Kabakdé Kabore ◽  
...  
Keyword(s):  
Burkina Faso ◽  
Health Risks ◽  
Pesticide Residues ◽  
Cultural Practices ◽  
Quechers Method ◽  
Pesticides Residues ◽  
Market Gardening ◽  
High Level ◽  
Active Substances

This study was initiated in order to study cultural practices and assess levels of contamination in pesticide residues of onion samples produced in the region of Boucle du Mouhoun, Burkina Faso. A collection of samples was carried out at three gardening sites. A survey was also carried out to list the various pesticides used on market gardening sites and the practices for using pesticides. The QuEChERS method allowed the quantification of pesticides. The results show that 93% of the market gardeners were men, and more than 67% were between 25 and 35 years old. Nearly 55% of market gardeners are illiterate and do not have adequate means of protection when applying pesticides. A total of 16 pesticides have been accounted and most of them are Category II which are dangerous for human health and environment. 12 pesticide residues were quantified. Most of the active substances detected above the MRL (set by Codex Alimentarius and EU) were from the organochlorine family. These results reveal a fairly high level of contamination for pesticide residues. The study revealed that cultivation practices in market gardening sites as well as the consumption of onion pose numerous health risks for humans and the environment.

scholarly journals FEATURES OF ORGANOCHLORINE PESTICIDES RESIDUES ACCUMULATION IN MELLIFEROUS PLANTS, BEE POLLEN AND HONEY

2020 ◽  
Vol 14 (1) ◽  
Author(s):  
N. Kasianchuk ◽  
O. Berhilevych ◽  
I. Negay ◽  
L. Dimitrijevich ◽  
T. Marenkova
Keyword(s):  
Organochlorine Pesticides ◽  
Pesticide Residues ◽  
National Level ◽  
Fruit Trees ◽  
Gas Liquid Chromatography ◽  
Chromatography Method ◽  
Bee Pollen ◽  
Pesticides Residues ◽  
Liquid Chromatography Method ◽  
High Level

Honey is natural product, which is produced by honeybees and due to contain of minerals, vitamins, simple sugars, organic acids, antioxidants and enzymes, it is considered as product with good nutritional and therapeutic properties. All beneficial characteristics of honey are reduced if it is contaminated with extraneous chemicals include pesticides. The purpose of this research was to study pesticides residues accumulation in the flowers of different types of melliferous plants, bee pollen and honey obtained from Odessa Region during 2015–2017 years. A total of 121 samples of flowers of melliferous plants and trees, 78 samples of bee pollen and 104 samples of honey were investigated with gas-liquid chromatography method. We found that all investigated samples were positive to such organochlorine pesticides as α, β, γ–isomers of hexachlorocyclohexane and dichlorodiphenyltrichloromethylmethane and its derivatives in different concentration. Our studies determined that high level of organochlorine pesticides was in samples of sunflower flowers whith average concentrations of α, β, γ–isomers of hexachlorocyclohexane 7.51±0.04 μg/kg, and DDT 6.98±0.02 μg/kg. Flowers of buckwheat and others field herbs (including as wild herbs as fodder crops) had even less concentration of these pesticides. Besides, the obtained results show that in the flowers of fruit trees (cherry, apple, pear, cherry, peach, cherry plum) had less concentration of studied pesticides in compere to forest trees (white acacia, linden). The results of bee pollen and honey samples examination have shown the same situation. The highest concentration of α, β, γ–isomers of hexachlorocyclohexane and dichlorodiphenyltrichloromethylmethane was in sample from sunflower origine with average consentration 3.52±0.05 and 3.77±0.03 μg/kg in bee pollen, 2.74±0.01 and 2.53±0.03μg/kg in honey respectively. However, the detected concentrations of pesticide residues in all samples were lower than the maxim admissibile limits, according to national and EU standards. Despite this, we suggest that regularly monitoring of pesticide residues in melliferous plants and apiculture products at national level need to grantee of quality and safety of honey and protection of consumers` health.

scholarly journals STUDY OF ORGANOCHLORINE PESTICIDE RESIDUES LEVEL IN FRESH AND DRIED TOMATOE FROM SELECTED FARMLANDS IN ZAMFARA STATE, NIGERIA

2020 ◽  
Vol 5 (8) ◽  
Author(s):  
Momoh Shaibu ◽  
M.A.T. Suleiman ◽  
R.A. lafia-Araga ◽  
S.O Salihu
Keyword(s):  
Organochlorine Pesticide ◽  
Pesticide Residues ◽  
Health Effect ◽  
Hazard Index ◽  
The Other ◽  
Drying Process ◽  
Pesticides Residues ◽  
Organochlorine Pesticide Residues ◽  
High Level ◽  
Fresh Tomato

In this study, organochlorine pesticide (OCP) residues level in fresh and dried tomato from selected farmland in Zamfara State, Nigeria were determined in fresh and sundried portion of the samples. QuEChERS and GC-MS were used for sample preparation and analysis respectively. The results obtained shows the presence of OCPs residues including; ? HCH, ? HCH, Endosulfan I&II, isodrin, DDM, deildrin, and mitotane with concentration of 3.669mg/kg, 0.0100mg/kg, 0.1714mg/kg, 0.129mg/kg, 0.0067mg/kg, 0.0054mg/kg, 0.2734mg/kg,. The ? HCH, endosulfan, isodrin and mitotane were above the maximum residual limit (MRL) in the fresh samples, below the MRL in dried samples, while endosulfan II, mitotane, and deildrine were below detection limit in dried tomato extracts. On the other hand ? HCH and mitotane has hazard index of 2.737 and 1.012 respectively. It is therefore, recommended to the regulatory institutions in Nigeria for effective awareness and educates the farmers on the health effect of pesticides residues in our food and environment. Also encourage drying process when a high level of pesticide residues are suspected in the tomatoes. Keynote: Organochlorine, Pesticide residues, Fresh Tomato, GC-MS.

Characterization of Biologically Active Substances from Calendula officinalis

2018 ◽  
Vol 18 (14) ◽  
pp. 1167-1174 ◽  
Author(s):  
Petra Lovecka ◽  
Jan Lipov ◽  
Kamila Thumova ◽  
Anna Macurkova
Keyword(s):  
Biologically Active Substances ◽  
Biologically Active ◽  
Calendula Officinalis ◽  
Active Substances

scholarly journals Diversity of Cowpea [Vigna unguiculata (L.) Walp] Landraces in Mozambique: New Opportunities for Crop Improvement and Future Breeding Programs

Agronomy ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 991
Author(s):  
Ana Maria Figueira Gomes ◽  
David Draper ◽  
Nascimento Nhantumbo ◽  
Rafael Massinga ◽  
José C. Ramalho ◽  
...  
Keyword(s):  
Vigna Unguiculata ◽  
Production Systems ◽  
Crop Improvement ◽  
Morphological Diversity ◽  
Ecological Zones ◽  
Nutrition Security ◽  
Food And Nutrition ◽  
High Level ◽  
Nutrition Sensitive

Cowpea (Vigna unguiculata) is a neglected crop native to Africa, with an outstanding potential to contribute to the major challenges in food and nutrition security, as well as in agricultural sustainability. Two major issues regarding cowpea research have been highlighted in recent years—the establishment of core collections and the characterization of landraces—as crucial to the implementation of environmentally resilient and nutrition-sensitive production systems. In this work, we have collected, mapped, and characterized the morphological attributes of 61 cowpea genotypes, from 10 landraces spanning across six agro-ecological zones and three provinces in Mozambique. Our results reveal that local landraces retain a high level of morphological diversity without a specific geographical pattern, suggesting the existence of gene flow. Nevertheless, accessions from one landrace, i.e., Maringué, seem to be the most promising in terms of yield and nutrition-related parameters, and could therefore be integrated into the ongoing conservation and breeding efforts in the region towards the production of elite varieties of cowpea.

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