Evaluation 2021 Part I – Residues. Pesticides residues in food. Extra Joint FAO/WHO Meeting on Pesticide Residues

2021 ◽  
2020 ◽  
pp. 91-97
Author(s):  
AKE ASSI Yolande Epouse DATTE ◽  
GNONSORO Urbain Paul ◽  
KOUAKOU Konan Jean-Marie ◽  
KPAN KPAN Kouakou Gains ◽  
BIÉGO Godi Henri ◽  
...  

The determination of pesticides in food products is an essential issue to guarantee food safety and minimize health risks of consumers. In this study, 30 pineapple juice samples were collected randomly from 30 seller through the city of Abidjan (Côte d’Ivoire) and analyzed for the determination of pesticide residues. The aim of the work was to quantify 30 commonly used pesticides (Metolachlor, Chlorpropham, Parathion-methyl, Chlorfenvinphos, Vinclozolin, Parathion-ethyl, Fenuron, Aldicarb, Metoxuron, Monuron, Methabenzthiazuron, Chlortoluron, Monolinuron, Isoproturon, Diuron, Metobromuron, Metazachlor, Buturon, Linuron, Prometryn, Terbutryn, Desisopropylatrazine, Desethylatrazine, Simazine, Cyanazine, Atrazine, Propazine, Terbuthylazine, Metamitron, Crimidine and Metolachlor) in real samples of pineapple juice. The method used for the determination of these analytes in the complex matrices was high-performance liquid chromatography with UV/Visible detector. Results obtained indicate that 30% of the investigated pineapple juices samples are free of pesticides residues or have a level below Limit Of Detection......


Molecules ◽  
2020 ◽  
Vol 25 (2) ◽  
pp. 355
Author(s):  
Sebastian Elgueta ◽  
Marcela Valenzuela ◽  
Marcela Fuentes ◽  
Pablo Meza ◽  
Juan Pablo Manzur ◽  
...  

Over the last years, the detection of pesticide residues in the official food surveillance programs of Chile has been increased, mainly in fresh vegetables such as tomatoes and lettuces. The Metropolitana Region of Chile presents the highest detections in the country. The lack of evaluations of toxicological risks in human health have increased uncertainty of the potential effects of pesticides exposures in the Chilean population. This research aims to determinate health risks assessment of pesticide residues associated to tomatoes and lettuces produced in Metropolitana Region. The findings of this study reveal that tomatoes and lettuces cultivated in the MR show more than 50% of samples with one or multiple pesticides residues. From the total samples, 16% were over the Chilean Maximum Residue Levels (MRLs). The main pesticides detected in tomatoes and lettuces were methamidophos, methomyl, difenoconazole, cyprodinil and boscalid. The results obtained using the official data of the Ministry of Health of Chile (MINSAL) compared to the World Health Organization (WHO), describe relevant risks through the Estimated Daily Intakes (EDI), Hazard Quotients (HQ) and Hazard Index (HI) for the Chilean population due to high concentrations of methamidophos, methomyl and cyprodinil. More restrictions for the use of methamidophos, methomyl, difenoconazole, cyprodinil and boscalid and effective control programs should be implemented in order to mitigate the impacts on the Chilean population.


Author(s):  
Muhammad Nasimullah Qureshi ◽  
Inayat Ur Rahman

Flood in 2010 severely effected different areas of Khyber Pakhtunkhwa, Sindh, lower Punjab as well as some parts of Balochistan, Pakistan. After the flood, samples of drinking water were collected from the affected areas i.e. Akora Khattak and Buner, Khyber Pakhtunkhwa and pesticides residues were determined quantitatively in these samples employing GC-MS technique. Among the samples collected from Akora Khattak, chlorpyrifos was found in high amounts i.e. 0.040 ppm, in sample no. 6 while methamidophos and methiocarb were found in appreciable quantities i.e. 0.026 ppm and 0.038 ppm, respectively, in sample no. 4. Methamidophos and methiocarb were found in appreciable amounts i.e. 0.039 ppm and 0.034 ppm, respectively, in sample no. 17 among the samples obtained from Buner. Concentrations were found at the level below 0.01 ppm in most of the pesticides under study. From the results it appears that drinking water sources in the area under study have been contaminated with pesticides which is a health hazard and may be a source of various diseases in these areas. 


Agriculture ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 154 ◽  
Author(s):  
Grażyna Kowalska

In the presented study a total of 104 samples of herbal material (herbage of thyme, savory, sage, rock rose, marjoram, horsetail, oregano, basil; seeds of flax; roots of liquorice, valerian and lovage, flowers of coneflower and camomile and fruits of fennel and caraway) were analysed for the content of 250 pesticides. Residues of 16 pesticides were identified in 72.1% of the analysed herbal samples. In 11 of the analysed samples of thyme herbage and in one sample of basil herbage concentrations exceeding the maximum allowable levels were demonstrated. Residues of the identified substances were detected most frequently in samples of thyme (66.34%), compared to the other groups of analysed herbal material where the percentage share of samples containing the compounds sought was at the level of approximately 20%.


2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Jana Dwaidy ◽  
Dina Cheaib ◽  
Adla Jammoul ◽  
Nada El Darra

Purpose This study aims to evaluate the safety and quality of organic food product versus conventional ones in the Lebanese market. Design/methodology/approach Selected organic and conventional Lemon and cucumber were assessed for the presence of pesticides residues using LC-MS/MS and GC/MS/MS, also compared at the level of total polyphenols content, flavonoids, tannins and tested for their antiradical and antibacterial activities. Findings The findings indicate that organic lemons were contaminated by four types of pesticide residues (33.33%), while one pesticide residue (22.22%) was detected in conventional one, which were all below the European Union Maximum Residue Limits. For cucumber, six pesticide residues (66.66%) were detected in organic samples, while in conventional, eight pesticide residues (55.55%) were detected. However, absolutely four samples (44.44%) in each of conventional and organic cucumber samples surpass the maximum residue levels. Both lemon and cucumber, regardless of the farming systems, possess potent antioxidant activity with no significant difference, except for lemon, where total polyphenol was highly significant in conventional. Additionally, this study showed that lemon of conventional origin was slightly more effective in inhibiting the growth of gram-positive and gram-negative bacterial strains compared to organic samples, while both cucumber types did not exert any antibacterial effect. Originality/value This is the first paper to assess the polyphenols, pesticide residue and biological activities of organic lemon and cucumber in Lebanese market as well as comparing conventional to organic.


2011 ◽  
Vol 183-185 ◽  
pp. 1446-1450
Author(s):  
Yong Bo Lin ◽  
Xiao Xu

In this study, we researched the removal effect of pesticides residues in vegetables after igition of scallop shells, and measured the effect of the concentration of natural cleaning agent, the washing time and temperature on the removal efficiency. In addition, the best experimental conditions for removal was determined.By analyzing infrared spectrum,scanning electronic microscope energy spectrum, the composition of scallop shells and the elements differences between before and after igition, the results could be attained that the main component of scallop shells was CaCO3, which was about 98%, and that the main component was changed into CaO when burned at 900°CWhat’s more, the best washing temperature for natural cleaning agent was room temperature(25°C) with the washing time of 5min, and the best concentration was 5%. Further, natural cleaning agent could remove 70% of pesticide residues in vegetables which was relatively stable, and the effect of natural cleaning agent was better than that of salty water and distilled water.


2004 ◽  
Vol 52 (2) ◽  
pp. 141-151 ◽  
Author(s):  
Rosângela Gorni ◽  
Rolf Roland Weber

Thirty seven benthic samples of the inner shelf area of São Sebastião, Brazil, were collected between April 1994 and August 1998 and analysed for seventeen chlorinated pesticide residues and PCBs congeners. Pesticide residues and PCBs congeners levels were low (ng/g) and predominantly found in the crustacean samples. DDE was the most frequently residue with a maximum of 9,7 ng/g followed by HCHs with maximum of 17,1ng/g. As for the PCBs, the heavier congeners predominate: CB 138,153,170, 180 and 183. Maximum total PCBs was 17,4 ug/g in a crab sample. Higher levels of PCBs are related to feeding habits and local inputs of raw sewage or land runoff. Although EPA and FDA (U.S.A) below the guidelines for human consumption propose these levels, they do show that even in marine areas without intense agricultural or industrial activities these compounds are present at detectable levels.


2015 ◽  
Vol 8 (2) ◽  
pp. 178-190
Author(s):  
Mária Andraščíková ◽  
Svetlana Hrouzková

Abstract The current trend in sample preparation methods is devoted to minimizing or eliminating the volume of extractive solvent. In this review, the focus on solid phase microextraction (SPME) as a solvent free sample preparation method for the isolation of pesticides residues in different food matrices is given. To achieve satisfactory extraction efficiency, selection of the fiber coating is an important step in the method development. Here, recent trends in new supporting materials and new fiber coatings development are discussed. Finally, applicability of SPME for the pesticide residues analysis in various food matrices using mainly chromatographic methods is also reviewed.


Author(s):  
Muhammad Nasimullah Qureshi ◽  
Inayat-Ur-Rahman Rahman

Pesticides residues were determined quantitatively in drinking water samples collected fromdistrict Charsadda of the province Khyber Pakhtunkhwa, Pakistan employing GC-MS technique. Thesurvey was conducted soon after the flood in 2010. Aldicarb (0.003 mg/L) was found only in C7, whileresidues of acetachlor (0.001 mg/L) was found in C8. Among the pesticides quantified Chlorpyrifosdelivered highest amount of residues in C8, C9, C10, C11 and C12. Residues of o, p'-DDT were foundhigher in C1 to C6 than the permitted value (0.002 mg/L), while higher concentration of Pyridaben thanthe allowed value (0.0001 mg/L) was resulted in C1, C5, C6 and C14. Residues of Carbofuran, Atrazine,a-Endosulfan and Dieldrin, b-Endosulfan, Difenoconazole-1 and Difenoconazole-2 were not detectedin any of the collected water samples. Concentrations of rest of the pesticides residues detected in watersamples were within the permissible limits. The study revealed that water samples collected from districtCharsadda are highly contaminated with pesticides, which is a health risk factor for the inhabitant ofthis areas.


Sign in / Sign up

Export Citation Format

Share Document