scholarly journals Removal of pesticide residues from fresh vegetables by the coupled free chlorine/ultrasound process

2022 ◽  
Vol 82 ◽  
pp. 105891
Author(s):  
Laxiang Yang ◽  
Jieqiong Zhou ◽  
Yuxin Feng
Keyword(s):  
Pesticide Residues ◽  
Free Chlorine ◽  
Fresh Vegetables

scholarly journals Pesticide Residues and Health Risk Assessment in Tomatoes and Lettuces from Farms of Metropolitan Region Chile

Molecules ◽  
2020 ◽  
Vol 25 (2) ◽  
pp. 355
Author(s):  
Sebastian Elgueta ◽  
Marcela Valenzuela ◽  
Marcela Fuentes ◽  
Pablo Meza ◽  
Juan Pablo Manzur ◽  
...  
Keyword(s):  
Pesticide Residues ◽  
Hazard Index ◽  
Metropolitan Region ◽  
World Health ◽  
Effective Control ◽  
Pesticides Residues ◽  
Fresh Vegetables ◽  
Surveillance Programs ◽  
Health Organization ◽  
Chilean Population

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.

Detection of pesticide residues in vegetables sold in Changchun City，China

2020 ◽  
Author(s):  
Mengmeng Jiang ◽  
Haicheng Gao ◽  
Xinxin Liu ◽  
Yu Wang ◽  
Jiaqi Lan ◽  
...  
Keyword(s):  
Pesticide Residues ◽  
Detection Rate ◽  
Organophosphorus Pesticides ◽  
Pollution Level ◽  
Potential Health ◽  
Chemical Structures ◽  
Compound Pollution ◽  
Fresh Vegetables ◽  
Relative Standard ◽  
Pyrethroid Pesticides

In this essay we investigate mainly 18 pesticide residues with different chemical structures in fresh vegetables, including organochlorine pesticides, organophosphorus pesticides, carbamate pesticides and pyrethroid pesticides. At the same time, it is estimated that the potential health risks for residents. A total of 313 samples were collected from 12 kinds of vegetables from Changchun, the capital of Jilin Province,China. 18 pesticide residues in 313 samples were analyzed by Gas chromatography and mass spectrometry (GC-MS) . Testing linearity was favorable in the range of 0.01 - 1.00μg/mL, R 2 ≥0.99, and the recovery rate of pesticides was 62% - 110%, the relative standard deviation < 5%, the detection limit of the pesticide is 0.0001 - 0.0167 mg / kg, the limit of quantification is 0.0002 - 0.0556 mg / kg. Overall, the detection rate of pesticides was 28.43%, and the detection rate and over-standard rate of celery were the highest, while the pesticide detection rate of potatoes was the lowest, and the pesticide exceeding rate of cucumber was the lowest. Three pesticides tested were not detected in the 18 pesticides including heptachlor, chlorpyrifos and permethrin. Among the 15 pesticides detected, the maximum risk factor of 7 pesticides is greater than 1 such as carbofuran, omethoate, phorate, dicofol, dimethoate, chlorpyrifos and dichlorvos, which may cause potential harm to human health. In contrast others will be safe. It could not have significant perniciousness for people from the perspective of single pollution level,, but it is not ignored there are multiple pesticide residue compound pollution to endanger persons' health.

Pesticide residues in fresh vegetables imported into the United Arab Emirates

Food Control ◽  
2021 ◽  
pp. 108663
Author(s):  
Tareq.A. Osaili ◽  
Maryam.S. Al Sallagi ◽  
Dinesh.K. Dhanasekaran ◽  
Wael.A.M. Bani Odeh ◽  
Hajer.J. Al Ali ◽  
...  
Keyword(s):  
United Arab Emirates ◽  
Pesticide Residues ◽  
Fresh Vegetables

scholarly journals Multiresidue Analysis of 86 Pesticides Using Gas Chromatography Mass Spectrometry: II-Nonleafy Vegetables

2013 ◽  
Vol 2013 ◽  
pp. 1-10 ◽  
Author(s):  
M. H. EL-Saeid ◽  
M. T. Selim
Keyword(s):  
Gas Chromatography ◽  
Pesticide Residues ◽  
Crop Protection ◽  
Monitoring Program ◽  
Gas Chromatography Mass Spectrometry ◽  
Hot Pepper ◽  
Multiresidue Analysis ◽  
Mass Selective Detector ◽  
Sample Extract ◽  
Fresh Vegetables

A total of 1057 samples of fresh vegetables from import and domestic production were analyzed (cold pepper, egg plant, carrot, cucumber, potato, hot pepper, cultivation tomato, squash, beans, okra, onions, cauliflower, and green house tomato). The aim of this study was to investigate pesticide residues in market foods in Riyadh, which have been collected from Riyadh Development Company (Al-Tamer Vegetables Market). Pesticide residues were determined by gas chromatography with mass selective detector (GC-MSD). A multiresidue method was developed and described for simultaneous determination of 86 pesticides commonly used in crop protection. This method used to determine 86 pesticide residues with a broad range of physicochemical properties in fresh vegetables related to organophosphorus (OPP), organochlorines (OCP), pyrethroids, and carbamates mainly used in agriculture. Sample extract was cleaned up by using AOAC method. Pesticide residues above the maximum residue limits (MRL) were detected in 15.89% of the total samples (168 from 1057 samples), but 83.90% of the total samples (887 from 1057 samples) has no residues or contained pesticide residues at or below MRL. The detected and most frequently found pesticide residues were permethrin (45 times) and endosulfan (34 times) followed by deltamethrin (27 times). The findings of this study pointed to the following recommendations: the need for a monitoring program for pesticide residues in imported food crops.

scholarly journals Quantification of Pesticide Residues in Fresh Vegetables Available in Local Markets for Human Consumption and the Associated Health Risks

Agronomy ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 1804
Author(s):  
Umme Salma Nisha ◽  
Md. Sirajul Islam Khan ◽  
Mohammad Dalower Hossain Prodhan ◽  
Islam Md Meftaul ◽  
Noorjahan Begum ◽  
...  
Keyword(s):  
Food Safety ◽  
Health Risk ◽  
Health Risks ◽  
Pesticide Residues ◽  
Hazard Quotient ◽  
Human Consumption ◽  
The European Union ◽  
Lablab Purpureus ◽  
Potential Threat ◽  
Fresh Vegetables

Human health risks as a result of consuming pesticide residues in fresh vegetables have drawn serious attention to the scientific community, particularly in developing countries. This study analyzed country bean (Lablab purpureus L.) and eggplant (Solanum melongena L.) for widely used neonicotinoid, synthetic pyrethroid, and dithiocarbamate pesticide residues in order to ensure food safety. The analyzed vegetables contained residues of acetamiprid and cypermethrin in 17% of bean and 13% of eggplant samples, respectively; among them, 3% of bean and 1% of eggplant samples had residues of acetamiprid that were above the maximum residue limits set by the European Union (EU-MRLs). None of the samples for either of the analyzed vegetables contained the residue of thiram and lambda-cyhalothrin. In contrast, 83% of bean and 87% of eggplant samples had no detectable pesticides. Thus, the findings were surprising considering the repeated and overuse of pesticides in vegetables in the investigated areas. However, this outcome supports the general claim of pesticide adulteration in terms of the active ingredients, which is another drawback to ensuring food safety. The non-cancer health risk assessment based on the acute health risk to consumer (aHI) and chronic hazard quotient (HQ) indicates that contaminated vegetables might pose a potential threat to children’s health and alarming for adults. This study reflects the overall scenario of pesticide residues in marketed vegetables of Barishal district of Bangladesh, which could help the consumers to bring awareness, and to take necessary actions by the pesticide suppliers and policymakers.

scholarly journals A study on equipment and experimental process of fresh vegetables handling practices

2017 ◽  
Vol 20 (K6) ◽  
pp. 87-94
Author(s):  
Son Anh Tran ◽  
Ky Quang Dang
Keyword(s):  
Food Safety ◽  
Pesticide Residues ◽  
Leafy Vegetable ◽  
Safety Standards ◽  
Effective Combination ◽  
Fresh Vegetables ◽  
Experimental Process ◽  
Handling Practices ◽  
Food Safety Standards

The problem of pesticide residues in vegetables, especially leafy vegetable is the big concern to both customers and exporters. These days, plants, where people use postharvest technologies, are located in Cu Chi, Hoc Mon và Binh Chanh. Due to their simple and obsolete features, those technologies are in need of significant investment with a view to serving manufacture and accommodating customers' demand. This research aims at proposing a fresh vegetables handling process based on elements affecting the process by ultrasonic, micro bubbles and Ozone. The result of research is concentrated on studying, designing and implementing the equipment in line 200 kg/h productivity. It demonstrates an effective combination of cleaning and removing pesticide residues to the extent that is regulated by of Ministry of Health’s Food safety standards.

Evaluation of Two Extraction Procedures for Pesticide Residues Resulting from Foliar Application and Root Absorption

1971 ◽  
Vol 54 (1) ◽  
pp. 142-146 ◽  
Author(s):  
Jerry A Burke ◽  
Mildred L Porter ◽  
Susan J V Young
Keyword(s):  
Organochlorine Pesticide ◽  
Pesticide Residues ◽  
Foliar Application ◽  
Extraction Procedure ◽  
Frozen Storage ◽  
Organophosphorus Pesticide ◽  
Root Absorption ◽  
Fresh Vegetables ◽  
Organochlorine Pesticide Residues ◽  
Exhaustive Extraction

Abstract The acetonitrile extraction procedure of Mills et al. and the 35% water-acetonitrile extraction procedure of Bertuzzi et al. were evaluated for the determination in fresh and dehydrated samples of 4 organochlorine pesticide residues resulting from foliar application or root absorption. Extraction of 2 organophosphorus pesticide residues from fresh samples was also studied. Extraction efficiencies were hased on the amount of pesticide residue removed by exhaustive Soxhlet extraction with chloroform-methanol (1 + 1). Residues resulting from foliar application of aldrin (dieldrin), diazinon, endosulfan (isomers I and II and endosulfan sulfate), methoxychlor, parathion, and TDE to green vegetables were determined after acetonitrile extraction; results ranged from 92 to 104% of the amounts determined after exhaustive extraction. Only one-half to two-thirds of dieldrin absorbed from the soil into potato tubers could be detected after acetonitrile extraction. Acetonitrile alone was not satisfactory for extracting dehydrated samples. When dehydrated samples containing residues resulting from foliar application were extracted with 35% water-acetonitrile, results were comparable to those by exhaustive extraction. However, the water-acetonitrile extraction was also ineffective for root-absorbed residues in the dehydrated samples. Analysis of samples after storage indicated that organochlorine pesticide residues on fresh vegetables undergo little or no change during frozen storage.

scholarly journals Analysis of Multi-Pesticide Residues and Dietary Risk Assessment in Fresh Tomatoes (Lycopersicum esculentum) from Local Supermarkets of the Metropolitan Region, Chile

Toxics ◽  
2021 ◽  
Vol 9 (10) ◽  
pp. 249
Author(s):  
Sebastian Elgueta ◽  
Marcela Valenzuela ◽  
Marcela Fuentes ◽  
Pilar Ulloa ◽  
Cecilia Ramos ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Pesticide Residues ◽  
Daily Intake ◽  
Metropolitan Region ◽  
Potential Health ◽  
Dietary Risk ◽  
Fresh Vegetables ◽  
Maximum Residue Levels ◽  
Residue Levels ◽  
Dietary Risk Assessment

In recent years, the official authorities in Chile have reported transgressions in the maximum residue levels of pesticides in fresh vegetables. There is no official information about traceability, pesticide levels, and potential health risks. The aim of this study was to analyse pesticide residues and their corresponding dietary risk assessments in tomatoes from supermarkets in the Metropolitan Region. Pesticides were extracted using the Quick, Easy, Cheap, Effective, Rugged and Safe, QuEChERS method, and their concentrations were determined by using chromatography with HPLC-FL/UV and GC-MS/ECD/NPD, following the Analytical Quality Control and Method Validation Procedures for Pesticides Residues Analysis in Food and Feed, SANTE guide and ISO 17025:2017 standard. In addition, a dietary risk assessment was carried out by comparing Chilean data to international references. The results reported that 9% of the samples had pesticide residue levels above the maximum residue levels permitted in Chile. All the scenarios evaluated revealed the highest estimated daily intake and hazard quotients for methamidophos and chlorpyrifos. Both the active substances used were acetylcholinesterase inhibitors and were neurotoxic under chronic risk assessment. The results showed the highest chronic hazard index in the Chilean scenario for all age groups and genders. The evidence obtained revealed that methamidophos, methomyl, and chlorpyrifos should be restricted for their use in Chilean agriculture.

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