Pesticide residues

<< Return to all publications

Wed, 10/21/2020 - 14:06
The substitution of fish oil and fishmeal with plant-based ingredients in commercial aquafeeds for Atlantic salmon, may introduce novel contaminants that have not previously been associated with farmed fish. The organophosphate pesticide pirimiphos-methyl (PM) is one of the novel contaminants that is most prevalent in commercial salmon feed. In this study, the feed-to-fillet transfer of dietary...
Mon, 10/19/2020 - 22:16
Wheat scab, mainly caused by Fusarium graminearum, can decrease wheat yield and grain quality. Chemical pesticides are currently the main control method but have an inevitable negative consequence on the environment and in food safety. This research studies a promising substitute, Streptomyces pratensis S10, which was isolated from tomato leaf mold and shows a significant inhibition effect on F....
Sun, 10/18/2020 - 02:03
Soybean [Glycine max (L.) Merr.] has great economic and nutritional importance mainly due to its high protein content. All plant's N needs can be met by the symbiosis with elite Bradyrhizobium strains applied as inoculants to the seeds at sowing time; however, the increasing use of pesticides in seed treatments can impair the contribution of the biological nitrogen fixation. In this study, we...
Sat, 10/17/2020 - 06:28
Author(s): Xinyue Yuan, Dianwei Zhang, Xuecheng Zhu, Huilin Liu, Baoguo Sun Manganese-doped zinc sulfide quantum dots (Mn-ZnS QDs) are promising candidates for multi-channel sensing analysis due to their multi-dimensional optical properties. In this study, we integrated amino-silane and ionic liquid co-modified Mn-ZnS QDs and covalent organic frameworks (COFs) into optosensing nanoparticles to...
Sat, 10/17/2020 - 04:02
Carbendazim (CBZ), which is a fungicide widely used for the management of plant diseases, has been detected in a number of food products. The negative effects of CBZ to human health have stimulated the reduction of the maximum residue limits (MRLs), and subsequently the development of reliable and sensitive detection methods. Here, we are reviewing for the first time all reported chromatographic...
Fri, 10/16/2020 - 16:00
In this study, we report the presence of a microbial community of bioremediation potential in terms of relative abundance and taxonomic biodiversity in sediment samples of river Ganga and Yamuna, India at nine different sites. Metagenomic libraries were constructed using TruSeq Nano DNA Library Prep Kit and sequenced on NextSeq 500 by Illumina Next Generation Sequencing (NGS) technology....
Wed, 10/14/2020 - 08:03
This study introduces an applicable colorimetric sensor array for the detection of pesticides in the vapor phase. The array consisted of six metal nanoparticles spotted on the piece of filter paper. 3D-origami pattern was used for the fabrication of a paper-based sensor to decrease the effect of the nanoparticles leaching after exposure to analytes. Exposure to pesticide aerosols caused changes...
Wed, 10/14/2020 - 06:16
Author(s): Cristian Rojas, José F. Aranda, Elisa Pacheco Jaramillo, Irene Losilla, Piercosimo Tripaldi, Pablo R. Duchowicz, Eduardo A. Castro The present work describes the development of an in silico model to predict the retention time (tR) of a large Compound DataBase (CDB) of pesticides detected in fruits and vegetables. The model utilizes ultrahigh-performance liquid chromatography...
Wed, 10/14/2020 - 04:02
Pesticide residue analysis is critically important for ensuring food safety and regulating international trade. In a greenhouse setting, we assessed pesticide residue and exposure patterns using liquid chromatography–mass spectrometry and Allura Red tracer analysis. Our results show significant effects of eggplant canopy position and spray concentration on deposition parameters. Specifically,...
Tue, 10/13/2020 - 02:05
There is little knowledge of the microbial diversity, mycotoxins and associated secondary metabolites in GM maize and isogenic non-GM cultivars (cvs). This study has quantified the microbial populations and dominant fungal genera in 6 cvs of each type representative of herbicide, pesticide or stacked resistance to both. The predominant mycotoxins and targeted metabolomics profiles were also...
Sun, 10/11/2020 - 06:15
Author(s): Titiwan Changsan, Rodtichoti Wannapob, Morakot Kaewpet, Kittiya Shearman, Panwadee Wattanasin, Wing Cheung Mak, Proespichaya Kanatharana, Panote Thavarungkul, Chongdee Thammakhet-Buranachai Polypyrrole magnetic microspheres were synthesized and used to extract carbaryl, carbofuran, and methomyl before analysis by a high-performance liquid chromatography with diode array detection....
Fri, 10/09/2020 - 04:03
The fastest and most effective way to control pests is to use pesticides. However, with the accumulation of pesticide resistance and the difficulties of rapidly producing new pesticides, it is of great significance to create new pesticides through new synthetic methods. In this study, we report a computer-aided drug design (CADD)-assisted method to obtain two lead sulfonamides by homology...
Thu, 10/08/2020 - 06:27
Author(s): María Belén Medina, Martín Sebastián Munitz, Silvia Liliana Resnik This investigation shows the pesticide distribution and reduction using three common household cooking methods. Extraction was performed using QuEChERS and solid phase microextraction methodologies for rice and water, respectively. Gas chromatography-mass spectrometry was used. Both methods showed good linearity (r2...
Sat, 10/03/2020 - 22:13
BACKGROUD To extend the storage time of postharvest cherry tomato, boscalid are often used. Pesticide residue has become an issue of food safety. This study was to investigate the spatial distribution of boscalid residue in cherry tomato fruits and to determine the effect of 24‐epibrassinolide (EBR) in promoting boscalid degradation. RESULTS Boscalid could quickly penetrate into cherry tomatoes,...
Fri, 10/02/2020 - 06:16
Author(s): Mohsen Gavahian, Noelia Pallares, Fadila Al Khawli, Emilia Ferrer, Francisco J. Barba Agricultural products are a vital component of the human diet. However, these products can be contaminated by health-threatening pesticides and mycotoxins due to improper farming and storage practices. While these hazardous materials are stable during several traditional food processing, innovative...
Sun, 09/27/2020 - 06:18
Author(s): Guofu Qin, Yan Chen, Fengrui He, Bixia Yang, Keting Zou, Nemin Shen, Bei Zuo, Ruixiao Liu, Wei Zhang, Yongbo Li In this study, we investigated the contamination of 123 vegetables and 130 fruits with 11 fungicides in the mid-western region of China. The index of food safety (IFS) and risk coefficient (R) were used to assess the health hazards of the fungicides to consumers. The results...
Sat, 09/26/2020 - 02:06
Tea (Camellia sinensis (L.) O.Kuntze) is an industry-oriented economical crop in India. Among the sap sucking pests, tea mosquito bug (Helopeltis theivora) is one of the most serious pests causing heavy crop loss in tea plantation. Continuous use of chemical pesticides causes environmental pollution and health hazards besides developing pesticide residues in tea powder. The control of pests by...
Sat, 09/26/2020 - 02:04
Halogenated compounds are one of the largest groups of environmental-hazardous chemicals. The removal of the halogen atom from the substrate is possible by the catalytic activity of a type of enzyme called dehalogenase. Hydrolytic dehalogenases are suggested to be a good biodegradation catalyst for halogenated compounds with potential bioremediation applications. Therefore, the identification of...
Sat, 09/26/2020 - 02:03
River Erguna is the Sino-Russian boundary river which has been widely concerned both by Russia and China due to the water quality and water resources management. As one class of persistent organic pollutants, no enough attention is paid to investigate the behavior characteristics and risk of organochlorine pesticides (OCPs) in the rivers originated from forests and grasslands distributing in the...
Fri, 09/25/2020 - 08:02
by Dongxian Li, Yanyan Zhang, Qingqian Guo, Xiaoquan Sun, Hao Zhang, Shun Wang, Zephania Birech, Jiandong Hu In recent years, there has been growing concern among consumers about pesticide contamination in fruits. Therefore, rapid, reliable, and consistent detection methods for OPPs, especially dimethoate, are crucially needed. The existing quantitative methods for detecting dimethoate are not...
Thu, 09/17/2020 - 02:04
Pesticide and veterinary drug residues in food and environment pose a threat to human health, and a rapid, super-sensitive, accurate and cost-effective analysis technique is therefore highly required to overcome the disadvantages of conventional techniques based on mass spectrometry. Recently, the surface-enhanced Raman spectroscopy (SERS) technique emerges as a potential promising analytical...
Fri, 09/11/2020 - 04:02
To reduce the use of conventional chemical pesticides, naturally occurring biopesticides such as bacteriophages have emerged as a promising solution, but effectiveness of these biopesticides can be limited because of their UV and desiccation instability. This study developed a biopolymer formulation to improve the phage stability, enhance the antimicrobial activity of phages, and prevent...
Thu, 09/10/2020 - 22:23
Background and Aims Ozonated water has been used in vineyards to reduce the use of pesticides because of its presumed efficacy in the control of fungal diseases and the absence of residues. The aim of this study was to evaluate the effect of ozonated water treatments on the composition of grapes. Methods and Results Ozonated water was applied to grapevines of Vitis vinifera cv. Cabernet Sauvignon...
Wed, 09/09/2020 - 14:06
A QuEChERS multi-residue GC-MS/MS method was developed for determining 160 pesticides in fresh edible snails. The method was validated according to the EU guidance SANTE/12682/2019. Twenty-seven different pesticides were quantified in the 824 samples analysed. Of these, 22.09% contained pesticide residues; in one case six different pesticides. The most frequently quantified pesticides were...
Wed, 09/09/2020 - 04:02
For pesticide registration a post application assessment is made on the safety of any residue remaining in the edible portion of the treated crop. This assessment does not typically consider the bioaccessibility of pesticide residues. The effects of this on potential exposure to incurred difenoconazole residues passing through the human gastrointestinal tract were studied, including the impact of...
Wed, 09/09/2020 - 02:03
A dispersive liquid–liquid micro-extraction method was combined with high-performance liquid chromatography to rapidly and efficiently separate and detect organophosphorus pesticide residues in coarse cereals. In order to select the best conditions, the extraction conditions, including the type and volume of the extraction agent, the type and volume of the dispersant, extraction time, pH, and the...
Tue, 09/08/2020 - 02:03
Chemical agricultural inputs (e.g. pesticides and fertilizers) pollute the environment and undermine food safety. In fact, agriculture is in a direct relationship with the environment and farmers’ behaviours have extensive positive or negative impacts on it. Therefore, enhancing farmers’ behaviours to go towards organic farming methods represents a promising approach. The present study aimed to...
Sun, 08/30/2020 - 06:13
Author(s): Herbert Musarurwa, Nikita Tawanda Tavengwa Deep eutectic solvents are versatile, green and new generation solvents that can be used during dispersive liquid-liquid micro-extraction techniques for pesticides. They have tunable physico-chemical properties that can be easily changed by varying the ratios of hydrogen bond donors and hydrogen bond acceptors in their structures. Deep...
Sat, 08/29/2020 - 02:04
Aquatic environments are constantly exposed to a cocktail of contaminants mainly due to human activities. As polluted ecosystems may simultaneously present other multiple natural stressors, the objective of the present study was to evaluate joint effect of stressors (natural and anthropogenic) on life history traits of the Neotropical cladoceran, Ceriodaphnia silvestrii. For this purpose, the...
Fri, 08/28/2020 - 16:00
Edible plant oil (EPO) is an indispensable nutritional resource for human health. Various cultivars of oil-bearing plants are grown worldwide, and the chemical compositions of different plant oils are diverse. The extremely complex components in oils lead to diverse standards for evaluating the quality and safety of different EPOs. The environment poses great challenges to the EPO safety and...
Wed, 08/26/2020 - 08:03
by Gamal A. M. Abdu-Allah, Keon Mook Seong, Omprakash Mittapalli, James Adebayo Ojo, Weilin Sun, Omar Posos-Parra, David Mota-Sanchez, John M. Clark, Barry R. Pittendrigh Insects experience a diversity of subtoxic and/or toxic xenobiotics through exposure to pesticides and, in the case of herbivorous insects, through plant defensive compounds in their diets. Many insects are also concurrently...
Wed, 08/26/2020 - 02:03
In this study, organic compounds were screened in surface water collected from Xujiahe basin, China by gas chromatography-mass spectrometry (GC–MS). A total of 51 compounds were identified including 14 organochlorine pesticides (OCPs), 9 organophosphorus pesticides (OPs), 16 polycyclic aromatic hydrocarbons (PAHs) and 12 chlorobenzene (CBs). The concentrations of OCPs, PAHs and CBs were generally...
Tue, 08/25/2020 - 16:00
Pesticide-resistant plant pathogens are an increasing threat to the global food supply and have generated a need for novel, efficacious agrochemicals. The current regulatory process for approving new agrochemicals is a tedious but necessary process. One way to accelerate the safety evaluation process is to utilize in vitro systems to demonstrate pesticide degradation by soil microbes prior to ex...
Mon, 08/24/2020 - 20:48
A green, sensitive and accurate dispersive liquid–liquid microextraction (DLLME) method was used to preconcentrate four selected pesticides in dam lake water samples for determination by gas chromatography–mass spectrometry (GC–MS). Conditions of the DLLME method were comprehensively investigated and optimized according to type/volume of extraction solvent, type/volume of dispersive solvent, and...
Sat, 08/22/2020 - 06:26
Author(s): Amelie Crepet, The Minh Luong, Janis Baines, Polly E. Boon, Julie Ennis, Marc Kennedy, Isabelle Massarelli, David Miller, Steve Nako, Rainer Reuss, Hae Jung Yoon, Philippe Verger The Joint Food and Agriculture Organization of the United Nations (FAO)/World Health Organization (WHO) Meeting on Pesticide Residues (JMPR) is the scientific body assessing the risk of exposure to pesticide...
Thu, 08/20/2020 - 02:03
In this study, we present a novel atmospheric air plasma discharge for the generation of plasma-activated water (PAW), with the aim of reducing pesticide residues on fresh fruit. For this purpose, a large discharge volume pin-to-plate cold plasma reactor was employed. The pesticide-spiked grapes and strawberries were processed with varying PAW concentrations to study their efficacies for...
Tue, 08/18/2020 - 16:00
This review describes the researches performed in the last years to assess the impact of pesticide sub-lethal doses on soil microorganisms and non-target organisms in agricultural soil ecosystems. The overview was developed through the careful description and a critical analysis of three methodologies based on culture-independent approaches involving DNA extraction and sequencing (denaturing...
Tue, 08/18/2020 - 10:02
To adapt to changing and potentially hostile environments, bacteria can activate the transcription of genes under the control of alternative sigma factors, such as SigB, a master regulator of the general stress response in several Gram-positive species. Bacillus thuringiensis is a Gram-positive spore-forming invertebrate pathogen whose lifecycle includes a variety of environments, including...
Tue, 08/18/2020 - 04:02
A convenient and straightforward method, which is based on catechol dyes and tyrosinase, for colorimetric determination and discrimination of dithiocarbamate pesticides (DTCs) has been fabricated. Three catechol dyes, including pyrocatechol violet (PV), pyrogallol red (PR), and bromopyrogallol red (BPR), were chosen as both substrates and indicators in this method. Tyrosinase can facilitate...
Sun, 08/16/2020 - 06:14
Author(s): Alexander Kasperkiewicz, Janusz Pawliszyn Application of ambient mass spectrometry techniques to accelerate analysis of pesticides in produce, with technique validation via chromatographic separation, has not been explored extensively. In this work, coated blade spray (CBS) was used to provide freedom of instrumental choice for a multiresidue panel of pesticides in apple, blueberry,...
Sat, 08/15/2020 - 06:25
Author(s): Dasom Shin, Joohye Kim, Hui-Seung Kang In this work, we developed and optimized an analytical method for the simultaneous determination of multi-pesticide residues in fishery products using dispersive-solid phase extraction and liquid chromatography–tandem mass spectrometry (LC–MS/MS). We selected 66 pesticides (insecticide, fungicides, and herbicides) and determined their residue...
Sat, 08/15/2020 - 04:02
A strain of thiamethoxam-degrading endophyte, named TMX13, was isolated from roots of mulberry (Morus alba L.) and was identified as Enterobacter sp. Inoculating Chinese cabbage (Brassica chinensis L) with strain TMX13-gfp (gfp-labeled TMX13) could significantly reduce thiamethoxam residues in the aboveground part (edible portion) of the vegetable. The theoretical daily intake (TDI) of...
Thu, 08/13/2020 - 04:03
The low utilization rate of pesticides causes serious problems such as food safety and environmental pollution. Stimulus-responsive release can effectively improve the utilization rate of pesticides. Reactive oxygen species (ROS) burst, as an early event of plant–pathogen interaction, can stimulate the release of pesticides. In this work, a polymeric micelle with ROS-responsive was prepared and...
Wed, 08/12/2020 - 06:16
Author(s): Changjian Li, Yunfei Xie, Yahui Guo, Yuliang Cheng, Hang Yu, He Qian, Weirong Yao The removal of pesticide residues from fruits reduces the risk of pesticide exposure in humans. In this study, carbosulfan and trichlorfon residues removed from apple using ozone-microbubble treatment (OMBT), tap water, hypochlorous acid-water, ozone-water, and microbubble-water. The pesticide removal...
Wed, 08/12/2020 - 06:14
Author(s): Md Mehedi Hassan, Muhammad Zareef, Tianhui Jiao, Shuangshuang Liu, Yi Xu, Annavaram Viswadevarayalu, Huanhuan Li, Quansheng Chen Trace detection of toxic chemicals in foodstuffs is of great concern in recent years. Surface-enhanced Raman scattering (SERS) has drawn significant attention in the monitoring of food safety due to its high sensitivity. This study synthesized signal...
Tue, 08/11/2020 - 06:23
Author(s): Jun Wang, Hui-Ling Duan, Li Fan, Jing Zhang, Zhi-Qi Zhang In order to meet the requirements of pesticide residues’ detection in complex matrix samples, the magnetic fluorinated multi-wall carbon nanotubes (M-F-MWCNTs) were prepared and applied as new QuEChERS clean-up materials. Combined with GC-MS, an improved QuEChERS method was successfully developed for the detection of...
Tue, 08/11/2020 - 04:02
Plant diseases caused by viruses and fungi have posed a serious threat to global agricultural production. The discovery of new leads based on natural products is an important way to innovate pesticides. In this work, natural product luotonin A was found to have good antiviral activity against tobacco mosaic virus (TMV) for the first time. A series of luotonin A derivatives were designed,...
Sat, 08/08/2020 - 02:02
The aim of this study was to investigate, analyze, and compare applied techniques suitable for achieving efficient removal of organophosphorus pesticides (OPPs) (malathion and fenitrothion) from aqueous solutions and analyze the degradation products and processes. Pesticide degradation efficiency (%) was monitored by high-performance liquid chromatography (HPLC) equipped with a photodiode array...
Thu, 08/06/2020 - 06:24
Author(s): Shan Wang, Jiayi Wang, Chen Li, Yaping Xu, Zhaoxia Wu Since the beginning of the widespread use of pesticides, their removal from food has become a serious concern. In this study, the removal of residual pesticides (malathion and carbosulfan) from pak choi via treatment with ozonated water was investigated. Under the optimal treatment conditions, i.e., 2.0 mg/L ozonated water and a...
Tue, 07/28/2020 - 14:06
Agricultural commodities are generally consumed as processed food. Therefore, it is indispensable to assess pesticide residues in processed products rather than only in the raw agricultural commodity, in order to approach a more realistic scenario of dietary exposure. Processing factors are important tools for dietary exposure risk assessments. In this study, processing factors for the baking...

Pages