Pesticide residues

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Tue, 12/31/2019 - 03:49
Chlorpyrifos (CPF) is a widely used pesticide effective against a large number of target pests, which is used by farmers to protect food crops. Based on earlier epidemiologic reports, which indicate that CPF might interfere with the progesterone signaling pathway and can affect conception, the present study was undertaken to evaluate the binding interaction of CPF with the human progesterone...
Sun, 12/29/2019 - 03:37
Author(s): Marinela Nutrizio, Jasenka Gajdoš Kljusurić, Marija Badanjak Sabolović, Danijela Bursać Kovačević, Filip Šupljika, Predrag Putnik, Mojca Semenčić Čakić, Igor Dubrović, Domagoj Vrsaljko, Nadica Maltar-Strmečki, Anet Režek JambrakAbstractStudy explored high voltage electrical discharge (HVED) for recovery of bioactive compounds from Dalmatian sage. HVED parameters were: treatment time (3...
Sun, 12/29/2019 - 03:32
Author(s): Xu Han, Feng Zhang, Lingling Meng, Yuedong Xu, Yingming Li, An Li, Mary E. Turyk, Ruiqiang Yang, Pu Wang, Jianqing Zhang, Qinghua Zhang, Guibin JiangAbstractOrganochlorine pesticides (OCPs) have been reported to be associated with an elevated risk of type 2 diabetes, although no study has focused on such associations in Chinese populations. In this case-control study, we aimed to...
Sat, 12/28/2019 - 03:31
Author(s): Eduardo Stringini Severo, Aline Teixeira Marins, Cristina Cerezer, Dennis Costa, Mauro Nunes, Osmar Damian Prestes, Renato Zanella, Vania Lucia LoroAbstractAquatic environments are affected by the use of pesticides in agricultural areas near rivers. To assess the impact of pesticide residues on affected environments Danio rerio (zebrafish) embryos have become an alternative model for...
Sat, 12/28/2019 - 03:31
Author(s): Tipsuda Subsanguan, Alisa S. Vangnai, Sumana Siripattanakul-RatpukdiAbstractProfenofos insecticide is one of the most broadly used organophosphorus pesticides causing the contamination of soil and groundwater. Since dissolved oxygen concentration in groundwater is limited, this study aimed to investigate profenofos biodegradation and detoxification under aerobic and anoxic conditions...
Thu, 12/26/2019 - 03:28
A stir bar sorptive extraction method coupled with deep eutectic solvent based solidification of floating organic droplets–dispersive liquid–liquid microextraction has been used for the simultaneous derivatization and extraction of some acidic pesticides in tomato samples. In this method, initially the analytes are adsorbed on a coated stir bar from tomato juice filled in a narrow tube. After...
Wed, 12/25/2019 - 03:31
Author(s): R. Pandiselvam, R. Kaavya, Yasendra Jayanath, Kornautchaya Veenuttranon, Piraya Lueprasitsakul, V. Divya, Anjineyulu Kothakota, S.V. RameshAbstractBackgroundConsumption of fruits and vegetables is an indispensable component of human dietary preference, however; it is unfortunate that the enormous pesticide residues remain in the plant produces. Pesticides used to control the pests and...
Tue, 12/24/2019 - 03:27
Considering the importance of developing a new analytical approach for pesticide residue detection for the sake of ensuring food safety, a beta‐cyclodextrin based molecularly imprinted polymers were prepared for selective determination of carbendazim. The polymers consist of a porous and hollow structure demonstrating the selective abundant adsorption sites for carbendazim molecule. The...
Tue, 12/24/2019 - 03:25
Increasing levels of pollution in Galveston Bay, TX, are of significant concern for populations that directly depend on fishing activities. Efforts to evaluate contaminant levels in commercial fish have been largely limited to the quantification of chemical mixtures in fish tissue, but little information exists about the toxicological potential of these chemicals on consumption of contaminated...
Tue, 12/24/2019 - 03:25
Biomarkers are applied as early warning indicators of organisms’ exposure to pollutants. The aim of this study was to utilise a multi-biomarker approach in the freshwater shrimp Caridina nilotica (Decapoda: Atyidae) as indicators of persistent pollutant exposure. A suite of biomarkers was selected to cover oxidative stress and damage, and energetics of the organisms. Five sites, representing an...
Sat, 12/21/2019 - 03:54
Pesticides are chemicals frequently used in agriculture to obtain maximum yield and improve product quality. Thousands of active ingredients and formulations of different pesticides are commercially available. Besides their advantages, a major disadvantage of pesticides is their residues, even though strict maximum residue limits have been set for each pesticide and permitted agricultural...
Sat, 12/21/2019 - 03:44
Mepanipyrim is a new-generation anilinopyrimidine pesticide that is employed nowadays to fight fungal diseases in a variety of crops. Rapid and user-friendly analytical methods that can complement the instrumental techniques are demanded. To analyse residues of this toxic compound in foodstuffs, monoclonal antibodies were generated for the first time, and an enzyme-linked immunosorbent assay was...
Fri, 12/20/2019 - 03:27
ABSTRACT BACKGROUND A new type of deep eutectic solvent based on three components using phosphate salts has been synthesized, characterized, and applied in the extraction of eight organothiophosphate pesticides from honey samples. In the present study, the deep eutectic solvent was prepared from phosphocholine choline chloride as a hydrogen bond acceptor and dichloroacetic acid and decanoic acid...
Fri, 12/20/2019 - 03:27
In this study, a preliminary food quality and safety assessment was performed on organic and cage-free egg samples marketed in the state of Rio de Janeiro, Brazil, that were analyzed concerning veterinary drug and pesticide residues using high performance and ultra performance liquid chromatography coupled to tandem mass spectrometry. The polyether ionophore salinomycin was detected in two...
Thu, 12/19/2019 - 03:36
Author(s): Garlapati Deviram, Thangavel Mathimani, Susaimanickam Anto, Tharifkhan Shan Ahamed, Devanesan Arul Ananth, Arivalagan PugazhendhiAbstractAlgae (especially microalgae and cyanobacteria) are potentially diverse, ubiquitous, and dominant group of photosynthetic organisms in nature. The dominance and diversity of algae are commonly observed in small puddles, streams, river, to oceans and...
Thu, 12/19/2019 - 03:28
Background In this study, the development of IR based‐prediction method for easy, fast and non‐destructive detection of pesticide residue levels measured by reference analysis in strawberry (Fragaria x ananassa Duch, Cv. Albion) samples using Near Infrared Spectroscopy (NIRS) and demonstrating its potential alternative or complementary use instead of traditional pesticide determination methods...
Wed, 12/18/2019 - 04:02
Author(s): Hassan Heidari, Samira Ghanbari-Rad, Esmaeil HabibiAbstractA deep eutectic solvent-based ultrasound-assisted liquid-liquid microextraction (DES-UALLME) followed by quantitative analysis using HPLC-UV has been developed for the determination of organophosphorus pesticides (phosalone and chlorpyrifos) in fruit juice samples (red grape juice and sour cherry juice). In DES-UALLME,...
Tue, 12/17/2019 - 03:26
In food analysis, a trend towards on-site testing of quality and safety parameters is emerging. So far, on-site testing has been mainly explored by miniaturized optical spectroscopy and ligand-binding assay approaches such as lateral flow immunoassays and biosensors. However, for the analysis of multiple parameters at regulatory levels, mass spectrometry (MS) is the method of choice in food...
Sat, 12/14/2019 - 03:34
Author(s): Xi Chen, Danhong Wang, Jie Li, Taotao Xu, Keqiang Lai, Qi Ding, Hetong Lin, Lin Sun, Mengshi LinAbstractThere have been increasing concerns among consumers about pesticide residues in Oolong tea. This study aimed to establish surface-enhanced Raman scattering (SERS) method for rapid measurement of chemical contaminants in Oolong tea. Synthesis of SERS substrate was achieved by...
Sat, 12/14/2019 - 03:29
Beauverolides (beauveriolides) are abundant biologically active cyclodepsipeptides produced by many entomopathogenic fungi, including those that are used as biopesticides. Beauverolides act as cholesterol acyltransferase inhibitors in humans; thus, their mode of action has been the subject of pharmacological and clinical research. The cost‐effective analytical methods are needed for fast, routine...
Sat, 12/14/2019 - 03:29
The AOAC 2007.1 Quick, Easy, Cheap, Effective, Rugged and Safe official method, together with gas chromatography coupled to a triple quadrupole mass spectrometer was applied for the analysis of 38 multiclass pesticides from dried fruits typically cultivated and exported from Colombia: uchuva (Physalis peruviana), lulo (Solanum quitoense), guanabana (Anona muricata) and pitahaya (Hylocereus...
Fri, 12/13/2019 - 03:28
In this work, a graphene oxide-based composite (DABP-GO) was prepared by aminating graphene oxide (GO) with the diazonium salt of 4,4′-diaminobiphenyl (DABP). The DABP-GO composite was characterized by scanning electron microscopy, infrared spectroscopy, and nitrogen adsorption-desorption. The DABP-GO showed to be an effective solid-phase extraction (SPE) adsorbent for carbamate pesticides. A SPE...
Thu, 12/12/2019 - 03:37
Author(s): Jing Zhao, Zhaorui Meng, Zexin Zhao, Longshan ZhaoAbstractA green and highly efficient ultrasound-assisted deep eutectic solvent extraction combined with functionalized magnetic multi-walled carbon nanotubes solid-phase extraction method for determination of seven pesticide residues in food products was developed. Various types of deep eutectic solvents (DESs) were screened for high...
Thu, 12/12/2019 - 03:29
Background Fungicides are often applied to pears before kept in storage facilities. Scientific application of pesticides can reduce unnecessary exposure, which in turn could benefit both humans and the environment. Results We investigated dissipation behavior, residue distribution and conducted risk assessments for prochloraz, pyraclostrobin, and tebuconazole in pears stored under different...
Thu, 12/12/2019 - 03:29
BACKGROUND A new growing interest solvent named deep eutectic solvent has been prepared and used as an extraction solvent in the dispersive liquid–liquid microextraction method. In order to prepare the solvent, dichloroacetic acid, L–menthol, and n–butanol at a molar ratio of 4: 1: 1 are mixed and after heating the deep eutectic solvent is formed. Then a dispersive liquid–liquid microextraction...
Thu, 12/12/2019 - 03:28
Solid-phase extraction (SPE) on activated carbon derived from coconut shell (CSAC) for the preconcentration of four varying polarity pesticides (imidacloprid, acetamiprid, simazine, and linuron) prior to their determination using high performance liquid chromatography with diode array detector (HPLC-DAD) was investigated. The characteristics of the CSAC were analyzed through X-ray diffraction (...
Sat, 12/07/2019 - 03:34
Author(s): Sutarnthip Ruengprapavut, Thanet Sophonnithiprasert, Napapan PongpoungphetAbstractThis research aimed to compare the efficiency of five washing solutions (0.9% NaCl, 0.1% NaHCO3, DI water, 0.001% KMnO4, and 0.1% acetic acid) for removing carbaryl residues from cucumber and chili. The vegetables were soaked in 10 mg/L of carbaryl solution for 30 min and then washed for 30 min in one of...
Sat, 12/07/2019 - 03:27
Polar Organic Chemical Integrative Samplers (POCIS) were deployed in two watersheds in Córdoba province and one watershed in Buenos Aires province in Argentina. The fungicides, tebuconazole, carbendazim and azoxystrobin, and the herbicides, atrazine, dicamba and 2,4-D were detected in POCIS deployed in each of the three watersheds. Estimated time weighted average concentrations of atrazine were...
Fri, 12/06/2019 - 03:27
Consumers’ demand is increasing for safe foods without impairing the phytochemical and sensory quality. In turn, it has increased research interest in the exploration of innovative food processing technologies. Cold plasma technology is getting popularity now days owing to its high efficacy in decontamination of microbes in fruit and fruit based products. As a on‐thermal approach, plasma...
Fri, 12/06/2019 - 03:27
BACKGROUND The consumption of pesticides‐contaminated sour cherry as fruit or juice has become a major health concern, and thus, intensified the search for alternative processing technologies such as pulsed electric fields (PEF), ozone (O), and ultrasonication (US). The novelties of this experimental study for sour cherry juice were four‐fold: (1) to quantify the removal efficiency of the new...
Thu, 12/05/2019 - 04:04
Author(s): Ingridd Ayslane Torres de Araújo Ribeiro, Rosimere da Silva, Alexandre Gomes da Silva, Paulo Milet-Pinheiro, Patrícia Maria Guedes Paiva, Daniela Maria do Amaral Ferraz Navarro, Márcia Vanusa da Silva, Thiago Henrique Napoleão, Maria Tereza dos Santos CorreiaAbstractThe control of insect pests (such as Sitophilus zeamais) depends mostly on the utilization of synthetic pesticides....
Mon, 12/02/2019 - 03:32
Author(s): Hiago de O. Gomes, Jorge Marcell C. Menezes, José Galberto M. da Costa, Henrique Douglas M. Coutinho, Raimundo Nonato P. Teixeira, Ronaldo F. do NascimentoAbstractIntroductionPesticides are organic compounds widely used in modern agriculture, being relevant for helping plantations and increasing food production. The banana, a fruit with oriental origin, stands out for being widely...
Sat, 11/30/2019 - 03:33
Author(s): Somenath Das, Vipin Kumar Singh, Abhishek Kumar Dwivedy, Anand Kumar Chaudhari, Neha Upadhyay, Akanksha Singh, Deepika, Nawal Kishore DubeyAbstractThe present study deals with encapsulation of Myristica fragrans essential oil (MFEO) into chitosan nano-matrix, their characterization and assessment of antimicrobial activity, aflatoxin inhibitory potential, safety profiling and in situ...
Fri, 11/29/2019 - 03:21
Being natural plant antimicrobials, saponins have potential for use as biopesticides. Nevertheless, their activity in plant–pathogen interaction is poorly understood. We performed a comparative study of saponins' antifungal activities on important crop pathogens based on their effective dose (EC50) values. Among those saponins tested, aescin showed itself to be the strongest antifungal agent. The...
Wed, 11/27/2019 - 03:27
Chlorpyrifos is a type of organophosphate insecticide used extensively in the plantation of tomatoes, a worldwide popular food. However, chlorpyrifos residues on tomatoes bring risks to human health considering the consumption level of tomato is relatively high across many countries. Accurate detection and strict regulation of chlorpyrifos residues are very important in controlling health risks...
Sat, 11/23/2019 - 03:30
The abuse of pesticides in home gardens may lead to contamination of home‐grown eggs. This study aimed to determine the prevalence of hexachlorocyclohexane (HCH), aldrin, and malathion pesticides residues in egg white and egg yolk of home‐grown eggs in Jordan; and the effect of refrigerated storage and heat treatment (boiling and frying) on residues level. High‐performance liquid chromatography...
Fri, 11/22/2019 - 03:32
Author(s): Wankui Jiang, Qinqin Gao, Lu Zhang, Hui Wang, Mingliang Zhang, Xiaoan Liu, Yidong Zhou, Zhijian Ke, Chenglong Wu, Jiguo Qiu, Qing HongAbstractA novel carbofuran-degrading strain CFD-1 was isolated and preliminarily identified as Sphingbium sp. This strain was able to utilize carbofuran as the sole carbon source for growth. The carbofuran hydrolase gene cehA was cloned from strain CFD-1...
Thu, 11/21/2019 - 03:25
The presence of ear rots in maize caused by Aspergillus flavus that are also associated with the production of aflatoxins has evolved into an increasing problem over the last few years. Since no commercial biological control products are still available to control A. flavus in maize in Europe, this study targets to the evaluation of six biopesticides/biostimulants (Botector®, Mycostop®, Serenade...
Wed, 11/20/2019 - 03:52
46% of raw and 14% of ready‐to‐eat vegetable samples from Arusha city were contaminated with pesticide residues from the groups of organophosphates pyrethroids and organochlorines. Washing of vegetables twice or more and changing the washing water after each use (p = .01) or peeling (p = .008) was significantly associated with a reduction of pesticide residues in them. There was a significant...
Sat, 11/16/2019 - 03:26
In this study, a simple and reliable sample preparation method based on an efficient version of homogeneous liquid-liquid extraction combined with dispersive liquid-liquid microextraction solidification of floating organic drop has been introduced to analyze some pesticide residues in fruit and fruit juice samples with gas chromatography-flame ionization detection. Under the optimum experimental...
Sat, 11/16/2019 - 03:26
Many pesticides are used for pest control during oat production and storage, making necessary to employ multiclass methods for pesticide residue determination. In this work, an efficient QuEChERS method was established for multiresidue determination of 60 pesticides in oats by liquid chromatography with tandem mass spectrometry (LC-MS/MS). Different sorbents, such as chitosan, Forisil®, C18, PSA...
Thu, 11/14/2019 - 03:27
Three types of molecularly imprinted solid phase microextraction fibers were fabricated through sol‐gel method using diazinon, parathion‐methyl and isocarbophos as templates, respectively, and assembled together to construct a multifiber for analysis of organophosphorus pesticides in complex matrices. The multifiber provided large extraction capacity and high imprinting factor up to 3.89. In...
Tue, 11/12/2019 - 03:32
Author(s): Julian R. Golec, Brianna Hoge, James F. WalgenbachAbstractTetranychus urticae Koch management in many specialty crops relies on intensive pesticide use and has led to rapid evolution of acaricide-resistant populations. These concerns, along with public concern regarding conventional pesticide safety, has generated interest in the use of biopesticides for managing T. urticae....
Mon, 11/11/2019 - 03:26
Organochlorine pesticides (OCPs) have been used for many decades, both for the control of pests in agriculture and for the control of vectors of human and animal diseases. Several recent studies have reported significant concentrations of these compounds in multiple environmental substrates due to their persistence, as well as the effect they have on ecosystem health, human health, and wildlife...
Mon, 11/11/2019 - 03:26
The dissipation behaviour and left-over residues of Hexaconazole fungicide and Lambda-Cyhalothrin pesticide in potato plant and soil were analysed by gas chromatography mass spectrometry (GC-MS). At fortified levels of 10, 100 and 500 μg/kg, the recoveries of Lambda-Cyhalothrin and Hexaconazole were in the range 81.66–93.25% and 76.11–93.92% with standard deviations of 0.87–8.13% and 0.88–7.68%,...
Sun, 11/10/2019 - 03:31
Author(s): Le Song, Zezhi Zhong, Yongtao Han, Qinglin Zheng, Yuhong Qin, Qian Wu, Xiaoping He, Canping PanAbstractTwelve commercial pesticide formulations containing sixteen active ingredients were applied on greenhouse strawberries at recommended and double doses. The dynamics and dietary risk analysis were investigated. A modified QuEChERS method based on the use of multi-walled carbon...
Sun, 11/10/2019 - 03:31
Author(s): Huatao Li, Pengfei Zhang, Yong Zhao, Hongfu ZhangAbstractPesticides have been extensively produced and used to help the agricultural production which leads to the contamination of the environment, soil, groundwater sources, and even foodstuffs. Fungicides carbendazim (CBZ) and chlorothalonil (Chl) are widely applied in agriculture and other aspects. CBZ or Chl have been reported to...
Thu, 11/07/2019 - 03:32
Author(s): Yuhang Hong, Hongmei Yin, Yi Huang, Qiang Huang, Xiaozhen YangAbstractIt is known that abamectin (ABM) inflicts oxidative damage on aquatic animals; however, knowledge about the immune response under pesticide-induced oxidative stress is incomplete. In the present study, several cellular and humoral immune parameters, including total haemocyte counts (THC), lysosomal membrane stability...
Thu, 11/07/2019 - 03:32
Author(s): Afaf.Abd El Megid, Mohammad E. Abd Al Fatah, Amel El Asely, Yakout El Senosi, Mahmoud M.A. Moustafa, Mahmoud A.O. DawoodAbstractThis study aimed to assess the levels of pyrethroids and organochlorine residues in the tissues of cultured Mugil capito and in water samples obtained from three different sites (Al-Hamol, Al-Riad and Sidi Salem; referred to as Area 1, Area 2, and Area 3,...

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