Pesticide residues

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Sat, 03/07/2020 - 03:25
Microbiological, physical, chemical, cytotoxic, and genotoxic analyses of waters from ten tubular wells intended for irrigation of a community garden complex in the state of Piaui, northeastern Brazil, were carried out in two periods of 2018 (rainy and drought). All wells in both periods were contaminated with total coliforms, and wells P1, P3, P5, and P10 also had fecal coliforms. The waters, in...
Thu, 03/05/2020 - 03:35
Author(s): S.T. Narenderan, S.N. Meyyanathan, B. Babu A wide variety of pesticides have been used in agriculture to increase the yield, quality and extend the storage life of crops. However, the use of pesticide has been increased now a day due to the ever-increasing population and rapid urbanization. The continuous uses of these pesticides have resulted in contamination of the environment, crops...
Wed, 03/04/2020 - 03:53
This paper describes the synthesis and application of a magnetic amino‐functionalized hollow silica‐titania microsphere as a new sorbent for magnetic dispersive micro‐solid phase extraction of selected pesticides in coffee bean samples. The sorbent was fully characterized by Fourier transforms infrared spectroscopy, field emission scanning electron microscopy, transition electron microscopy,...
Tue, 03/03/2020 - 03:26
Wetlands and their biodiversity are constantly threatened by contaminant pollution from urbanisation. Despite evidence suggesting that snakes are good bioindicators of environmental health, the bioaccumulation of contaminants in reptiles is poorly researched in Australia. We conducted the first broad-scale analysis of 17 metals and trace elements, 21 organochlorine pesticides, and 14 polycyclic...
Wed, 02/26/2020 - 03:36
ABSTRACT The Bacillus cereus group comprises numerous closely related species, including bioterrorism agent B. anthracis, foodborne pathogen B. cereus, and biopesticide B. thuringiensis. Differentiating organisms capable of causing illness or death from those used in industry is essential for risk assessment and outbreak preparedness. However, current species definitions facilitate species-...
Wed, 02/26/2020 - 03:28
Background A modified quick, easy, cheap, effective, rugged, and safe (QuEChERS) method was developed for the simultaneous determination of highly water‐soluble propamocarb and hydrophobic cymoxanil in potato tuber and tomato fruit. Residue behavior of the fungicides in open field or greenhouse were investigated for the safety evaluation of these two pesticides, and effect of the cultivation...
Sat, 02/22/2020 - 03:36
Author(s): Tingting Wang, Jaanus Liigand, Henrik Lauritz Frandsen, Jørn Smedsgaard, Anneli KruveAbstractLC/ESI/MS is the technique of choice for qualitative and quantitative food monitoring; however, analysis of a large number of compounds is challenged by the availability of standard substances. The impediment of detection of food contaminants has been overcome by the suspect and non-targeted...
Fri, 02/21/2020 - 04:20
by Ephantus J. Muturi, Gordon W. Selling, Kenneth M. Doll, William T. Hay, Jose L. Ramirez Synthetic pesticides are the cornerstone of vector-borne disease control, but alternatives are urgently needed to tackle the growing problem of insecticide resistance and concerns over environmental safety. Leptospermum scoparium J.R. Forst and G. Forst (manuka) essential oil and its four fractions were...
Thu, 02/20/2020 - 03:38
Author(s): Juan E. Ortúzar, Onay B. Dogan, Gustavo Sotomayor, Constanza Jiménez, Jennifer Clarke, Rolando A. Flores, George M. Gray, John H. Rupnow, Bing WangAbstractNational governments are moving to integrate risk analysis frameworks into food safety management systems at the country level. However, this process is less advanced in developing countries. In this context, the Chilean Livestock...
Tue, 02/18/2020 - 03:32
Author(s): Mohaddeseh Abouhosseini Tabari, Arash Rostami, Aref Khodashenas, Filippo Maggi, Riccardo Petrelli, Cristiano Giordani, Léon Azefack Tapondjou, Fabrizio Papa, Yanting Zuo, Kevin Cianfaglione, Mohammad Reza YoussefiAbstractIn this work, the essential oils (EOs) from Litchi chinensis, Clausena anisata, Heracleum sphondylium, Pimpinella anisum, Lippia alba, Crithmum maritimum and Syzygium...
Sat, 02/15/2020 - 03:28
The consumption of pesticide residues contaminated shiitakes resulted in important health issues in humans. This study evaluated the effects of classic household processing on six different pesticides used in shiitake culture, detailed in pesticide residue behavior and processing factors (PFs). Our results demonstrated that stir‐frying or frying reduced the residue levels of all six pesticides....
Sat, 02/15/2020 - 03:26
Pesticide loads and associated toxicity can be significantly reduced using integrated vegetated treatment systems, which remove moderately soluble and hydrophobic pesticides, but need a sorbent material to remove more soluble pesticides. Neonicotinoids such as imidacloprid are widely used insecticides, acutely toxic, and have been linked to a range of ecological effects. Laboratory experiments...
Thu, 02/13/2020 - 03:40
Cannabidiol (CBD) food supplements made of Cannabis sativa L. extracts have quickly become popular products due to their health-promoting effects. However, potential contaminants, such as mycotoxins and pesticides, can be coextracted during the manufacturing process and placed into the final product. Accordingly, a novel methodology using ultra-high-performance liquid chromatography coupled with...
Wed, 02/12/2020 - 03:26
Chlorpyrifos is a poisonous pesticide that is highly toxic to fish and aquatic organisms. However, there are fewer reports about how chlorpyrifos influences the redox balance of immune cells. Herein, the head kidney tissue treated with chlorpyrifos to do transcriptome analysis and TCR γ was screened out. Subsequently, we established TCR γ knockdown and overexpression carp head kidney lymphocyte...
Sat, 02/08/2020 - 03:37
by Changjiao Sun, Manli Yu, Zhanghua Zeng, Frédéric Francis, Haixin Cui, François Verheggen Abamectin is a common biocide used to control agricultural insect pests. However, the water insolubility of abamectin may result in extra organic solvent introduced in the environment. To solve this issue, it is desirable to develop nanoformulations to encapsulate abamectin with environment-friendly...
Sun, 02/02/2020 - 03:26
Use of pesticides continues to be indiscriminate, and birds are one of the worst affected non-targeted organisms. Information on the ill effects of pesticides on birds far from desired in India. Despite the presence of a wide variety and number of birds, there is exceedingly little data on organochlorine pesticide (OCP) residues in colonial nesting birds in sanctuaries of India. A total of 76...
Sat, 02/01/2020 - 04:00
Author(s): Hendrik Frentzel, Katharina Juraschek, Natalie Pauly, Ylanna Kelner-Burgos, Heidi Wichmann-SchauerAbstractMembers of the Bacillus cereus group are common contaminants of vegetables. One potential source of contamination is the application of B. thuringiensis based biopesticides. Although evidence of the presence of biopesticidal strains on food products is scarce, this information is...
Sat, 02/01/2020 - 03:57
LWT
Author(s): Farh M. Al-Nasir, Anwar G. Jiries, Ghaid J. Al-Rabadi, Muhammad Hussein Al-u'datt, Carole C. Tranchant, Saddam A. Al-Dalain, Nasr Alrabadi, Osama Y. Madanat, Rasha S. Al-DmourAbstractPesticide residues in citrus fruits (peeled grapefruit, lemon, orange and mandarin) and vegetables (cucumber, eggplant, tomato and zucchini) cultivated at three locations in the Jordan Valley were analysed...
Fri, 01/31/2020 - 03:33
Author(s): N.M. Valera-Tarifa, R. Santiago-Valverde, E. Hernández-Torres, J.L. Martínez-Vidal, A. Garrido-FrenichAbstractA reliable 16-min analytical method for the simultaneous determination of 250 pesticides in processed fruit using ultra-performance liquid chromatography, coupled to tandem mass spectrometry (UHPLC–MS/MS), was developed and validated according to SANTE 11813/2017 guidelines and...
Thu, 01/30/2020 - 03:28
Seaweed is a source of protein that can help overcome the anticipated challenges of a growing world population and the current challenges for finding alternatives for animal proteins in the Western diet. Thus far, data on the safety of seaweed for feed and food purposes in the Western world are scattered. This study aimed to review the available knowledge on the presence of food safety hazards in...
Wed, 01/29/2020 - 04:05
Author(s): S.M. Roknul Azam, Haile Ma, Baoguo Xu, Shoma Devi, Md Abu Bakar Siddique, Sarah L. Stanley, Bhesh Bhandari, Junsong ZhuAbstractBackgroundPesticide residues (PR) present in food are potentially toxic components to humans and can be the cause of severe health problems, depending on the means and amounts of individual exposure. Among the different routes of pesticide exposure, the most...
Wed, 01/29/2020 - 04:03
Author(s): Yi Xu, Felix Y.H. Kutsanedzie, Mehedi Hassan, Jiaji Zhu, Waqas Ahmad, Huanhuan Li, Quansheng ChenAbstractIn this study, a novel sensor fabricated with compactly arranged gold nanoparticles (AuNPs) templated from mesoporous silica film (MSF) via air-water interface has been confirmed as a promising surface-enhanced Raman scattering (SERS) substrate for detecting trace levels of 2,4-...
Wed, 01/29/2020 - 03:51
A new version of magnetic solid phase extraction performed in a narrow bore tube has been proposed for the extraction and preconcentration of different pesticides from various vegetable and fruit juices followed by gas chromatography. A few mg of C8@SiO2@Fe3O4 nanoparticles are added into an aqueous sample solution placed in a narrow bore tube. The sorbent particles move down through the tube...
Mon, 01/27/2020 - 03:34
Author(s): Merve Fırat Ayyıldız, Maral Selin Fındıkoğlu, Dotse Selali Chormey, Sezgin BakırdereAbstractThis study utilized reduced graphene oxide magnetic nanoparticles Fe3O4/rGO-MNP to preconcentrate two alkyl phenols, two organochlorine pesticides and one organophosphate pesticide from water and baby food samples for the determination by gas chromatography flame ionization detector (GC-FID)....
Sat, 01/25/2020 - 03:30
Author(s): M.G. Hinojosa, A.I. Prieto, D. Gutiérrez-Praena, F.J. Moreno, A.M. Cameán, A. JosAbstractCylindrospermopsin (CYN) is a cyanotoxicant which occurrence is increasing due to climate change. Cylindrospermopsin is able to exert damage in the organism at several levels, among them, in the nervous system. Moreover, it is important to take into account that it is not usually present isolated...
Sat, 01/25/2020 - 03:27
A rapid and effective method was developed for the analysis of 39 pesticide residues in porcine meat with dual‐layer multi‐plug filtration cleanup and gas chromatography‐tandem mass spectrometry detection. The cleanup process was performed with columns packed with two layers, namely multi‐walled carbon nanotubes, C18 and anhydrous magnesium sulfate (MgSO4) as top layer, while mixture of florisil...
Sat, 01/25/2020 - 03:25
BACKGROUND Pesticides are extensively used worldwide to control plant pathogens and prevent agricultural product damage. However, they can pollute the environment and endanger human health. So far, a variety of sample preparation methods have been developed for pesticide residues analysis. RESULTS A hyphenated solid‐liquid microextraction method based on a new magnetic graphene oxide...
Sat, 01/25/2020 - 03:25
In this study, 41 tomato samples were investigated by means of stable isotope ratios (δ13C, δ18O and δ2H), elemental content, phenolic compounds and pesticides in order to classify them, according to growing conditions and geographical origin. Using investigated parameters, stepwise linear discriminant analysis was applied and the differences that occurred between tomato samples grown in...
Fri, 01/24/2020 - 03:31
Author(s): Xi Chen, Hetong Lin, Taotao Xu, Keqiang Lai, Xue Han, Mengshi LinAbstractCellulose nanofibers (CNF) coated with inorganic nanoparticles are novel hybrid nanocomposites that have great potential in various areas including agriculture and food science. The objectives of this study were to synthesize nanocomposites consisted of CNF coated with silver nanoparticles (AgNPs), which can be...
Fri, 01/24/2020 - 03:25
Three sample preparation procedures were compared for a multi-residue analysis of pesticides in hops: (a) modified Hengel’s method based on extraction with acetonitrile in combination with clean-up on a C18 SPE column, (b) miniaturized Biendl’s method based on acetone extraction and PSA SPE sample clean-up, and (c) modified Quick, Easy, Cheap, Effective, Rugged, and Safe (QuEChERS) method which...
Thu, 01/23/2020 - 03:27
Surface‐enhanced Raman spectroscopy (SERS) provides a potential solution for rapid analysis of trace compounds such as residual pesticides, naturally occurred toxicants, banned or restricted drugs, and food additives in complex food matrices. In this review, the basic principles of SERS and general approaches to successfully apply SERS in food analysis are covered from an applications perspective...
Wed, 01/22/2020 - 03:31
Author(s): Xinli Xing, Zhanle Chen, Qian Tian, Yao Mao, Weijie Liu, Mingming Shi, Cheng Cheng, Tianpeng Hu, Gehao Zhu, Ying Li, Huang Zheng, Jiaquan Zhang, Shaofei Kong, Shihua QiAbstract:Characterization and source identification of PM2.5–bound polycyclic aromatic hydrocarbons (PAHs) are conducted in urban Wuhan (WH), suburban Pingdingshan (PDS), and rural Suizhou (SZ) in China during summer...
Wed, 01/22/2020 - 03:26
Environmental contamination can negatively impact fish populations. In addition to acute toxicity leading to death, toxicants can reduce fish growth and lower reproduction. The potential for adverse population level effects of environmental contaminants are estimated to conduct risk assessments from laboratory toxicity tests that most often measure apical endpoints related to growth, survival and...
Wed, 01/22/2020 - 03:26
BACKGROUND In the last years, there is a concern about the presence of pesticides in honey since residues of DDT and carbaryl were found in honey samples. The traditional techniques, such as chromatography, reach the required limits of detection (LOD) but are not suitable for in‐situ implementation in honey packaging industry due to their high cost and the need of highly qualified staff for...
Tue, 01/21/2020 - 03:23
Many threats exist to reptile populations, environmental pollutants being one of them. Lizards and other reptiles are usually not taken into consideration in environmental risk assessments, with the use of surrogate species for their estimates. Unfortunately, not all pesticides have the same effects in the reptile species and on these surrogates, birds and mammals, some being more toxic in...
Sun, 01/19/2020 - 03:25
Dissipation behavior and degradation kinetics of fenamidone + mancozeb (Sectin 60 WG) and iprovalicarb + propineb (Melody Duo 66.75 WP) in tomato were studied at recommended dose (RD) and double dose (DD) of application. The analysis of the field samples were carried out by employing liquid chromatography tandem mass spectrometry (LC–MS/MS) for fenamidone and iprovalicarb residues and gas...
Thu, 01/16/2020 - 03:29
Author(s): Yue Su, Weijun Wang, Jiye Hu, Xiaolu LiuAbstractThe dissipation and residues of tembotrione in corn field application were investigated using liquid chromatography tandem mass spectrometry (LC-MS/MS) method. The average recoveries of tembotrione in maize, corncob, and straw were in the ranges of 98–107% with relative standard deviations (RSDs ≤9.3%), respectively. The recoveries of M5...
Wed, 01/15/2020 - 03:25
BACKGROUND Common bean is a staple food in Latin America and Africa, however, studies about contamination of common bean with pesticides are rarely reported. So, the goals of this study were to validate a multiresidue method and apply it in monitoring of pesticides in common beans. Extraction was performed applying QuEChERS approach to ground samples. C18 and PSA were used for clean‐up and a...
Wed, 01/15/2020 - 03:24
The increased concern on the consequence of exposure to multiple chemical combinations has led national regulatory authorities to develop different concepts to conduct risk assessments on chemical mixtures. Pesticide residues were identified as “problem formulation” in the respective European regulations and in this context, the European Food and Safety Authority has suggested to group pesticidal...
Sun, 01/12/2020 - 03:30
Author(s): Katarzyna Czaja, Paweł Struciński, Wojciech Korcz, Maria Minorczyk, Agnieszka Hernik, Bożena WiadrowskaAbstractConsumers are constantly exposed to trace levels of residues present in food commodities, arising from the use of pesticides. For this reason, assessing the risk caused by pesticide residues present in food requires not only identification and toxicological properties...
Sat, 01/11/2020 - 03:26
This work provides a simple and rapid method for synthesis uniform simetryn imprinted nanoparticles, which can be used to pretreat the tested samples before detecting. A series of computational approach were employed for design simetryn‐imprinted polymer. Based on the conclusion of theoretical calculation, the simetryn imprinted nanoparticles were synthesized using simetryn as template,...
Fri, 01/10/2020 - 03:34
by Shagnika Das, Andres Aria, Jing-O Cheng, Sami Souissi, Jiang-Shiou Hwang, Fung-Chi Ko Sediment profile and mud shrimp (Austinogebia edulis) from the coastal wetland of central Taiwan in 2017 and 2018 were analyzed for concentration, source, and composition of persistent organic pollutants (POPs) including polycyclic aromatic hydrocarbon (PAHs), polybrominated diphenyl ethers (PBDEs),...
Thu, 01/09/2020 - 04:00
Author(s): Jinxia Dai, Changling Jiang, Guanwei Gao, Li Zhu, Yunfeng Chai, Hongping Chen, Xin LiuAbstractThere are few studies for risk assessment of cartap and its metabolites, although cartap is easily transformed into metabolites which could induce higher toxicity. This study aimed to investigate the dissipation pattern of cartap and its metabolites during tea planting, manufacturing and...
Wed, 01/08/2020 - 03:35
Author(s): Xiaoying Lin, Jiating Zhao, Wei Zhang, Lina He, Liming Wang, Dunhu Chang, Liwei Cui, Yuxi Gao, Bai Li, Chunying Chen, Yu-Feng LiAbstractEnvironmental pollutants like methylmercury (MeHg) can bring devastating neurotoxicity to animals and human beings. Gut microbiota has been found to demethylate MeHg and promote the excretion of Hg through feces. However, the impacts of MeHg on gut...
Tue, 01/07/2020 - 03:27
A modified QuEChERS protocol with a nitrogen-doped graphitized carbon derived from dicyandiamide sludge as a cleanup sorbent has been developed to determine 20 organochlorine pesticides in tomatoes using gas chromatography coupled to a triple-quadrupole mass analyzer. Compared with traditional QuEChERS adsorbents, N-doped graphitized carbon exhibited higher recoveries toward the target pesticides...
Sat, 01/04/2020 - 03:36
Author(s): Shilpa Surendran, Kiruthika Selvaraj, Christopher Turner, Srivalli Addanki, Nanda Kishore Kannuri, Arindam Debbarma, Suneetha Kadiyala, Sanjay Kinra, Helen WallsAbstractLow fruit and vegetable consumption is a key contributor to all forms of malnutrition. This qualitative study examined the perceptions of people living in peri-urban villages of Hyderabad, India, to characterise the...
Fri, 01/03/2020 - 03:48
Bacteria, fungi, viruses, and nematodes are the major causal agents of plant diseases. These phytopathogens are responsible for about 10–40% losses in productivity and quality of food crops and horticultural produce. Although eradication of pathogens is not possible, control of plant diseases has been an area of continuous improvement/research. Use of antimicrobials, bacteriophages, and...
Fri, 01/03/2020 - 03:47
Pecan nut is a crop of growing economic importance with a worldwide production around 124,000 tons during the 2017/2018 harvest. Thus, a simple and fast method for the determination of pesticide residues in this crop based on a QuEChERS sample preparation procedure and liquid chromatography tandem mass spectrometry (LC-MS/MS) analysis was developed and validated. Despite the complexity of this...

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