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Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes

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https://www.readbyqxmd.com/read/28541776/enantioselective-apoptosis-and-oxidative-damage-induced-by-individual-isomers-of-profenofos-in-primary-hippocampal-neurons
#1
Xian T Lu, Yun Ma, Hang J Zhang, Mei Q Jin, Jun H Tang
The purpose of this study was to investigate the apoptosis-related cytotoxic effects and molecular mechanisms of individual isomers of profenofos (PFF) on primary hippocampal neurons at 1.0 to 20 mg L(-1). The cell viability and lactate dehydrogenase (LDH) efflux indicated that (-)-PFF exposure was associated with more toxic effects than (+)-PFF above the concentration of 5 mg L(-1) (P < 0.5). Flow cytometric results showed that the percentages of apoptotic cells incubated with 20 mg L(-1) (-)-PFF, (+)-PFF and rac-PFF for 24 h reached 23...
May 25, 2017: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/28541126/oxidative-stress-and-hepatotoxicity-in-the-frog-rana-chensinensis-when-exposed-to-low-doses-of-trichlorfon
#2
Bo Li, Yu Ma, Yu H Zhang
Trichlorfon is an organophosphate insecticide that is widely used in aquaculture and agriculture against parasitic infestations and has caused aquatic toxicity to non-target organisms. To evaluate the effects of low doses of trichlorfon on the oxidative stress and hepatotoxicity in amphibians, Chinese brown frogs (Rana chensinensis) were exposed to trichlorfon at concentrations of 0, 0.01, 0.1, and 1.0 mg/L for 2 and 4 weeks. Then, the activities of superoxide dismutase (SOD), catalase (CAT), glutathione S-transferase (GST), and the content of malondialdehyde (MDA) in hepatic tissue were examined to evaluate the effects of oxidative stress and lipid peroxidation...
May 25, 2017: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/28541121/investigation-of-the-binding-and-simultaneous-quantifications-of-propanil-and-bromoxynil-herbicide-concentrations-in-human-serum-albumin
#3
Eric Appah, Brianda Elzey, Sayo O Fakayode
This study reported the use of UV-visible and fluorescence spectroscopy and partial-least-square (PLS) multivariate regression for accurate and simultaneous quantifications of two widely used herbicides, propanil, 3',4'-dichloropropionanilide (PPL) and bromoxynil, 3,5-dibromo-4-hydroxybenzonitrile (BXL) in human serum albumin (HSA) at physiological conditions. The binding affinity and thermodynamic properties of PPL-HSA and BXL-HSA complexes were also investigated. Partial-least-square (PLS) regression was used to collate the variability in the absorption or emission spectra of PPL-HSA and BXL-HSA complexes with PPL and/or BXL concentrations in HSA samples...
May 25, 2017: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/28541098/the-impact-of-pesticides-on-oxidative-stress-level-in-human-organism-and-their-activity-as-an-endocrine-disruptor
#4
Agata Jabłońska-Trypuć, Elżbieta Wołejko, Urszula Wydro, Andrzej Butarewicz
Pesticides cause serious environmental and health problems both to humans and animals. The aim of this review is to discuss selected herbicides and fungicides regarding their mode of action and their influence on basic oxidative stress parameters and endocrine disruption properties tested in selected cell cultures in vitro. Because of numerous difficulties which animal studies are subject to, cell cultures are an excellent experimental model reflecting human exposure to different pesticides through all relevant routes...
May 25, 2017: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/28541097/ozonation-of-whole-wheat-flour-and-wet-milling-effluent-degradation-of-deoxynivalenol-don-and-rheological-properties
#5
Allana P S Alexandre, Nanci Castanha, Maria A Calori-Domingues, Pedro E D Augusto
The objective of this study was to evaluate the reduction on the levels of the mycotoxin deoxynivalenol (DON) in whole wheat flour (WWF) with different moisture levels, on the wet milling effluent through ozone (O3) processing, as well as the impact of ozonation on the rheological properties of flour. The results have shown that the reduction of DON was improved with increasing moisture and exposure time of WWF and wet milling effluent to ozone. The maximum reduction was about 80%, proving that ozonation is an effective and promising technology in reducing mycotoxins in different products...
May 25, 2017: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/28494222/distribution-and-incorporation-mode-of-the-herbicide-mcpa-in-soil-derived-organo-clay-complexes
#6
Patrick Riefer, Timm Klausmeyer, Burkhard Schmidt, Andreas Schäffer, Jan Schwarzbauer
The incorporation of xenobiotics into soil, especially via covalent bonds or sequestration has a major influence on the environmental behavior including toxicity, mobility, and bioavailability. The incorporation mode of 4-chloro-2-methylphenoxyacetic acid (MCPA) into organo-clay complexes has been investigated under a low (8.5 mg MCPA/kg soil) and high (1000 mg MCPA/kg soil) applied concentration, during an incubation period of up to 120 days. Emphasis was laid on the elucidation of distinct covalent linkages between non-extractable MCPA residues and humic sub-fractions (humic acids, fulvic acids, and humin)...
May 11, 2017: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/28494209/antibiotic-resistance-virulence-factors-and-biofilm-formation-ability-in-escherichia-coli-strains-isolated-from-chicken-meat-and-wildlife-in-the-czech-republic
#7
Silvie Pavlickova, Anja Klancnik, Magda Dolezalova, Sonja Smole Mozina, Ivan Holko
Attachment of pathogenic bacteria to food contact surfaces and the subsequent biofilm formation represent a serious threat for the food industry, since these bacteria are more resistant to antimicrobials or possess more virulence factors. The main aim of this study was to investigate the correlation between antibiotic resistance against 13 antibiotics, distribution of 10 virulence factors and biofilm formation in 105 Escherichia coli strains according to their origin. The high prevalence of antibiotic resistance that we have found in wildlife isolates could be acquired by horizontal transfer of resistance genes from human or domestic or farm animals...
May 11, 2017: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/28494204/bio-and-toxic-elements-in-mushrooms-from-the-city-of-ume%C3%A3-and-outskirts-sweden
#8
Małgorzata Mędyk, Małgorzata Grembecka, Justyna Brzezicha-Cirocka, Jerzy Falandysz
Edible mushrooms (Albatrellus ovinus, Boletus edulis, Clitocybe odora, Gomphidius glutinosus, Leccinum scabrum, Leccinum versipelle, Lycoperdon perlatum, Suillus bovinus, Suillus luteus, and Xerocomus subtomentosus) collected from unpolluted areas of the city of Umeå and its outskirts in the northern part of Sweden were examined for contents of toxic metallic elements (Cd, Pb, and Ag) and essential macro- and microelements (K, Na, Ca, Mg, Cu, Fe, Mn, and Zn) using a validated method and a final measurement by flame atomic absorption spectroscopy (F-AAS)...
May 11, 2017: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/28494203/carbofuran-degraded-by-iron-doped-anatase-weakening-the-cholinesterase-inhibitory-activity-in-the-photoproducts-mixture
#9
Martín M Dávila-Jiménez, María P Elizalde-González, Esmeralda García-Díaz, Miguel González, M E Mendoza, M J Robles-Águila
Carbofuran is a toxic carbamate pesticide, and its use has increased in recent years. While marketing information indicates stability in different chemical media, carbofuran exhibits relative photolability. The aim of this research was to decompose carbofuran and to identify the photoproducts achieved when two different doped titania photocatalysts were employed under UV irradiation. The iron-doped TiO2 materials were obtained (a) via a hydrothermal method and (b) by an ultrasound-assisted sol-gel method. The precursors were TiOSO4⋅xH2O and Fe3(NO3)·9H2O...
May 11, 2017: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/28494194/17%C3%AE-estradiol-mineralization-under-field-and-laboratory-incubations
#10
Annemieke Farenhorst, Inoka Amarakoon, Lindsey Andronak
Mineralization studies of natural steroid hormones (e.g., 17β-estradiol, E2) are performed in environmental incubators, usually under a constant temperature such as 20°C. In this paper, we present a microcosm protocol that quantified the mineralization of E2 in soils under field temperatures. The nine agricultural soils tested had a wide range of soil organic carbon (1.1 to 5.2%) and clay (9 to 57%) contents. The calculated time over which half of the applied E2 was mineralized (E2-½) ranged from 299 to 910 d, and total E2 mineralization at 48 d (E2-TOT48) ranged from 4 to 13%...
May 11, 2017: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/28489978/sodium-bisulfate-and-a-sodium-bisulfate-tannin-mixture-decreases-ph-when-added-to-an-in-vitro-incubated-poultry-cecal-or-fecal-contents-while-reducing-salmonella-typhimurium-marker-strain-survival-and-altering-the-microbiome
#11
Peter M Rubinelli, Sun Ae Kim, Si Hong Park, Stephanie M Roto, Steven C Ricke
The objective of the present study was to investigate the ability of animal feed-grade sodium bisulfate (SBS) and a mixture of sodium bisulfate/tannin to inhibit the growth of Salmonella using an anerobic in vitro mixed cecal culture to mimic the conditions within the chicken cecum. An initial inoculum of Salmonella Typhimurium was introduced to an anerobic dilution solution containing 1/3000 diluted cecal bacteria and solids consisting of ground chicken feed and different percentages of solid SBS or SBS/tannin, and surviving organisms were enumerated...
May 10, 2017: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/28489977/distribution-of-pesticide-residues-in-soil-and-uncertainty-of-sampling
#12
Gabriela K Suszter, Árpád Ambrus
Pesticide residues were determined in about 120 soil cores taken randomly from the top 15 cm layer of two sunflower fields about 30 days after preemergence herbicide treatments. Samples were extracted with acetone-ethyl acetate mixture and the residues were determined with GC-TSD. Residues of dimethenamid, pendimethalin, and prometryn ranged from 0.005 to 2.97 mg/kg. Their relative standard deviations (CV) were between 0.66 and 1.13. The relative frequency distributions of residues in soil cores were very similar to those observed in root and tuber vegetables grown in pesticide treated soils...
May 10, 2017: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/28489976/testing-the-efficiency-of-extraction-of-incurred-residues-from-soil-with-optimized-multi-residue-method
#13
Gabriella K Suszter, Árpád Ambrus
The reproducibility of extraction of residues from spiked soil samples and from soils containing incurred residues was tested with (14)C-labeled test compounds of different physical-chemical properties. Nearly 100% of the compounds added to the sample before extraction could be recovered with an average reproducibility relative standard deviation (CV) of 5.4%. The additional steps of the determination process (cleanup, evaporation, etc.) contributed to the major part of the variability of the results (CV = 10-20%)...
May 10, 2017: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/28489970/photostability-study-of-cis-configuration-neonicotinoid-insecticide-cycloxaprid-in-water
#14
Shuang Hou, Yingying Zhuang, Yayun Deng, Xiaoyong Xu
Cycloxaprid (CYC) is a new cis-configuration neonicotinoid insecticide, which is currently under development in China for agricultural pest control. Considering the photodegradation of CYC is important for the application of CYC in the future, the photochemical behavior of CYC in aqueous solution was herein investigated in a "merry-go-round" reactor under a 300 W high-pressure mercury lamp. Twenty-five photodegradation products were identified via UPLC-TOF-ESI-MS/MS. The results suggested that NTN32692, the precursor of CYC was the predominant photodegradation product...
May 10, 2017: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/28489966/acrylamide-induced-disturbance-of-the-redox-balance-in-the-chick-embryonic-brain
#15
Marta Batoryna, Marcin Lis, Grzegorz Formicki
This study was undertaken to determine the redox balance in the developing brain after exposure to acrylamide (ACR), a potent neurotoxin. The studies were performed using an in ovo chick embryo model. The antioxidant enzymes SOD, GPx, CAT, and reduced glutathione (GSH) were used as indicators of the redox balance. Eggs were injected with ACR doses of 40 mg kg(-1) egg mass (2.4 mg egg(-1)) on embryonic day 17 (E17). The activity of the antioxidant enzymes and the concentration of GSH were measured at E17, E18, and E19 in the medulla oblongata, cerebrum, cerebellum, and optic lobe...
May 10, 2017: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/28353414/emerging-technology-for-increasing-glucosinolates-in-arugula-and-mustard-greens
#16
George F Antonious, Eric Turley, Alexander Antonious, Thomas Trivette
Two plant species, arugula (Eruca sativa) and mustard (Brassica juncea) were field-grown under four soil management practices: soil mixed with municipal sewage sludge (SS), soil mixed with horse manure (HM), soil mixed with chicken manure (CM), and no-mulch bare soil (NM) to investigate the impact of soil amendments on the concentration of glucosinolates (GSLs) in their shoots. GSLs, hydrophilic plant secondary metabolites in arugula and mustard were extracted using boiling methanol and separated by adsorption on sephadex ion exchange disposable pipette tips filled with DEAE, a weak base, with a net positive charge that exchange anions such as GSLs...
March 29, 2017: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/28353397/elemental-composition-and-nutritional-value-of-the-edible-fruits-of-coastal-red-milkwood-mimusops-caffra-and-impact-of-soil-quality-on-their-chemical-characteristics
#17
Sihle Mngadi, Roshila Moodley, Sreekantha B Jonnalagadda
In this study, the elemental distribution of essential and toxic elements in the soil and fruits of the indigenous plant species, Mimusops caffra, from ten sites along the KwaZulu-Natal east coast was investigated using inductively coupled plasma-optical emission spectrometry. This was done to determine the nutritional value of the fruits as well as to evaluate the impact of soil quality on elemental uptake by the plant. The elemental concentrations in the fruits (in descending order) were found to be K > Na > Ca > Mg > Si > Al > Fe > Zn > Mn > Ni > Cr > Cu > Pb > Mo > Sb > As > Se > V > Cd > Co...
March 29, 2017: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/28353395/comparison-of-atmospheric-concentrations-of-currently-used-pesticides-between-urban-and-rural-areas-during-intensive-application-period-in-alsace-france-by-using-xad-2%C3%A2-based-passive-samplers
#18
Celine Liaud, Jean-Jacques Schwartz, Maurice Millet
XAD-2® passive samplers (PAS) have been exposed simultaneously for 14 days on two sites, one rural and one urban, situated in Alsace (East of France) during intensive pesticides application in agriculture (between March and September). PAS have been extracted and analyzed for current-used pesticides and lindane with an analytical method coupling accelerated solvent extraction (ASE), solid-phase microextraction (SPME) and GC/MS/MS. Results show the detection of pesticides is linked to the period of application and spatial and temporal variabilities can be observed with these PAS during the selected sampling period...
March 29, 2017: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/28353394/lc-ms-ms-determination-of-pesticide-residues-in-fruits-and-vegetables
#19
Anna Stachniuk, Agnieszka Szmagara, Renata Czeczko, Emilia Fornal
The aim of the research is to evaluate pesticide residue contamination of fresh and frozen fruits and vegetables, agricultural raw material, purchased from Polish farmers for production of frozen fruits and vegetables, and the estimation of the multiresidue method effectiveness expressed as the proportion of pesticides detected in food samples to the total number of pesticides analyzed by multiresidue methods. A total of 144 samples (of black currants, red currants, raspberries, cherries, strawberries, blackberries, cauliflowers and broccoli) were analyzed using LC-MS/MS method for the determination of 60 pesticides...
March 29, 2017: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/28353389/aminocyclopyrachlor-sorption-desorption-and-leaching-from-three-brazilian-soils
#20
Jeane G Francisco, Kassio F Mendes, Rodrigo F Pimpinato, Valdemar L Tornisielo, Ana C D Guimarães
This study aimed to evaluate the sorption-desorption and leaching of aminocyclopyrachlor from three Brazilian soils. The sorption-desorption of (14)C-aminocyclopyrachlor was evaluated using the batch method and leaching was assessed in glass columns. The Freundlich model showed an adequate fit for the sorption-desorption of aminocyclopyrachlor. The Freundlich sorption coefficient [Kf (sorption)] ranged from 0.37 to 1.34 µmol ((1-1/n)) L(1/n) kg(-1) and showed a significant positive correlation with the clay content of the soil, while the Kf (desorption) ranged from 3...
March 29, 2017: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
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