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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/30199345/growth-photosynthesis-and-removal-responses-of-the-cyanobacteria-chroococcus-sp-to-malathion-and-malaoxon
#1
Karina Martínez-Aguilar, Ignacio Alejandro Pérez-Legaspi, Eustacio Ramírez-Fuentes, Ma Nieves Trujillo-Tapia, Luis Alfredo Ortega-Clemente
Malathion is an organophosphorus pesticide widely used in agricultural crops, despite its toxicity. In addition, malaoxon occurs by oxidation of malathion being more toxic. The toxic effects of malathion and malaoxon in humans include hepatoxicity, breast cancer, genetic damage and endocrine disruption. The aim of this study involved assessing the effect of malathion commercial grade on Chroococcus sp., and its potential as an alternative to the removal of this pesticide and its transformation product such as malaoxon...
September 10, 2018: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/30199334/dissipation-and-translocation-of-saisenxin-in-tobacco-and-soil-under-conventional-field-and-controlled-laboratory-conditions
#2
Dan D Wang, Kun M Zheng, Xiao Q Li, Yu P Zhang, Ling Z Chen, De Y Hu
The aim of this investigation was to investigate the fate and translocation characteristics of saisenxin (SSX), a novel organic zinc fungicide, in the environment and tobacco plants under conventional field and laboratory conditions. A rapid and sensitive analytical technique based on high-performance liquid chromatography was used for determination of SSX, in soil samples and tobacco leaf, stem and root samples. The method had satisfactiry linearity (R2  = 0.9999) and the limits of detection and of quantitation of the target compound were 0...
September 10, 2018: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/30199326/effect-of-ozonization-in-degradation-of-trifluralin-residues-in-aqueous-and-food-matrices
#3
Maria A L Milhome, Lucélia K de Lima, Crisiana de A Nobre, Francisco de A F Lima, Ronaldo F do Nascimento
This study investigates the oxidation of trifluralin residues during ozonation in aqueous and food matrices (tomato). Domestic ozonation equipment with average production of 23.9 mg O3  L-1  h-1 was used in the tests. Modern chromatographic systems (SPME-GC-IT/MS/MS and QuEChERS-GC-IT/MS/MS) were applied for extraction and detection of trifluralin residue in fortified samples of ultrapure water, tap water, superficial water and tomato fruit. The samples were submitted to the ozonation process during 0, 5, 10 and 20 min...
September 10, 2018: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/30199321/microwave-enhanced-advanced-oxidation-treatment-of-dairy-manure
#4
I Tunile, A Srinivasan, P H Liao, K V Lo
The microwave enhanced advanced oxidation process (MW-AOP) was used to treat dairy manure in a continuous-flow 915 MHz microwave wastewater treatment system. The treatment efficiency increased with an increase in temperature, as well as hydrogen peroxide dosage. The settling property was also improved in all treated sets, regardless of temperature applied. The system operated at temperatures >100 °C had a much higher soluble chemical oxygen demand than at temperatures <100 °C. The highest soluble carbonaceous compounds, orthophosphate and ammonia were obtained at 110 °C and 0...
September 10, 2018: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/30199320/levels-of-organochlorine-pesticides-in-amazon-turtle-podocnemis-unifilis-in-the-xingu-river-brazil
#5
Marina Teófilo Pignati, Larissa Costa De Souza, Rosivaldo de Alcântara Mendes, Marcelo de Oliveira Lima, Wanderlei Antonio Pignati, Juarez Carlos Brito Pezzuti
Due to the toxicity and high environmental persistence of organochlorine pesticides in aquatic organisms, turtles have been studied as environment biomonitors. These animals are important sources of protein for the riverside and indigenous peoples of the Brazilian amazon. In the present study, organochlorine pesticide contamination was investigated in Podocnemis unifilis. Liver, muscle and fatty tissue samples were removed from 50 specimens collected from five sampling points located in the Xingu River basin...
September 10, 2018: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/30199317/identification-and-comprehensive-evaluation-of-a-novel-biocontrol-agent-bacillus-atrophaeus-jzb120050
#6
Mi Ni, Qiong Wu, Junli Wang, Wei C Liu, Jian H Ren, Dian P Zhang, Juan Zhao, DE W Liu, Ying H Rao, Cai G Lu
Bacillus spp. have long been used as biocontrol agents because of their efficient broad-spectrum antimicrobial activity. We identified a novel strain of Bacillus atrophaeus, named JZB120050, from soil. B. atrophaeus JZB120050 had a strong inhibitory effect against Botrytis cinerea and many other phytopathogens. Gas chromatography-mass spectrometry showed that B. atrophaeus JZB120050 produced many secondary metabolites, such as alkanes, alkenes and acids; some of which were related to pathogen inhibition. Enzyme activity analysis showed that B...
September 10, 2018: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/30199316/the-effect-of-adaptation-of-lactobacillus-amylovorus-to-increasing-concentrations-of-sweet-potato-starch-on-the-production-of-lactic-acid-for-its-potential-use-in-the-treatment-of-cannery-waste
#7
Winifred Akoetey, Ruben Morawicki
Lactobacillus amylovorus, an amylolytic species, was cultured in increasing concentrations of sweet potato starch to test the effect of this progressive acclimation on lactic acid production. This research is part of a project on the use of the waste stream from a sweet potato cannery to produce lactic acid. The media used for this acclimation was a modified version of the de Man, Rogosa and Sharpe medium, in which glucose was partially or totally substituted with sweet potato starch. The process was done in five steps, starting with 100% glucose in the first step and ending with 100% sweet potato starch in the last one...
September 10, 2018: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/30036130/spatio-temporal-variations-of-selected-pesticide-residues-in-the-kurose-river-in-higashi-hiroshima-city-japan
#8
Russel C G Chidya, Sherif M Abdel-Dayem, Kazuhiko Takeda, Hiroshi Sakugawa
This study investigated spatio-temporal variations of selected pesticide residues in the Kurose River in Higashi-Hiroshima city (Hiroshima Prefecture), Japan. Water samples were collected from the river at seven sites every month for 1 year (March 2016 to February 2017). Pesticide residues were extracted from the samples by a solid phase extraction using Sep Pack C18 cartridges. Once extracted, the samples were analyzed for cyanazine, simetryn, fenarimol, isoprothiolane, and diazinon using a reversed-phase high-performance liquid chromatography ultraviolet visible (HPLC-UV Vis) system...
July 23, 2018: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/30024830/analysis-of-lipid-peroxidation-in-animal-and-plant-tissues-as-field-based-biomarker-in-mediterranean-irrigated-agroecosystems-extremadura-spain
#9
Rosa De Las Heras, José Luis Rodríguez-Gil, Jon San Sebastián Sauto, Paz Sánchez Sánchez, Myriam Catalá
The development of field-based biomarkers can allow for a more reliable assessment of the exposure of organisms to pollutants. Different sampling sites, along two streams running through an irrigable agricultural area, were selected to evaluate the effect of agrochemical load on the measured endpoints. The levels of lipid peroxidation were evaluated in several organs of Procambarus clarkii. The same method was applied to leaves of two woody species. Determining levels of MDA (malonaldehyde) by thiobarbituric acid reactive substances assay allows measuring the levels of lipid peroxidation...
July 19, 2018: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/30024824/assessment-of-boscalid-and-pyraclostrobin-disappearance-and-behavior-following-application-of-effective-microorganisms-on-apples
#10
Magdalena Podbielska, Ewa Szpyrka, Bartosz Piechowicz, Stanisław Sadło, Mateusz Sudoł
The aim of this study is to assess the disappearance of boscalid (IUPAC name: 2-chloro-N-[2-(4-chlorophenyl)phenyl]pyridine-3-carboxamide) and pyraclostrobin (IUPAC name: methyl N-[2-[[1-(4-chlorophenyl)pyrazol-3-yl]oxymethyl]phenyl]-N-methoxycarbamate) residues in apple fruit, and to verify whether an organic fertilizer enriched with strains of antagonistic microorganisms can reduce pesticide residue levels. Field trials were conducted in a commercial orchard on apples of the Gloster variety, during 21 days after the treatment with Bellis 38 WG and the subsequent application of Zumba Plant formulation containing Bacillus spp...
July 19, 2018: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/30024818/national-short-term-dietary-exposure-assessment-of-a-selected-group-of-pesticides-in-argentina
#11
Darío A Maggioni, Marcelo L Signorini, Nicolás Michlig, María R Repetti, Mirna E Sigrist, Horacio R Beldomenico
An evaluation of acute dietary exposure to pesticide residues, applying deterministic and stochastic methods, was performed for a selected group of pesticides in two representative age groups from Argentina. Thus, 28 active ingredients (a.i.) and 75 food items were evaluated for the group of 2-5-year-old children, while 9 a.i. and 59 food items were considered for the 10-49-year-old women group. A deterministic assessment was conducting following the Food and Agriculture Organization (FAO) and World Health Organization (WHO) procedure but using the national maximum residue limits (MRLs) as pesticide residue concentration data, while in the stochastic approach, a theoretical distribution modeled with the available information was used...
July 19, 2018: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/30024815/degradation-dynamics-residues-and-risk-assessment-of-dufulin-enantiomers-in-corn-plants-and-corn-by-lc-ms-ms
#12
Li H Shi, Shan Zhao, Ting Gui, Jin Xu, Fei Wang, Yu P Zhang, De Y Hu
The degradation dynamics and terminal residues of dufulin enantiomers were investigated in two typical corn plants. A convenient and precise chiral method by high-performance liquid chromatography coupled with tandem triple quadrupole mass spectrometry (HPLC/MS/MS) using a Chiralpak IC column was developed and validated for measuring dufulin enantiomers in corn plants and corn. The two enantiomers of dufulin quickly dissipated in the corn plant, and no noticeable stereoselectivity was observed during degradation or in the final residues...
July 19, 2018: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/30020853/the-control-effect-of-fungicide-pyraclostrobin-against-freckle-disease-of-banana-and-its-residue-dynamics-under-field-conditions
#13
Mengran Yang, Jingjing Zhang, Jing Zhang, Muhammad Rashid, Guohua Zhong, Jie Liu
Fungicide pyraclostrobin has been widely employed to control plant diseases by inhibiting the mitochondrial respiration of pathogenic fungi. Due to its broad spectrum, the extensive use of pyraclorstrobin was reported to cause emerging resistance on crops. Here, we evaluated the control effect of 250 g L-1 of pyrachlostrobin suspension concentrate (SC) against freckle disease (caused by Phyllosticta spp) on banana. Meanwhile, the dissipation and residue dynamics of pyraclostrobin in banana and soil under field conditions were determined by high performance liquid chromatography (HPLC) with DAD detection in different locations...
July 18, 2018: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/30015566/magnetic-molecularly-imprinted-polymer-prepared-by-microwave-heating-for-confirmatory-determination-of-chloramphenicol-in-chicken-feed-using-high-performance-liquid-chromatography-tandem-mass-spectrometry
#14
Sumate Kunsa-Ngiem, Pakawadee Sutthivaiyakit, Pongsak Lowmunkhong, Mourad Harir, Philippe Schmitt-Koppling, Somyote Sutthivaiyakit
A magnetic molecularly imprinted polymer (MMIP) for chloramphenicol was prepared using a surface-imprinted and microwave-heating-induced polymerization method. The surfaces of the magnetic particles were first double-bond functionalized with 3-(trimethoxysilyl)propyl methacrylate (γ-MPS), followed by the copolymerization of 4-vinyl pyridine (4-VP) and trimethylolpropane trimethacrylate (TRIM) in the presence of chloramphenicol as a template and 1,1-azobis(cyclohexane-carbonitrile) (ABCN) as an initiator in a mixture of dimethyl sulfoxide and water with microwave heating at 80°C...
July 17, 2018: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/29999452/application-of-a-lc-ms-ms-method-for-multi-mycotoxin-analysis-in-infant-formula-and-milk-based-products-for-young-children-commercialized-in-southern-brazil
#15
Karina M Tonon, Geovana D Savi, Vildes M Scussel
An analytical method based on liquid chromatography-tandem mass spectrometry (LC-MS/MS) was validated and applied for the analysis of aflatoxin M1 (AFM1 ), ochratoxin A (OTA) and deoxynivalenol (DON) in infant formula and milk-based products for young children commercialized in Brazil. A total of 38 samples were evaluated, including 12 infant formula, 14 follow-on formula and 12 samples of milk-based products. AFM1 was detected in 12 (32%) samples, and seven (18%) samples contained AFM1 levels above the method limit of quantification in a concentration range between 0...
July 12, 2018: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/29995574/developing-an-anaerobic-digester-with-external-zeolite-filled-column-for-enhancing-methane-production-from-swine-manure-a-feasibility-study
#16
D Thushari N Wijesinghe, Kithsiri B Dassanayake, Peter Scales, Deli Chen
Development of digesters with an external zeolite column facilitates the convenient removal of the zeolite with TAN, without disturbing the continuous anaerobic digestion process. A digester with an inside zeolite bed (In-Zeo) and digester without adding zeolite (No-Zeo) were employed to compare the process performance with digester with external zeolite column (EX-Zeo). The cumulative, CH4 yields were 5% and 15% greater in the EX-Zeo, and the In-Zeo digesters respectively compared to the No-Zeo digesters. Also, the % VS reduction was 49%, 55% and 41%, respectively in the Ex-Zeo, In-Zeo and No-Zeo digesters...
July 11, 2018: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/29719194/mineral-constituents-in-leccinum-scabrum-from-lowland-locations-in-the-central-europe-and-their-relation-to-concentration-in-forest-topsoil
#17
Jerzy Falandysz
Leccinum scabrum is an edible mushroom common in European regions in the northern hemisphere. Macro and trace mineral constituents such as Ag, Al, Ba, Ca, Cd, Co, Cu, Fe, K, Mg, Mn, Na, Ni, Pb, P, Rb, Sr and Zn were studied in L. scabrum and in the top soil collected from the same location underneath soil substratum. The "pseudo-total" and labile (extractable fraction of minerals) were measured to get insight into the levels, distribution between the morphological parts of fruiting bodies, potential for their bioconcentration by mushroom and evaluated for human exposure via consumption of the mushroom...
August 3, 2018: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/29708850/examination-of-the-influence-of-phenyltrimethylammonium-chloride-ptma-concentration-on-acetochlor-adsorption-by-modified-montmorillonite
#18
Lazar M Kaluđerović, Zorica P Tomić, Darko P Ašanin, Rada D Đurović-Pejčev, Branka J Kresović
The results presented in this paper show an impact of the concentration of the aromatic organic cation on the adsorption of acetochlor on the surface of the organic-modified montmorillonite. Natural montmorillonite from Bogovina (Boljevac municipality, Serbia) was used for organic modification in this experiment. Cation exchange capacity of this montmorillonite (86 mmol 100 g-1 of clay) was determined using the methylene blue method. In pretreatment, montmorillonite was modified with NaCl. For the purpose of organic modification, three different concentrations of phenyltrimethylammonium chloride (PTMA) have been selected, based on calculated CEC value: 43 mmol 100 g-1 of clay (0...
August 3, 2018: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/29708841/chemical-indicators-of-exposure-to-polychlorodibenzo-p-dioxins-polychlorodibenzofurans-and-polychlorobiphenyls-in-breast-milk-samples-from-mothers-residing-in-trento-italy-and-neighboring-country-municipalities
#19
Miniero Roberto, Ferri Fabiola, Carraro Valter, Franchini Silva, Fulgenzi Anna Rita, Iacovella Nicola, Ingelido Anna Maria, De Felip Elena
A human biomonitoring study was carried out in the province of Trento, northern Italy, on two groups of women residing in areas with presumably different levels of exposure to polychlorodibenzo-p-dioxins (PCDDs), polychlorodibenzofurans (PCDFs) and polychlorobiphenyls (PCBs). The aim was characterization of the possible impact of a steel plant and an urban environment on the internal doses of these contaminants. The areas investigated were the following: (i) the municipality of Borgo Valsugana, where a steel plant has been operating for the last 30 years, and (ii) the city of Trento...
August 3, 2018: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/29708834/antioxidant-activity-shown-by-olive-pomace-extracts
#20
Alessandra De Bruno, Rosa Romeo, Francesca L Fedele, Andrea Sicari, Amalia Piscopo, Marco Poiana
In this study, the effects of experimental variables such as type of solvent, sample/solvent ratio, and time of extraction have been evaluated to individuate the best results in phenolic recovery by Olive Pomaces (OP) belonging to Carolea and Ottobratica cultivars. Folin-Ciocaulteu procedure and DPPH and ABTS assays were used, respectively, for total phenol quantification and total antioxidant activity of pomace extracts. The ethanol/water mixture was resulted the most efficient extraction solvent for both olive cultivars...
August 3, 2018: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
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