This paper presents the results of the audit on pesticide residues in cereal grains throughout Poland in 2013. The number of all samples of cereal grains was 380. Altogether 292 active substances of plant protection products were checked in the audit. Qualitative and quantative analyses were done according to Polish Standard PN-EN 15562:2008, using the LC-MS/MS technique. The methods (QuEChERS)...

Imidacloprid is a neonicotinoid pesticide heavily used by the agricultural industry and shown to have negative impacts on honey bees above certain concentrations. We evaluated the effects of different imidacloprid concentrations in sugar syrup using cage and field studies, and across different environments. Honey bee colonies fed sublethal concentrations of imidicloprid (0, 5, 20 and 100 ppb) o...

Here we reported a residue-free green nanotechnology which synergistically enhance the pesticides efficiency and successively eliminate its residue. We built up a composite antifungal system by a simple pre-treating and assembling procedure for investigating synergy. Investigations showed 0.25 g/L ZnO nanoparticles (NPs) with 0.01 g/L thiram could inhibit the fungal growth in a synergistic mode...

Y.H. Chiu1, M.C. Afeiche2, A.J. Gaskins1,3, P.L. Williams3,4, J.C. Petrozza5, C. Tanrikut6, R. Hauser2,3, and J.E. Chavarro1,3,7,* Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston,MA 02115, USA Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA Department of Epidemiology, Harvard T.H. Chan School of Public Health, Bosto...

Pectin methylesterases (PMEs) are enzymes produced by bacteria, fungi and higher plants. They belong to the carbohydrate esterase family CE-8. This study deals with comparison of 127 amino acid sequences of this family containing the five characteristic sequence segments: 44_GxYxE, 113_QAVAL, 135_QDTL, 157_DFIFG, 223_LGRPW (Daucus carota numbering). Six strictly conserved residues (Gly44, Gly15...