The horticultural sector is a key contributor to Kenya’s gross domestic product through the export of fresh-cut flowers, fruits and vegetables various niche markets. It employs over 350,000 people, while about six million depend on it. However, constrained by strict technical phytosanitary quality requirements set concerns include presence pests microbial contaminants, chemical residues constit...

Abstract A method for simultaneous determination of trace four organophosphorus pesticides residues in animal liver samples has been developed and validated. This is based on the preliminary sample preparation using extraction target compound with a mixture toluene-cyclohexane by means up-to-date accelerated solvent (ASE), liquid-liquid partitioning acetonitrile hexane, additional clean up step...

Phosalone, malathion and diazinon were analyzed in corn oil using solid phase extraction (SPE)with lanthanum silicate as a new solid sorbent followed by gas chromatography with nitrogenphosphorus detection (GC-NPD). The efficiency of different eluents (methanol, dichloromethane,ethyl acetate, dichloromethane — ethyl acetate (1:1) and ethyl acetate — methanol (1:1)) werecompared for elution of o...

Kenya is one of the leading exporters snap beans (Phaseolus vulgaris) to Europe, but export volume has remained below potential mainly due failure meet market quality standards. The concerns include presence regulated and quarantine pests, pesticide residues, harmful organisms, noncompliance with technical These challenges call for development alternative approaches in overcoming phytosanitary ...

Abstract The objective of this study was to optimize the analytical method for multi-class veterinary drug residues 64 compounds in fishery products. Several from drugs are banned or unauthorized products according Korean Food Code. Samples were extracted using acetonitrile/water (4:1, v/v) and clean-up step carried out by adding octadecylsilane acetonitrile-saturated hexane. target confirmed q...

Spinach is a frequently consumed vegetable worldwide. Chemical pesticides are widely used to produce spinach with high yield and quality. However, the unregulated use of negatively impacts human environmental health. A simple efficient method using dispersive solid-phase extraction (d-SPE) combined field experiments was conducted study residue dissipation methoxyfenozide, chlorantraniliprole, i...

This study examined the larvicidal effect of trunk-injected abamectin and emamectin benzoate against walnut husk fly (Rhagoletis completa Cresson, 1929). Walnut trees in two locations years were injected with pesticides at different concentrations. For toxicokinetic studies, active ingredient content was measured leaves, flowers, husks, kernels, using a UHPLC-MS/MS analytical method. The infest...

The surface and output of organic agriculture is growing steadily in recent years, being generally seen as a healthier, safer more sustainable alternative to conventional agriculture. Comparisons between products are nonetheless scarce the literature, especially case wine. aim this study was compare sulphite content pesticide residues both soils wines under production. Fourteen samples vineyard...