In order to identify the types of pesticide residues and maximum residue limit (MRLs) values in strawberries, national estimated daily intake short-term were used assess risk different populations, respectively. Meanwhile, existing MRLs standard was evaluate consumer protection level, ranking matrix rank detected pesticides.The results showed that a total 14 pesticides all strawberries with det...

A rapid, high-throughput method employing ultra-performance liquid chromatography with tandem quadrupole mass spectrometry (UPLC-MS/MS) was developed and optimized for simultaneous quantification and confirmation of 64 pesticide residues and their toxic metabolites in fruit extracts prepared by a buffered QuEChERS procedure. The total time required for UPLC-MS/MS analysis was 8 min plus 2 min f...

The Development of an analytical method for the determination of 24 multiclass pesticides in mango at the ≤10 ng g level. The method involves extraction of 10 g of homogenized mango samples (2 g of Sodium chloride+8g of Magnesium sulfate) with 10 mL of Acetonitrile; Clean up by Dispersive solid phase extraction with a combination of primary secondary amine (PSA), graphitized carbon black (GCB) ...

We investigated presence and levels of DDT in 163 breast milk samples from four South African villages where, in three of them, malaria is controlled with DDT-sprayed indoors. Mean ΣDDT levels in breast milk were 18, 11, and 9.5 mg/kg mf (milk fat) from the three DDT-sprayed villages, respectively, including the highest ΣDDT level ever reported for breast milk from South Africa (140 mg/kg mf). ...

Ochratoxin A (OTA) is one of the most important mycotoxins that contaminate a broad range of agricultural and food products. In this study, the occurrence of OTA in available brands of grape juice in Iran purchased from retail outlets or producer were determined for the first time using high-performance liquid chromatography (HPLC) with immunoaffinity columns(IAC) as the clean-up step. The aver...

Interfering maximum residue limits (MRLs) for pesticides with agricultural trade is becoming important food and policies in the early 21st century. Differing levels pesticide residues among countries have potential to disrupt significantly. We employ a non-linear disaggregated stringency index quantify degree of regulatory heterogeneity between trading nations fruits vegetables 2013 2014 invest...

A total of 548 raw milk samples were collected in the western, central and eastern regions of Croatia during February and March 2015. Aflatoxin M1 (AFM1) concentrations were quantified by the enzyme immunoassay method. The method limits of detection (LOD) and quantification (LOQ) were 22.2 and 34.2 ng/kg, respectively. The mean AFM1 levels measured in the three regions were (ng/kg) as follows: ...

Quality of milk plays a key role in its wide consumption but also involvement large series derived products, such as yogurt, cheese, butter, and ice cream. An effective LC-MS/MS method has been validated for the determination 81 different pesticide residues samples. The analyses comprised 44 samples collected during 2019. From all inspected pesticides, only metalaxyl (present 11.36% samples), b...

MRL-1237, [1-(4-fluorophenyl)-2-(4-imino-1,4-dihydropyridin-1-yl) methylbenzimidazole hydrochloride], is a potent and selective inhibitor of the replication of enteroviruses. To reveal the target molecule of MRL-1237 in viral replication, we selected spontaneous MRL-1237-resistant poliovirus mutants. Of 15 MRL-1237-resistant mutants obtained, 14 were cross-resistant to guanidine hydrochloride (...