A New Method Development and Validation for Identification and Quantification of Methoxyfenozide Insecticide Residues in Grapes using High Performance Liquid Chromatography

Murthy, Svs; Rao, Tentu Nageswara; Revathi, Prathipati; Seshamma, S.

doi:10.20546/ijcmas.2017.603.088

Cited by 1 publication

(1 citation statement)

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“…Quantification of Methoxyfenozide by HPLC-UV/QTOF. For the release experiments, a method by Murthy et al 33 was modified for MFZ measurement by high-performance liquid chromatography (HPLC) with UV and electrospray ionization−quadrupole time of flight mass spectrometry (ESI−QTOF MS) detection. The mobile phase was composed of (A) LC-MS grade water (Supelco OmniSolv, EMD Millipore, Burlington, MA) with 0.1 wt % formic acid (Honeywell Fluka, Muskegon, MI) and (B) LC-MS grade acetonitrile (J.T.…”

Section: ■ Materials and Methodsmentioning

confidence: 99%

Zein Nanoparticles for Enhanced Translocation of Pesticide in Soybean (Glycine max)

Hanna

Lopez

Salinas

et al. 2022

ACS Agric. Sci. Technol.

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Zein nanoparticles (ZNPs) are proposed as effective delivery systems capable of enhancing the translocation of nonsystemic agrochemicals from the roots to the leaves of soybean plants. ZNPs with entrapped methoxyfenozide (MFZ) (209.0 ± 5.6 nm and −42.1 ± 2.1 mV) were formed via emulsion-evaporation and used to facilitate the translocation of MFZ from the roots to the leaves and stems, as measured by liquid chromatography-mass spectrometry (LC-MS), under hydroponic conditions. MFZ concentration increased within the leaves over time from 0.04 to 2.35 μg g −1 at 0.2 mg mL −1 ZNPs exposure, compared to free MFZ (<0.02 μg g −1 ) after 24 h of exposure. The MFZ release from ZNPs, as measured by high-performance liquid chromatography (HPLC), followed pseudo-first-order kinetics at 25 °C, with a faster release at lower ZNP concentrations than at higher concentrations. ZNPs may prove to be a versatile delivery system for other agrochemicals due to their ability to enhance translocation within plants.

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Section: ■ Materials and Methodsmentioning

confidence: 99%