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Volume 8, Issue 5 (Suppl)
J Chromatogr Sep Tech, an open access journal
ISSN: 2157-7064
Chromatography 2017
August 07-09, 2017
August 07-09, 2017 | Rome, Italy
4
th
World Congress on
Chromatography
Determination of kinetics and pre-harvest residue limit of pyriofenone in oriental melon (
Cucumis
melo
var.
makuwa
) grown under regulated climatic conditions
Hyung Suk Chung, Md Humayun Kabir, Han Sol Lee, Md Musfiqur Rahman
and
Jae-Han Shim
Chonnam National University, South Korea
A
high-performance liquid chromatography–ultraviolet detection was used to estimate the disappearance rates as well
as the pre-harvest residue limits (PHRLs) of pyriofenone in oriental melon (
Cucumis melo
var.
makuwa
) grown under
greenhouse conditions at two different locations (A and B) in Seongju, Republic of Korea. The identity of the compound
in standard solution and representative field incurred samples was confirmed using liquid chromatography-tandem mass
spectrometry (LC-MS/MS). The method was validated in terms of linearity, limits of detection and quantification, accuracy
(expressed as recovery %), and precision (expressed as relative standard deviation %) for accurate and precise quantitation.
Notably, the residual levels of field incurred samples collected over 0 day through 10 days post-application were below the
maximum residue level (MRL=0.2 mg/kg) established by the Korean Ministry of Food and Drug Safety. Site A showed lower
residue levels and a higher decline rate than site B, which might be attributed to seasonal variation (high temperature) and
increased metabolic and enzyme profiling in the mature fruits. The half-lives were similar, 4.9 and 4.3 days, at sites and B,
respectively. Using the pre-harvest residue limit, we predicted the residue amounts at ten and five days before harvest, which
resulted in concentrations lower than the provisional MRL at harvest time.
Figure 1:
Dissipation pattern and pre-harvest residue limit curves of pyriofenone in oriental melon.
Biography
Hyung Suk Chung is pursuing her Master degree at Chonnam National University, Republic of Korea. He is interested in Food Safety from harmful materials such
as pesticides and veterinary antibiotics. He participated in many projects that developed the analytical method for determining pesticides and veterinary antibiotics
in several environmental factors such as crops, water, and monitoring.
jhsgudtjr@naver.comHyung Suk Chung et al., J Chromatogr Sep Tech 2017, 8:5(Suppl)
DOI: 10.4172/2157-7064-C1-032