Health Research Registry List

Research Registry No : HRID-00134_V8
University Departmental Research : No
Registration Date : 2020-05-26
Title of Research : Pesticide residue (Chlorpyrifos) analysis in rice from different markets
Principle Investigator : Phyo Wai zin
Co-authors : Myo Nanda Aung, Khin Phyu Phyu, Khine Khine Lwin, Aye Min Maw, Seng Raw
Field of Research : Others
Publication Source :
Year of Publication : -
URL of Publication : -
Presentation Source : 48th Myanmar Health Research Congress. 2020; P77
Placement of Presentation : DMR
Year of Presentation : 2020
Abstract : Rice is important components of the human diet. Pesticides are chemical compounds that are used to kill pests including insects, rodents, fungi and weeds for better yield and quality of crops. According to report of Ministry of agriculture, livestock and irrigation, chlorpyrifos is one of the most commonly used pesticides in agricultural sector. Therefore, this study was conducted to investigate the possible contamination of Chlorpyrifos residues in rice sold in the different markets of Yangon. It was a cross-sectional descriptive study. Total 20 rice samples (Paw San Mhwe, Nga-Kywel, Sin Thwel and Zee Yar) were collected from Bayintnaung market, Thingangyuan market and Kandawgyi park farmer market. Pesticide residue analysis was determined by using Gas Chromatography Mass Spectrometry (GC-MS) at Department of Medical Research and the method for determination of pesticide was validated. For the sample extraction, Bond Elut Original QuChERS Method Extraction Kit was used. Chromatogram for showing peak of standard chlorpyrifos was at retention time 19.2 minutes. In this study, all the rice samples contained no detectable level of chlorpyifos residue. However, it contained other compounds like (Z)-18-Octadec-9-enolide, hexadecanoic acid 2-hydroxy-1-(hydroxymethyl) ethyl ester and E,E,Z-1,3,12-nonadecatriene-5,14-diol in most of the rice samples. These compounds are saturated fatty acid and vitamin E commonly found in plants and vegetables. Although this study showed that there was no detectable amount of chlorpyrifos residues in rice samples from different markets of Yangon, research on pesticide residues monitoring in rice should be continued more for consumer safety and export.
IRB/PRC/ERC Approval Date : 2019-02-04
Placement of IRB/PRC/ERC : Department of Medical Research
IRB/PRC/ERC Approval Letter/Document : 26052020070330DRPWZ.pdf
Pre-existing Registration ID : -
Pre-existing Name of Organization : -
Pre-existing Website : no