Abstract
Rice is the staple food in Malaysia. There are limited literature about study on the
elemental levels and observation on ultrastructure of commercially available white rice
and brown rice in Malaysia. Therefore, the objectives of this study were to determine
the concentration of elements in three uncooked long rice grain, i.e. two brown rice and
one white rice varieties that are commercially available in Malaysia using inductively
coupled plasma mass spectrometry (ICP-MS) and compare the structure and elements
of uncooked and cooked rice grain using Scanning Electron Microscopy-Energy
Dispersive X-Ray Spectroscopy (SEM-EDX). The ICP-MS results of the three
uncooked rice grains showed high concentration of copper, manganese and zinc,
followed with potassium, magnesium and calcium. Besides, the element contaminant
such as plumbum, antimony and cadmium in the rice grains were under Malaysian
permissible limit (Malaysian Food Act, 1983) and international standard (FAO/WHO,
2002). Arsenic was below Malaysian permissible limit but higher than safe limit by
international standard. Silicon was observed in brown rice after viewed by using SEMEDX. Besides, brown rice showed higher concentration of elements than white rice.
Ong Mei , Rohana Abdul , Wan Rosli, Noor Aman , Fadzlina Hamid, Vasanti Malik, Walter Willet, Frank Hu. (2019) Elemental analysis of commercially available rice samples in Malaysia by using ICP-MS and SEM-EDX, Asian Journal of Agriculture and Biology, Volume 7, Issue 2.
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