https://ph02.tci-thaijo.org/index.php/mmres/issue/feed 2024-07-11T15:08:40+07:00 Professor Dr. Torranin Chairuangsri mmres.mst@gmail.com Open Journal Systems <p><em>Microscopy and Microanalysis Research-The Journal of The Microscopy Society of Thailand</em> &nbsp;(<em>Microsc. Microanal. Res.</em>) is formerly known as <em>Newsletter Electron Microscopy Society of Thailand</em> (1984-1987), the <em>Journal of the Electron Microscopy Society of Thailand</em> (<em>JEMST</em> Vol. 1-21, 1987-2016) and the <em>Journal of Microscopy Society of Thailand</em> (<em>JMST</em> Vol. 22-29, 2008-2016). The journal title has been changed to <em>Microsc. Microanal. Res</em>. since January 2017 (Vol. 30, No.1, January-June 2017) to get more attention from international readers and authors.</p> <p><em>Microsc. Microanal. Res.</em> publishes original research articles two volumes a year. Articles include the applications of microscopy and microanalysis to important problems in the fields of physical science and biological science. The originality and significance of the research and the quality of the microscopy or microanalysis involved are the criteria for acceptance of manuscripts.</p> https://ph02.tci-thaijo.org/index.php/mmres/article/view/251482 2023-11-20T20:55:25+07:00 Yupadee Paopun rdiydp@ku.ac.th Piyanan Thanomchat rdipnt@nontri.ku.ac.th Nustsaba Kronburee nustsaba.kro@ku.ac.th

<p>Calcium oxalate (CaOX) is commonly found in Thai herbs and in wild taro. CaOX is claimed to be a cause of kidney stones in humans who consume plants that contain CaOX. The aim of this study was to investigate the presence of CaOX crystals in leaf and petiole parts of<em> C. esculenta</em> using a light microscope, a scanning electron microscope and an energy-dispersive X-ray spectrometer. Various shapes of CaOX crystal were found, including needle-like (raphide), druse, hexagonal and octahedron. They occur in the leaf blade, midrib and petiole. In terms of size, the needle-like crystals were 45-62.5 µm long and 1.42-2 µm wide. The druses were 4.01-65.10 µm in diameter. In comparison, the hexagonal crystals were 2.71-33.80 µm long and 1.01-6.61 µm wide. The octagonal crystals were 1.8-7.38 µm long and 1.92-10.50 wide. The needle crystals formed raphide clusters in the cells while hexagonal and orthorhombic crystals were individually present in the cells. Energy dispersive X-ray spectra and X-ray maps showed that the crystals consisted of calcium (Ca) and oxygen (O). The results of this study are preliminary data that could be used in the medical field and human health care.</p>

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