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Study of Surface Morphology of Low-Pressure Plasma Treated Rice by SEM and Contact Angle Measurement |
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| รหัสดีโอไอ | |
| Creator | W. Arworn, P. Rintarak, S. Khamrat, W. Chaiwat, R. Wongsagonsup, M. Suphantharika, S. Dangtip |
| Title | Study of Surface Morphology of Low-Pressure Plasma Treated Rice by SEM and Contact Angle Measurement |
| Publisher | The Microscopy Society of Thailand |
| Publication Year | 2560 |
| Journal Title | Microscopy and Microanalysis Research - The Journal of the Microscopy Society of Thailand |
| Journal Vol. | 1 |
| Journal No. | 1 |
| Page no. | 33-36 |
| Keyword | Low-pressure plasma, rice, morphology, contact angle |
| ISSN | 08575288 |
| Abstract | This study focused on using low-pressure plasma processing on polished "white" rice and unpolished "riceberry" brown rice. Plasma treatment reduced the water contact angle on riceberry rice from 120.6??1.0? to 89.8??1.5?. Scanning electron microscope (SEM) images showed morphology of an external surface and a cross sectional view of the interior just below the surface of a rice kernel. The SEM image revealed a ?m thin layer, 10-?m square-like pockets, and an endosperm of a few-mm across. The underlying pockets contain a lot of starch granules. SEM images also showed many pores on the top surface opening down to the pocket-like structure underneath after low-pressure plasma treatment. This effect caused the rice kernel to be more hydrophilic and agreed well with lower water contact angle. This work has demonstrated the feasibility of applying low-pressure plasma to improve the cooking quality of rice. |
