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KMID : 0665220180310050760
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Korean Journal of Food and Nutrition
2018 Volume.31 No. 5 p.760 ~ p.765
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Characterization of Physical Quality of Rice based on Reheating Process
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Kim Hyun-Joo
Woo Koan-Sik
Lee Seuk-Ki
Lee Byong-Won
Lee Ji-Hae
Lee Yu-Young
Lee Byoung-Kyu
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Abstract
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In order to observe physical properties of rice depending on reheating, the study cooked rice developed for high quality cooked rice and analyzed physical properties of rice depending on reheating following 24 hr refrigeration. As a result of palatability of cooked rice, Samgkwang had the lowest hardness, while Daebo and Haiami had the highest one. With respect to adhesiveness, toughness and stickiness, Sindongjin exhibited lowest properties. After cooking each rice by cultivars, the study observed their color, texture properties, and microstructure immediately after cooking, after 24 hr of refrigeration and further on. Lightness of cooked rice tended to drop because of refrigeration and reheating. Analysis of texture properties after cooking revealed that Haiami marked the highest points in all categories. When stored for 24 hr after cooking, hardness, viscosity and chewiness increased in cooked rice followed by a decrease after reheating. Observation of the microstructure of cooked rice using a scanning electron microscope revealed that Haiami had its particles in the center as closely condensed.
It was apparent that all the cultivars formed stoma in an obvious manner because of refrigeration and reheating. The results of the present study show that physical properties of cooked rice varied according to reheating after cooking and storage depending on the inherent characteristics of rice cultivars
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KEYWORD
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rice, cultivar, reheat, physical, quality
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