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http://dx.doi.org/10.9721/KJFST.2021.53.4.486

Water-absorption characteristics and cooked rice texture of milled rice  

Choi, Induck (Department of Central Area Crop Science, National Institute of Crop Science, Rural Development of Adminstration (RDA))
Oh, You-Geun (Department of Central Area Crop Science, National Institute of Crop Science, Rural Development of Adminstration (RDA))
Kwak, Jieun (Department of Central Area Crop Science, National Institute of Crop Science, Rural Development of Adminstration (RDA))
Chun, Areum (Department of Central Area Crop Science, National Institute of Crop Science, Rural Development of Adminstration (RDA))
Kim, Mi-Jung (Department of Central Area Crop Science, National Institute of Crop Science, Rural Development of Adminstration (RDA))
Hyun, WoongJo (Department of Central Area Crop Science, National Institute of Crop Science, Rural Development of Adminstration (RDA))
Publication Information
Korean Journal of Food Science and Technology / v.53, no.4, 2021 , pp. 486-494 More about this Journal
Abstract
A rice (Oryza sativa L.) cultivar of the SPP (stakeholder participatory program) and ordinary rice were characterized based on water-absorption properties and cooked rice texture. During rice soaking, the rice grain transformed from transparent to opaque (white), indicating that water molecules diffused into the rice grain during soaking. In addition, cracks in the internal structure of soaked rice gradually increased with an increase in soaking time. Water absorption increased rapidly up to 20 min, but no increment was observed after 30 min of soaking. At this point, the entire areas of the soaked rice grain turned white, indicating that water absorption had reached saturation. SPP rice showed lower hardness and higher stickiness in its cooked form than ordinary rice, suggesting that SPP rice could be a more preferable choice than ordinary rice. Furthermore, cooked SPP rice was more edible in terms of hardness and stickiness after being kept warm for 12 h than ordinary rice. These results indicated that cooked SPP rice exhibited slow retrogradation and improved taste.
Keywords
stakeholder participatory program; soaking; water-absorption; cooked rice; texture;
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