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http://dx.doi.org/10.7740/kjcs.2012.57.1.035

Changes in Contents of Nutritional Components and Eating Quality of Brown Rice by Pericarp Milling  

Kim, Hye-Won (Rice Research Division, National Institute of Crop Science, Rural Development Administration)
Oh, Sea-Kwan (Rice Research Division, National Institute of Crop Science, Rural Development Administration)
Kim, Dae-Jung (Rice Research Division, National Institute of Crop Science, Rural Development Administration)
Yoon, Mi-Ra (Rice Research Division, National Institute of Crop Science, Rural Development Administration)
Lee, Jeong-Heui (Rice Research Division, National Institute of Crop Science, Rural Development Administration)
Choi, Im-Soo (Rice Research Division, National Institute of Crop Science, Rural Development Administration)
Kim, Yeon-Gyu (Rice Research Division, National Institute of Crop Science, Rural Development Administration)
Cha, Kil-Nam (Rice Born co. Ltd.)
Publication Information
KOREAN JOURNAL OF CROP SCIENCE / v.57, no.1, 2012 , pp. 35-40 More about this Journal
Abstract
In this study, the effect of degree of milled wax layer on compositions (protein and total dietary fiber content), Alkali Digestion Value (ADV), and texture (hardness, stickiness, toughness, and adhesiveness) with brown rice was investigated. For all the rice cultivars, $Baegjinju$, $Keunnun$, $Samkwang$, and $Seolgaeng$, protein content decreased significantly as the degree of pericarp milling increased ($p$<0.05). Total dietary fiber (TDF) content for $Keunnun$ (9.56%${\rightarrow}$8.09%) and $Samkwang$ (8.05%${\rightarrow}$7.06%) significantly decreased with the degree of removed wax layer. ADV was not affected by being removed wax layer, but ADV of $Samkwang$ was increased from 3.56 to 6.78. As the degree of removed wax layer increased (0%${\rightarrow}$10%), hardness and toughness of cooked brown rice were decreased but stickiness and adhesiveness was increased. The ratio of adhesiveness to hardness was increased with decreased wax layer of brown rice. Accordingly, It suggests that the regulation of the wax layer with brown rice was effected texture of cooked brown rice. The milling technology in wax layer of brown rice is that might be thought to be very useful in rice processing industry.
Keywords
brown rice; milled wax layer; texture of cooked brown rice; ratio of adhesiveness to hardness;
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