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Annual Variation of Quality in Commercial Rice Produced in Gyeongbuk  

Won Jong-Gun (Gyeongbuk Agricultural Technology Administration)
Park Sang-Gu (Gyeongbuk Agricultural Technology Administration)
Ahn Duok-Jong (Gyeongbuk Agricultural Technology Administration)
Park So-Deuk (Gyeongbuk Agricultural Technology Administration)
Publication Information
KOREAN JOURNAL OF CROP SCIENCE / v.51, no.3, 2006 , pp. 227-232 More about this Journal
Abstract
Rice quality must certainly be considered as one of the primary preference for consumers. On aspect concerns marketing, such attributes as appearance, physicochemical characteristics, and palatability of brand rice are very important. Therefore this study was carried out to observe the quality of commercial brand rice in Gyeongbuk Province, Korea from 2002 to 2004. In seasonal changes of mean air temperature from early July to middle August, it was lower in 2003 by $0.8{\sim}3.3^{\circ}C$ than that in normal year. Among the rice quality characteristics, the cv of percentage of head rice and palatability (Toyo value) were very low but those of chalky rice and protein content were very high during three years, and the same tendency was also observed among the brands. The average percentages of head rice were 92.5% in 2002, 89.9% in 2003 and 93.3% in 2004, respectively. On the contrary, the percentages of chalky rice were higher in 2003 as 4.9% than those in 2002 (3.9%) and in 2004 (2.8%). These results were caused by the abnormal meteorological conditions in 2003. Due to the higher protein content (8.0%) in 2003, the palatability was deteriorated to 71.0. However the protein content in 2004 was reduced to 7.0% and this result improved the palatability to 77.0.
Keywords
head rice; protein content; palatability; brand rice;
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