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http://dx.doi.org/10.7740/kjcs.2013.58.3.292

Palatability and Physicochemical Properties in 2001 Yield Increased by 10% than Normal Level in 2000  

Lee, Jeom-Sig (Rice Research Division, NICS, RDA)
Lee, Jeong-Heui (Rice Research Division, NICS, RDA)
Yoon, Mi-Ra (Rice Research Division, NICS, RDA)
Kwak, Jieun (Rice Research Division, NICS, RDA)
Mo, Young Jun (Rice Research Division, NICS, RDA)
Chun, Areum (Rice Research Division, NICS, RDA)
Kim, Chung-Kon (Rice Research Division, NICS, RDA)
Publication Information
KOREAN JOURNAL OF CROP SCIENCE / v.58, no.3, 2013 , pp. 292-300 More about this Journal
Abstract
In this study, we examine the palatability and physicochemical properties of rice in the year, when there was 10% increase in yield compared to normal year due to daily temperature range and sunshine hours. The results of the analysis of rice yield over the last 20 years (1993-2012) showed 10% difference between the yield in 2000, which was normal, and that in 2001. With regard to the crop weather condition during the ripening period in 2001 compared to 2000, the daily range and sunshine hours were higher, but the mean temperature was similar. The rice yield in 2001 was 9.8% higher than that in 2000 due to the increased number of spikelets per panicles and ratio of ripened grain. In terms of chemical traits, protein, Mg, and K contents decreased in 2001 compared to 2000, but amylose content increased. Trough and final viscosity assessed with a Rapid Visco Analyser were significantly higher in 2001 than 2000. The quality of cooked rice was measured through the Toyo Mido Meter Glossiness Value (TGV) instead of a palatability score because a sensory test produces relative comparison values rather than absolute values. The correlation coefficients between the sensory evaluation parameters and the TGV in several rice materials harvested in two years showed a highly significant positive correlation ($r=0.81^{**}-0.89^{**}$, n=27-47). TGV was also significantly higher in 2001 than in 2000. The results suggested that the palatability of cooked rice was good in 2001 with about 10% increase in rice yield compared to normal year in 2000 due to daily temperature range and sunshine hours.
Keywords
rice; palatability; sensory quality; temperature range; sunshine hours;
Citations & Related Records
Times Cited By KSCI : 13  (Citation Analysis)
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