Proceedings of the Korean Society of Crop Science Conference (한국작물학회:학술대회논문집)
- 2017.06a
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- Pages.69-69
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- 2017
Changes of physiochemical properties of LOX-3 null rice lines stored at different storage temperatures and periods
- Shin, Woon-Chul (Crop Breeding Division, National Institute of Crop Science, RDA) ;
- Kim, Jeong-Ju (Crop Breeding Division, National Institute of Crop Science, RDA) ;
- Park, Hyun-Su (Crop Breeding Division, National Institute of Crop Science, RDA) ;
- Jeong, Jong-Min (Crop Breeding Division, National Institute of Crop Science, RDA) ;
- Baek, Man-Kee (Crop Breeding Division, National Institute of Crop Science, RDA) ;
- Nam, Jeong-Kwon (Crop Breeding Division, National Institute of Crop Science, RDA) ;
- Park, Seul-Gi (Crop Breeding Division, National Institute of Crop Science, RDA) ;
- Kim, Choon-Song (Crop Breeding Division, National Institute of Crop Science, RDA) ;
- Cho, Young-Chan (Crop Breeding Division, National Institute of Crop Science, RDA) ;
- Kim, Bo-Kyeong (Crop Breeding Division, National Institute of Crop Science, RDA)
- Published : 2017.06.04
Abstract
Due to the lack in storage facility, considerable amount of rice is stocked in the open air, which causes increased stale flavor and deteriorates palatability and merchantable quality. Lipoxygenase-3(LOX-3) is involved in the production of volatile constituents in stored rice, and the development of stale flavor is delayed in LOX-3 null rice. LOX activity in the rice grain is localized in bran fraction and the tropical Japonica cultivar 'Dawdam' was reported that the absence of LOX-3 is inherited as a simple recessive trait. Also, it was reported that the peroxidation of unsaturated fatty acids occurs at lower levels in the 'Dawdam' bran fraction during storage than in rice varieties with LOX-3. This study was conducted to develop LOX-3 null rice lines using 'Dawdam' and investigate changes of physicochemical properties of the lines stored at different storage temperatures and periods. So we analyzed texture, toyo glossiness value, germination rate and lipoxygenase activity of 15 LOX-3 null rice lines on the condition of which rough rice had been stored at different temperatures (high temperature condition at