Lipid substances, such as fatty acids, γ-oryzanol, policosanols, and tocol (tocopherol + tocotrienol), were investigated in two rice cultivars, Ilpum and Dasan, during rice development. In both cultivars, the lipid extract level decreased steadily after it reached its maximum level. Additionally, there were differences in the fatty acid composition, depending on the rice developmental stage, between the two cultivars. The γ-oryzanol level increased during rice development, and there were differences in the composition of γ-oryzanol between the two cultivars. The levels of policosanols drastically decreased during the early stage of rice development in the two cultivars. The total tocol level showed a downward trend during rice development. The predominant tocol isomer in Ilpum was α-tocopherol during rice development. In Dasan, the predominant tocol isomer was α-tocopherol at the early stage, but γ-tocotrienol at the later stage. This study provided information on the levels and composition of lipid substances, such as fatty acids, γ-oryzanol, policosanols, and tocol during rice development.
Bibliographical noteFunding Information:
This work was carried out with the support of “Cooperative Research Program for Agriculture Science & Technology Development (Project title: Quality characteristics of rice in relation to eating quality, Project No. PJ00923903)” Rural Development Administration, Republic of Korea.
© 2015 Elsevier Ltd. All rights reserved.
Copyright 2017 Elsevier B.V., All rights reserved.
- Fatty acid
- Grain development
- Rice (Oryza sativa L.)
ASJC Scopus subject areas
- Molecular Biology
- Plant Science