γ‐Oryzanol concentrations in various rice genotypes ripened under different air temperatures

Abstract Background and Objective Two steryl ferulates (γ‐oryzanol), that is, cycloartenyl ferulate 24‐methylenecycloartanyl ferulate, were previously isolated as biomarkers for heat stress during ripening in rice ( Oryza sativa L.). γ‐Oryzanol is also known to exert several biomedical effects, such antihyperlipidemic, antidiabetic, anti‐inflammatory, anticancer activities. In the present study, we aimed determine effect of air temperature 1–30, 1–15, 16–30 days after heading on concentrations γ‐oryzanol using 92 genotypes. Findings The concentration had strong negative correlations with daily maximum temperatures heading. However, total exhibited positive minimum 1–15 Moreover, there genotypic differences these compounds. Conclusion can be modulated by selection cultivars growing seasons. Significance Novelty This study investigates genotypes ripened under different temperatures, which provided essential information development farming methods modulating concentration.