Abstract
This study was conducted to investigate the effects of high hydrostatic pressure on the functional compounds of germinated rough rice. Rough rice was germinated at 37 °C over a 2-day period and then subjected to 0.1, 10, 30, 50, and 100 MPa for 24 h. Before-germination (BG) and after-germination (AG) samples were prepared and analyzed for functional compounds. The highest total polyphenol content (1.5 ± 0.2 mg/g) was found after 30 MPa. The highest γ-aminobutyric acid (GABA) content (111.4 ± 4.1 mg/g), total arabinoxylan content (5.4 ± 0.6 %), and γ-oryzanol content (46.1 ± 4.1 mg/100 g) were found after 50 MPa. Phytic acid decreased with pressure from 4.0 ± 0.1 mg/g (0.1 MPa) to 1.0 ± 0.1 mg/g (100 MPa). These results suggest that high hydrostatic pressure treatments may increase the functional properties of germinated rough rice.
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