Influence of Applied Pressure on Bioactive Compounds of Germinated Rough Rice (Oryza sativa L.)
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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.
KeywordsGerminated rough rice High hydrostatic pressure treatment Bioactive compounds
This research was supported by the High Value-added Food Technology Development Program (112077-03-SB010), Ministry of Agriculture, Food and Rural Affairs.
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