Figures & data
Table 1. 
and values for rice bran extracts 1–7 in ethanol at 35.0 °C, relative rate constants , and relative SOAC Values.
Fig. 1. Measurement of the amounts of carotenoids contained in Nipponbare.
Notes: Typical UV chromatograms of (A) three carotenoid standards and (B) Nipponbare (rice bran extract 3).
Table 2. Amounts of three carotenoids contained in rice bran extracts 1–7.
Fig. 2. Measurement of the second-order rate constant (kQ) for the reaction of Wataribune with singlet oxygen.
Notes: (A) Change in the absorbance of DPBF at 411 nm during the reaction of DPBF with 1O2 in the absence and presence of AOs (α-tocopherol and Wataribune (rice bran extract 2)) in ethanol at 35 °C. [DPBF] = 6.29 × 10−5 M and [EP] = 8.12 × 10−4 M. (B) Change in the absorbance of DPBF, where the correction of baseline due to Wataribune was performed (see text). (C) Plot of ln (Absorbance) vs. time. (D) Plot of SBlank/SWataribune vs. [Wataribune]. (E) Plot of t1/2Wataribune/t1/2Blank vs. [Wataribune].
short-legendScheme 1. 
Table 3. Comparison between observed and calculated 1O2-quenching rates ( (Obsd.) and for Koshihikari (6) in ethanol solution.
Table 4. Comparison between observed and calculated 1O2-quenching rates ( (Obsd.) and (Calcd.) (See Text)) for rice bran extracts 1–7 in ethanol, ratio of the rate constants ( (Obsd.)/ (Calcd.)), and contributions of (i) 4 Tocs and 4 Toc-3s, (ii) 3 Cars, and (iii) γ-Ory.
Supplemental material
