2.2. Preparation of samples
Se-GBR was prepared as described previously (Liu, Chen, Zhao,Gu, & Yang, 2011). Brown rice was germinated in the dark with 60 lmol/L sodium selenite at 25 C for 60 h. After germination, samples were washed with ultrapure water, and dried at 40 C for further use. GBR was prepared with the distilled water with the same process.