GBR is produced by soaking brown rice grains in water
to promote germination, and GABA accumulates during
this process. GBR contains vitamins, minerals, fiber, and
effective components such as phytic acid (Graf & Empson,
1987; Hunt, Johnson, & Juliano, 2002) and ferulic acid
(Tian, Nakamura, & Kayahara, 2004). Although normal
brown rice has high nutritional value, its popularity is
low because it cannot be cooked in a conventional rice cooker.
However, GBR is easily cooked and the texture is
softer than that of brown rice. Therefore, GBR could
become a popular healthy food. In this study, we examined
the accumulation of GABA in GBR and proposed a new
method of processing.