There were wide range of variations in the total phenolics in rice
grain (Table 1, Fig. 1). Among all the rice accessions, total phenolic
content ranged from 108.1 to 1244.9 mg GAE/100 g, with the lower
values coming from the white rice, while the higher values were
from red and black rice (Fig. 1). Variations were still found within
the white rice and red rice, ranging from 108 to 251 mg GAE/100 g
and from 165.8 to 731.8 mg GAE/100 g for white and red rice,
respectively (Table 1). However, several red rice accessions still had
lower total phenolic contents than the white rice (Fig. 1).
Flavonoid contents in all the rice ranged from 88.6 to
286.3 mg RE/100 g. The mean flavonoid contents among the white,
red and black rice were 131.6, 147.2 and 240.6 mg RE/100 g,
respectively. Even though red rice had average higher levels of
flavonoids than the white rice, some red rice accessions still had