Scientific Evidence of Rice By-Products for Cancer Prevention: Chemopreventive Properties of Waste Products from Rice Milling on Carcinogenesis In Vitro and In Vivo
Table 5
Polyphenolic compounds present in the rice by-products.
Polyphenolic compounds
Rice bran
Rice husk
Brewers’ rice
Gallic acid (µg/g)
—
80% methanol extract =
Water extract =
Protocatechuic acid (µg/g)
70% ethanol extract of light brown rice bran = not
80% methanol extract =
—
70% ethanol extract of purple rice bran =
70% ethanol extract of red rice bran =
p-Hydroxybenzoic acid (µg/g)
—
80% methanol extract =
—
Chlorogenic acid (µg/g)
—
80% methanol extract =
—
Vanillic acid (µg/g)
70% ethanol extract of light brown rice bran = 70% ethanol extract of purple rice bran = 70% ethanol extract of red rice bran =
80% methanol extract = 80% aqueous methanol =
Water extract =
Syringic acid (µg/g)
—
80% methanol extract =
Water extract =
p-Coumaric acid (µg/g)
70% ethanol extract of light brown rice bran = 70% ethanol extract of purple rice bran = 70% ethanol extract of red rice bran =
