Abstract：
:Rice bran chemical profiles differ across rice varieties and have not yet been analysed for differential chemopreventive bioactivity. A diverse panel of seven rice bran varieties was analysed for growth inhibition of human colorectal cancer (CRC) cells. Inhibition varied from 0% to 99%, depending on the variety of bran used. Across varieties, total lipid content ranged 5-16%, individual fatty acids had 1.4- to 1.9-fold differences, vitamin E isoforms (α-, γ-, δ-tocotrienols, and tocopherols) showed 1.3- to 15.2-fold differences, and differences in γ-oryzanol and total phenolics ranged between 100-275ng/mg and 57-146ngGAE/mg, respectively. Spearman correlation analysis was used to identify bioactive compounds implicated in CRC cell growth inhibitory activity. Total phenolics and γ-tocotrienol were positively correlated with reduced CRC cell growth (p<0.05). Stoichiometric variation in rice bran components and differential effects on CRC viability merit further evaluation elucidate their role in dietary CRC chemoprevention.
journal_name
Food Chemjournal_title
Food chemistryauthors
Forster GM,Raina K,Kumar A,Kumar S,Agarwal R,Chen MH,Bauer JE,McClung AM,Ryan EPdoi
10.1016/j.foodchem.2013.04.020subject
Has Abstractpub_date
2013-11-15 00:00:00pages
1545-52issue
2eissn
0308-8146issn
1873-7072pii
S0308-8146(13)00466-4journal_volume
141pub_type
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