Thus, current rice milling technology produces rice bran from different layers of the kernel caryopsis. The phytochemical contents of each of these fractions can vary widely, the ¦Ã-oryzanol concentration being higher in the outer bran layers ( Lloyd et al., 2000 ).
What is rice bran oil?
1. Introduction Among edible oils, rice bran oil (RBO, 20¨C25 wt% in rice bran) is a unique rich source of commercially-important bioactive phytochemicals, most of them of interest in nutrition, pharmacy and cosmetics ( Da Silva et al., 2005, Danielski et al., 2005 ).
Is -oryzanol a value-added co-product of rice bran processing?
¦Ã-Oryzanol is an important value-added co-product of rice bran processing. Therefore, research to improve the recovery of ¦Ã-oryzanol and other phytochemicals, in order to obtain fractions enriched in a particular compound or group of compounds, has been conducted.
Why is rice bran fractionation better than All-Bran processing?
The phytochemical contents of rice bran layers vary widely, the ¦Ã-oryzanol concentration being higher in the outer layers ( Lloyd et al., 2000, Rohrer and Siebenmorgen, 2004 ). Thus, rice bran fractionation rather than all-bran processing is advantageous because smaller amounts of richer fractions are processed ( Schramm et al., 2007 ).