Preparation of flavor enhanced rice bran oil via physical blending and
characterization of key flavor components
Abstract
Flavored oils are increasingly in demand in the market, whereas rice
bran oil (RBO) offers a plain sensory experience. The present study
introduced a novel method for preparing rice aroma RBO and explored its
flavor characteristics compared to the pressed and refined RBOs. Both
sensory and instrumental assessments identified rice aroma RBO as having
the most favorable flavor profile. Comprehensive analyses using
GC×GC-TOF-MS and GC-O techniques revealed that 14 key aroma compounds
predominantly contributed to the distinct flavor, closely mirroring the
characteristic volatiles found in aromatic rice. In particular,
2-acetyl-1-pyrroline (2-AP) and vanillin emerged as the predominant
flavor contributors. This research not only elucidates the aromatic
composition of rice aroma RBO but also holds significant implications
for future studies and industrial applications aimed at enhancing the
flavor of RBO.