Abstract
ABSTRACTHeadspace volatiles of Yihchuan aromatic rice, a japonica rice cultivar, were extracted by a solid‐phase microextraction (SPME) method and analyzed by GC and GC‐MS. Effects of fiber types and an industrial milling process on the change of headspace volatiles were studied. Of the fiber types, divinylbenzene/carboxen/polydimethylsiloxane (DVB/CAR/PDMS), polydimethylsiloxane/divinylbenzene (PDMS/DVB), and carboxen/polydimethylsiloxane (CAR/PDMS) were suggested for use in the analysis headspace volatiles in terms of absorption or adsorption ability. Regarding the milling effect, the amount of total headspace volatiles from brown rice to white rice decreased ≈30%, and that of aldehydes and alcohols, the two largest groups of volatiles, decreased ≈20 and 15%, respectively. Comparatively, rice bran contained higher amounts of total headspace volatiles than milled rice grains.
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