(corresponding to a maximum of the broad
absorption band that oils exhibit in the CH combination band
region (4500–4100 cm1
)) relative to a single-point baseline at
504 L. Xu et al. / Food Chemistry 185 (2015) 503–508
3850 cm1 (Dong et al., 2015; Sun et al., 2014). Spectral data processing
and statistical analysis were carried out using TQ Analyst
7.2 (Thermo Electron Inc., Madison, WI) and OriginPro7.5
(Originlab, Northampton, MA).