Journal of Spectroscopy / 2017 / Article / Tab 2

Research Article

Rancidity Estimation of Perilla Seed Oil by Using Near-Infrared Spectroscopy and Multivariate Analysis Techniques

Table 2

Locations of function groups and corresponding vibration modes in the near-infrared region.

Wavelength (nm)Vibration modeStructure

900C–H str. third overtoneCH3
1195C–H str. second overtoneCH3
1215C–H str. second overtoneCH3
13952C–H str. + 2C–H def.CH3
1410O–H str. first overtoneROH

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