Table 2.

Absorption peaks of glucose in the MIR region and the corresponding functional groups.

No.	Wavelength (nm)	Functional Group
1	8000	C-H bending vibrations [70,71,72,73]
2	8244	[74]
3	8658	Pyranose ring [75,76]
4	8680	[77]
5	9290	C-H bending vibrations [70,71,72,73,74,77]
6	9551	C-H bending vibrations [70,71,72,73]
7	9680	ν(C–O–H) or ν(C–O–C) vibration [72,73,74,77,78]
8	9746	C–O–H bending vibration [70,72,73]