Table 5 Characteristic IR wave numbers of commercial gum and extracted natural gum from Aegle marmelous fruits.
Characteristic group | Wavenumber (cm− 1 ) | Intensity | Characteristic group | Wavenumber (cm− 1 ) | Intensity |
|---|---|---|---|---|---|
Commercial gum | Extracted natural gum | ||||
O-H stretching vibration | 3341.07 | 32.7239 | OH- stretching | 3771.12 | 94.967 |
C-H stretching of the CH2 group | 2986.23 | 14.4815 | C-H stretching | 2917.77 | 74.8812 |
Symmetrical CH2 group | 1612.2 | 19.0558 | C = O | 1991.14 | 95.301 |
C-OH primary alcoholic | 1137.8 | 38.8073 | C-O | 1547.59 | 95.0061 |
CH2OH stretching mode | 1053.91 | 24.087 | C-C deformation | 1407.78 | 93.0202 |
-CH2 twisting vibration | 1024.02 | 26.397 | 2nd OH | 1016.3 | 77.5668 |
