Research Article
The Application of FTIR Spectroscopy and Chemometrics for the Authentication Analysis of Horse Milk
Table 2
IR absorption of common bands detected in milk.
| | Region | Wavenumber | Functional group |
| | Water | 3320 cm-1 | -OH stretching vibrations | | Fatty acid | 2922 cm-1 | -CH2 asymmetric stretching | | 2852 cm-1 | -CH2 symmetric stretching | | 1742 cm-1 | C=O from an ester of triacylglycerol | | 1462 cm-1 | CH2-CH3 bending vibrations | | Protein | 1635 cm-1 | C=O stretching vibrations
N-H bending vibrations | | Lactose | 1077 cm-1 | C-O stretching vibrations |
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