Table 4.
FTIR spectrum of bonds in the aqueous extract for P. oleracea.
| NO. of peak | Band position (cm−1) | bond and functional group |
|---|---|---|
| 1 | 3912 | O–H stretching of Water; N–H stretching of protein amide A |
| 2,5 | 3897.84:3657.34 | O–H stretch, free hydroxyl alcohols, phenols |
| 6,7,8 | 3697.84:3685.3 | Free OH sharp |
| 9 | 3429.78 | N–H stretch (1°, 2° amines, amides) O–H alcohol |
| 10 | 2925 | C–H stretchalkanes methyl and methylene groups |
| 11 | 2075 | C ≡ C Alkynes |
| 12,13,14 | 1879.29:1855.19 | C=O Aldehydes C=O stretch non conjugated Acid halid |
| 15 | 1625.7 | –C=C– stretch alkenes Aromatic C=C stretching N–H bend 1° amines |
| 16 | 1508 | N–O stretching nitro compound |
| 17 | 1406.82 | O–H bending carboxylic acids |
| 18 | 1319.07 | O–H bending phenol |
| 19 | 1271.82 | C–O stretching Alkyi, Aryl ether |
| 20 | 1044.26 | S=O stretching sulfoxide |
| 21 | 581.433 | C–Cl stretch halocompound |
| 22 | 535.15 | C–I stretch halocompound |
| 23 | 451.261 | C–Br stretch alkyl halides |