Research Article
Isolation and Characterization of Pectic Polysaccharide Fraction from In Vitro Suspension Culture of Fumaria officinalis L.
Table 3
Characteristic infrared bands shown by various functional groups.
| Characteristic IR frequencies, cm−1 | Experimental IR frequency, cm−1 | Assignments |
| 3200–3490 | 3419 | (ОН); intramolecular H-bonds | 2933–2981 | 2937 | (CH)(CH2) | 1750–1745 | 1740 | (C = O) stretching vibration of alkyl ester | 1640–1600 | 1616 | COO− antisymmetric stretching vibration, polygalacturonic acid; (H2O) | 1400–1410 | 1419 | COO− symmetric stretching vibration | 1330–1320 | 1317 | Ring vibration | 1243 | 1244 | (C-O) | 1125–1162 | 1147 | (C-O-C), glycoside | 1100–1093 | 1101 | (C-O) ring | 1019–1014 | 1018 | (C-O), (C-C) (C2-C3, C2-O2, C1-O1 pectin) | 950–960 | 954 | C-O bending vibration | 975 | 975 | (OH) | 888 | 889 | α-D-Galp C1 | 833–832 | 832 | Ring vibration | 760 | 765 | α-D-Glcp C1 | 540 | 534 | Polygalacturonic acid | 441 | 441 | C-O-C torsion deformation in methyl polygalacturonate |
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