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