Table 4.

Positions of major IR stretching bands and their respective assignments for AA, ALG and GA.

Characteristic Group	Wavelength (cm−1)
	AA	ALG	GA
C—O stretch	1025	1030	1029
C—O—C stretch	1113	1338	–
C=C stretch	1658	–	–
C=O stretch	1750	1606	1604
C—H stretch	3350	2932	2910
O—H stretch	3523	3260	3333
C(=O)—O stretch	–	1411	1422
(1,4), (1,6) linkage of galactose and mannose	–	–	614