Table 3.

General parameters and monosaccharide compositions of water soluble polysaccharide fractions of bitter gentian teas.

Parameter	G. algida	G. decumbens	G. macrophylla	G. triflora
Yield, mg/g	19.34	6.27	22.18	15.31
Total carbohydrate content, mg/g	946.14 ± 24.59	931.63 ± 24.15	932.07 ± 22.37	954.91 ± 24.83
Uronic acid content, mg/g	802.37 ± 20.86	732.64 ± 18.31	824.63 ± 22.26	797.68 ± 20.74
Protein content, mg/g	16.27 ± 0.41	22.86 ± 0.48	21.15 ± 0.51	18.37 ± 0.38
${\alpha }_{\mathrm{D}}^{40}$, °	+116	+101	+124	+110
Reaction with I2	negative	negative	negative	negative
Reaction with resorcinol	negative	negative	negative	negative
Reaction with Yariv reagent	positive	positive	positive	positive
Monosaccharide composition, mol %
Ara	9.4	8.0	4.2	10.6
Gal	8.4	12.9	7.3	7.7
Glc	2.7	7.4	1.8	1.6
Man	0.9	2.1	1.2	1.1
Rha	5.6	4.8	6.3	2.8
Xyl	1.4	0.9	0.8	1.1
GalA	71.6	63.9	78.4	75.1
GlcA	tr.	tr.	tr.	tr.

tr.—traces amounts (<limit of quantification).