Purification, Preliminary Characterization, and Immunological Activity of Polysaccharides from Crude Drugs of Sijunzi Formula

Table 1

Characterizations of polysaccharides isolated from RS, BZ, FL, and GC.

	RS-3-1	RS-3-2	BZ-3-1	BZ-3-2	BZ-3-3	FL-3-1	GC-3-1
Total sugar (%)	91.1	91.5	91.8	94.1	97.0	96.0	97.1
Protein (%)	—	—	—	—	—	—	—
Uronic acid (%)	2.2	1.1	2.6	3.5	1.4	0.9	0.8
Molecular weight	5.6 × 10^4	5.4 × 10^4	5.7 × 10^4	5.6 × 10^4	5.5 × 10^4	5.6 × 10^4	5.4 × 10^4

—: not detected; RS: Radix Ginseng, Ren Shen; BZ: Rhizoma Atractylodis Macrocephalae, Bai Zhu; FL: Poria, Fu Ling; GC: Radix Glycyrrhizae, Gan Cao.