Research Article
Inhibition of Calcium Oxalate Formation and Antioxidant Activity of Carboxymethylated Poria cocos Polysaccharides
Table 4
Carboxymethylation conditions of PCP-Cs and carboxyl content of polysaccharides.
| | Polysaccharide type | Isopropanol volume (mL) | NaOH volume (mL) | Chloroacetic acid amount (g) | Reaction time (h) | Temperature | COOH content (%) |
| | PCP-C0 | — | — | — | — | | 2.54 | | PCP-C1 | 15 | 10 | 2.63 | 2 | 60 | 6.13 | | PCP-C2 | 15 | 10 | 2.63 | 8 | 60 | 10.24 | | PCP-C3 | 10 | 15 | 6.00 | 4 | 60 | 16.22 |
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