3.1.2 Physicochemistry Analysis
The total carbohydrate and uronic acid contents of GP were 82.3% and
10.2%, respectively. After Sevage reagent treatment, the protein
content of GP decreased from 23.1 to 7.1%. The sugar components were
analyzed by converting the sugars into PMP derivatives. HPLC results
showed that GP was composed of galacturonic acid (GalA), glucose (Glc),
galactose (Gal), and arabinose (Ara) in a molar ratio of 1.6 to 5.1 to
1.0 to 1.6, respectively (Fig. 1B).