Objective: To explore the optimal purification process of the polysaccharides from sugarcane biogases. Method: To explore the optimum technology

we compared Savage method with TCA method for deproteinization and hydrogen peroxide solution method with active carbon method for decoloration. And four common macroporous absorption resins were compared for differences in adsorption and desorption performance. Then phenol-sulfuric acid method was used to determine the content of the polysaccharides from sugarcane biogases. Result: The optimum purification technological conditions were determined as following: deproteinization with savage method; discoloration with active carbon method; purification with macroporous absorption resins of MG-1 (the upper sample weight is 0.3 g; the column high is 35 cm and the flow rate is 10 mL/15 min). The polysaccharides of sugarcane biogases improved from 51.11% to 83.57%. Conclusion: This experiment provided a reference for the purification of polysaccharides from sugarcane biogases and provided an evidence for the further development of sugarcane biogases.