玉米须多糖的理化性质和体外生物活性研究OACSTPCD

The polysaccharides were extracted from three varieties('Heijin 699','Jinyin 308',and'Xiawang')of corn silk by hot water extraction-alcohol sedimentation method,and the physicochemical properties and in vitro bioactivities of these polysaccharides were comparatively studied.The results showed that the contents of three polysaccharides('Heijin 699','Jinyin 308',and'Xiawang')were(32.57±0.12)mg/g,(96.39±0.76)mg/g and(27.48±0.63)mg/g,respectively.The results of the physicochemical properties showed that the three polysaccharides mainly consisted of arabinose,galactose and glucose,and had different molecular weight distributions.Fourier transform-infrared spectra analysis showed that three polysaccharides were acidic pyran polysaccharides with β-configuration.In vitro bioactivities results indicated that three polysaccharides possessed good antioxidant,hypoglycemic,and antitumor activities in a dose-dependent manner,among which polysaccharides in'Heijin 699'showed the best performance.In conclusion,three polysaccharides have good biological activities,which provide an experimental basis for their application in functional food,pharmaceuticals,and cosmetics.