Atomic Force Microscope Observation of Gynostemma pentaphyllum Polysaccharide GPP Ⅲ -a
LIU Rong-hua，YANG Xiao-fan，CHI Ai-ping*
FOOD SCIENCE . 2009, (17): 76 -78 .  DOI: 10.7506/spkx1002-6630-200917016