Figure 4. AFM height images of molecular structure of the puerh tea polysaccharide fractions: PTPS-1 (A), PTPS-2 (B)

From

Purification, Physicochemical Characterization, and Bioactivities of Polysaccharides from Puerh Tea

Limin Mao, Shuhong Shao, Shili Sun, Yuefei Wang, Ping Xu, Liewei Cai

Journal of Food and Nutrition Research. 2014, 2(12), 1007-1014 doi:10.12691/jfnr-2-12-23