Characterization and Biological Activities of Polysaccharides from Dandelion (Taraxacum officinale) Leaves

Abstract

A dandelion leaf polysaccharide (DLP) with a sugar content of 46.53 ± 2.22% is isolated using ultrasonic‐assisted enzymatic extraction. The DLP contains two polysaccharide fractions with respective molecular weights (Mw) of 1900 and 22 800 g mol−1. Gas chromatography analysis reveals a composition of rhamnose, arabinose, mannose, galactose, and glucose. DLP displays excellent water holding and oil holding capacities, along with a moderate emulsifying activity and stability. Following simulated digestion in vitro, DLP can exist stably in the digestive system (saliva, gastric, and small intestine) without degradation. Furthermore, DLP possesses prebiotic properties and could be utilized as a carbon source.

Structural Characteristic and In-Vitro Anticancer Activities of Dandelion Leaf Polysaccharides from Pressurized Hot Water Extraction

“…As shown in Figure 1 A, DLP120 showed a narrowly dispersed symmetrical peak on HPLC. The Mw relative to dextran of DLP120 measured by HPLC was 1.64 × 10 6 Da (based on the calibration curve y = −0.3434x + 9.3478, R 2 = 0.9914), which differs significantly from previous reports about small-molecule polysaccharides [ 30 , 31 ]. As shown in Figure 1 B, UV full-wavelength scanning confirmed that the DLP120 contained seldom nucleic acids or proteins.…”