Zhang B.-W., Xu J.-L., Zhang H., Zhang Q., Lu J. & Wang J.-H.
(2016):
Structure elucidation of a polysaccharide from Umbilicaria esculenta and its immunostimulatory activity,
PLoS ONE,
11(12): e0168472 [18 p.]
Umbilicaria esculenta has been used as a tonic food in China for several centuries owing to its pleasant flavor and health benefits. In this study, a water soluble polysaccharide, which we designated as UP2, with an average molecular weight of 3.33 × 105 Da, was isolated from U. esculenta cultivated in the Huangshan Mountain, by consecutive hot water extraction and anion-exchange chromatography. Gas chromatography analysis indicated that UP2 contained three kinds of monosaccharides, including mannose, …
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