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Four novel heteropolysaccharides (HSP-I, HSP-II, HSP-III, HSP-IV) were isolated from blossoms of Hibiscus sabdariffa. Average molecular weights of the four polysaccharides were 8.7×103Da, 1.4×104Da, 4.4×104Da and 1.4×105Da, respectively. Glucuronic acid, rhamnose, mannose, glucose and galactose composed the main components of HSP-II at an approximate molar ratio of 1:9.89:4.64:1.99:7.65. (1→3)-linked...
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