Plant mucilages. XLIII. A representative mucilage with biological activity from the leaves of Hibiscus rosa-sinensis.
A representative mucilage, called Hibiscus-mucilage RL, was isolated from the leaves of Hibiscus rosa-sinensis L. It was homogeneous on electrophoresis, and its molecular mass was estimated to be roughly 1.0 x 10(7). Its intrinsic viscosity value in aqueous solution was 23.2. The major constituent is an acidic polysaccharide composed of L-rhamnose: D-galactose: D-galacturonic acid: D-glucuronic acid in the molar ratio of 5:8:3:2. Methylation analysis, partial hydrolysis and nuclear magnetic resonance studies indicated its main structural features including a unique backbone chain composed of alpha-1,4-linked D-galactosyl alpha-1,2-linked L-rhamnosyl alpha-1,4-linked D-galacturonic acid units. The mucilage showed considerable anti-complementary activity.
Shimizu
N
N
Kyoritsu College of Pharmacy, Tokyo, Japan.
Tomoda
M
M
Suzuki
I
I
Takada
K
K
D000469:Alkaline Phosphatase / Q000037:antagonists & inhibitors; D002851:Chromatography, High Pressure Liquid; D003169:Complement Inactivator Proteins / Q000737:chemistry*; D004591:Electrophoresis, Polyacrylamide Gel; D006868:Hydrolysis; D009682:Magnetic Resonance Spectroscopy; D008745:Methylation; D009844:Oligosaccharides / Q000737:chemistry / Q000302:isolation & purification; D010936:Plant Extracts / Q000494:pharmacology; D010946:Plants, Medicinal / Q000737:chemistry*
D003169:Complement Inactivator Proteins; D009844:Oligosaccharides; D010936:Plant Extracts; D000469:Alkaline Phosphatase