Catechin (C) is a white to brown crystalline powder, discoloration in the air. Density 1.54g /cm3. The melting point of about 200 ° C (decomposition). Dissolved in 50 parts of water; soluble in alcohol, ether. Leaves, Ilex plant holly (Ilex chi-nensis Sims) of leaves and other plants exist in the scales beginning of fern plants black fern Stenoloma chusanum (L.) Ching]. Catechin (C) has an antibacterial effect in vitro tests have varying degrees of inhibitory effect of Pseudomonas aeruginosa, Escherichia coli, Salmonella typhi, Shigella, Alcaligenes and Bacillus subtilis and Staphylococcus aureus. Also expectorant, anti-asthmatic effect. For the treatment of chronic bronchitis.
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