| 内容提要: |
Quercus wutaishanica Mayr is a kind of deciduous tree that belongs to Quercus, Fagales. They are mainly found in Shanxi, which are the main groups of forest vegetation in temperate zone and warm temperate zone. Oak is the general designation of the Quercus Cupuliferae plants except the chestnut shell. The content of tannin in acorn is high, about 10.2%~14.1%. And it has a variety of biological activities, such as antioxidant, antibacterial, anti-cancer, anti-aging, scavenging free radicals or blood fat and lowering blood pressure.
13 compounds [ethyl gallate (QLE-1), gallic acid (QLE-2), 3,3’,4-tri-O-methylellagicaci-d-4’-O-β-D-
galactopyranoside (QLE-4), daucosterol (QLE-5), Methyl gallate (QLE-6), ethyl brevifolincarboxylate (QLE-7), brevifolin (QLE-8) 7,7'-dioxodihydroguaiaretic acid (QLE-9), pinolesterol (QLE-10), Dihydrodesmo-guaiacyl alcohol (QLE-11), 8-(4-hydroxy-3-methoxy-phenyl)-6,7-bis-hydroxymethyl-3-
Methoxy-5,6,7,8-tetrahydro-naphthalen-e-2-ol (QLE-12), pentaleucyl glucose (QLE-13), decarboxy ellagic acid (QLE-14)] have been isolated from ethyl acetate extract. |