Abstract: The present invention provides a method of extracting flavonoid from C. morifolium. First, a dried plant material derived from C. morifolium is provided. The dried plant material can include only the leaves and the stems, or can include the stems, the leaves and the flowers. Next, an extraction step is performed with an extractant to obtain an extraction solid and an extraction liquid, wherein the extraction liquid comprises a flavonoid compound with a concentration of 8˜22 mg/g of the dried plant material. The present invention further provides a method of manufacturing a medicine composition with effect of alleviating dry eye syndrome.

Abstract: The present invention provides a method for controlling toxicity of metallic particles and a low-toxicity composite of metallic nanoparticles and inorganic clay. The metallic nanoparticles are effective in preventing infection and in skinning over, and thus suitable for treating scalds/burns. In the composite, the weight ratio of metallic nanoparticles to inorganic clay preferably ranges 0.1/99.9 to 6.0/94.0 in a size of about 5 to 100 nm. Preferably, the metal is silver and the inorganic clay is nano silicate platelets.

Abstract: The present invention provides a method for controlling toxicity of metallic particles and a low-toxicity composite of metallic nanoparticles and inorganic clay. The metallic nanoparticles are effective in preventing infection and in skinning over, and thus suitable for treating scalds/burns. In the composite, the weight ratio of metallic nanoparticles to inorganic clay preferably ranges 0.1/99.9 to 6.0/94.0 in a size of about 5 to 100 nm. Preferably, the metal is silver and the inorganic clay is nano silicate platelets.