background: mushrooms have been valued as high tasty nutritional and nutraceutical food throughout the world. at present 270 species of mushrooms are known to have various nutritional and therapeutic properties. polysaccharides are the primary content of mushrooms that are used for their pharmaceutical properties as immunostimulators. objectives: here, mushrooms were screened for useful polysac...

mastic (chatlanqosh or turpentine) is a valuable tree species in most parts of the country, particularly around the southern slopes of the alborz and zagros mountain range distributed. wild mastic tree is mainly due to the adaptability and hard rocky ground tree and needless to excessive irrigation, it doesn't usually crop. it is the mountain range of the plant, giving it less water. the soil a...

I am a chemist as well as a college president, and in thinking about the goals of higher education I often return to two general methods that intertwine through the study of chemistry: analysis and synthesis. In analysis, chemists may take a complex mixture and break it down into separate substances through chromatography, or take a single substance and use spectroscopy to find its atomic struc...

Two new polyynes, named oplopantriol A (5) and oplopantriol B (6), were isolated from the root bark of Oplopanax horridus (Smith) Miq, an ethnic medicinal plant of North America, along with four known polyynes: (3S,8S)-falcarindiol (1), oplopandiol (2), (11S,16S,9Z)-9,17-octadecadiene-12,14-diyne-1,11,16-triol, 1-acetate (3) and oplopandiol acetate (4). The structures of the new compounds were ...

The current approaches to the quality control of herbal medicines are either compound-oriented or pattern-oriented, the former targeting specific components with some known chemical properties and the latter targeting all detectable components. The marker approach uses specific chemical compounds with known molecular structures, while the multi-compound approach uses both chemical compounds wit...

milk thistle (silybum marianum (l.) gaertn.) is one of the valuable medicinal plants which used in the treatment of liver disorders. the major active constituents in this plant are flavonolignans, collectively known as silymarin which is a mixture of three isomer silybin, silydianin and silycristin. its therapeutic properties are due to the presence of silymarin. the seeds contain the highest a...