2 results about "Picrasma quassioides" patented technology

This invention belongs to the field of pharmaceutical technology and relates to eight glycoside compounds extracted and isolated from the dried leaves of *Picrasma quassioides* Benn, a plant belonging to the genus *Picrasma* in the family Simaroubaceae. The compounds were obtained using chromatographic methods including silica gel chromatography, HP20 column chromatography, ODS column chromatography, and HPLC. This invention also relates to the acetylcholinesterase inhibitory activity of compounds 1-8 and their pharmaceutical uses. The preparation method of this invention is simple, reproducible, and of high purity.

The present application belongs to the technical field of aquaculture, and discloses a compound synergist of neomycin sulfate as well as a preparation method and application thereof. The present application discloses, for the first time, the application of Wedelia prostrata extract, Gastrodia extract and Picrasma extract in inhibiting the growth of Vibrio in vitro and in preventing and treating the glass fry disease of South American white shrimp caused by Vibrio infection. Experimental verification shows that the Wedelia prostrata extract, Gastrodia extract and Picrasma extract have good effects in inhibiting the growth of Vibrio in vitro when used alone, in combination with each other or simultaneously. Meanwhile, in view of the treatment of Vibrio infection causing the glass fry disease, the above extracts are used in combination with neomycin sulfate, so as to overcome the objective problem of low or weak efficacy of neomycin sulfate at a recommended dose, and to simultaneously achieve the enhancement of the efficacy of neomycin sulfate after being used in combination with neomycin sulfate, and the reduction of the usage amount of neomycin sulfate.