Method for preparing extract of shoulder pole tegument and antineoplastic use of the same

The invention discloses a preparation method of an extract of grewia biloba bark and an anti-tumor use of the extract, comprising the steps as follows: drying the grewia biloba root bark or stem bark after cleaning and air drying, grinding to powder, heating reflux extraction 1-3 times of the powder with 0% to 100% ethanol solution, combining the extract together, concentrating, drying, then obtaining the extract. The invention has an advantage that the distinctive anti-tumor effect of the extract of grewia biloba bark is proven by a plurality of experiments.

Chemical heat exchanger with porous tube plate

The invention belongs to the field of chemical heat exchangers, particularly relates to a chemical heat exchanger provided with a porous tube plate, and aims to solve the problems that an existing heat exchanger is in a static heat exchange state, and a liquid raw material and heat exchange liquid cannot be subjected to heat exchange sufficiently and uniformly, the chemical heat exchanger comprises a shell, a shell cover is fixedly mounted on one side of the shell, and an inlet is formed in the shell cover; a discharge port is formed in the shell, a first circular plate and a second circular plate are fixedly installed in the shell, a plurality of flow dividing holes are formed in the first circular plate, a plurality of heat exchange pipes are rotatably installed on the second circular plate, one end of each heat exchange pipe communicates with the corresponding flow dividing hole, and a plurality of stirring blocks are fixedly installed on the outer side of each heat exchange pipe. According ...

Method for preparing extract of shoulder pole tegument and antineoplastic use of the same

The invention discloses a preparation method of an extract of grewia bark and an anti-tumor use of the extract, comprising the steps as follows: drying the grewia root bark or stem bark after cleaning and air drying, grinding to powder, heating reflux extraction 1-3 times of the powder with 0% to 100% ethanol solution, combining the extract together, concentrating, drying, then obtaining the extract. The invention is characterized in the distinct anti-tumor effect of the extract of grewia bark is proved by a plurality of experiments.

Method of preparing methylselenocysteine from alpha-amino acrylic acid derivative