Analysis and stability test of the water extract and powder from Polygoni Multiflori radix for toxicity study

For toxicological evaluation, water extracts and powder from Polygoni Multiflori Radix were made and the component analysis was followed by the Korean Pharmacopoeia method. To verify the stability of the water extract and powder from Polygoni Multiflori Radix used for toxic testing, the stability test was examined after storage at room temperature and in the cold room for one year. Water extract and powder from Polygoni Multiflori Radix were found to be stable for one year. Therefore, the use of the specimen of Polygoni Multiflori Radix after preparation during the animal test turned out to be stable.