Drying of herbal medicines and tea

Herbal medicine is part of human civilization. It has been used in China for nearly 5000 years. One of the oldest and most important documents is the Egyptian Ebers papyrus (ca. 1550 bc), which includes more than 700 prescriptions using natural products such as caraway, coriander, garlic, linseed, peppermint, gs, fennel, anise, poppy, and castor oil [1]. Shen Nong’s Materia Medica was compiled by ancient Chinese in about 200 bc, which described the properties and usages of 365 types of Chinese medicines in three categories. In ancient Greece there was a guild of rhizomatists or root collectors, who gathered, prepared, and sold medicinal plants. The Greek botanist and physician, Dioscorides (ad 40-90), compiled the rst systematic description of 579 plants and their 4700 medicinal uses and modes of action. His work titled De Materia Medica was of central importance to European medicine until the seventeenth century [1]. Ayurveda is the principal traditional medical system of India, Pakistan, Nepal, and Sri Lanka, which has also influenced medicine in Tibet, Burma, and Malaysia. chapter 31-14 pages.