Page 108 - Demo

112 PROCEEDINGS OF INTERNATIONAL SCIENTIFIC CONFERENCE ON APPLIED BIOTECHNOLOGYan IC50 index of 55.8 ppm (ug/ml). The activity of the lighter oil fraction showed better efficiency with an IC50 index of 37.9 ug/ml. traditional herbal bath remedy using medicinal plants from the Red Dao ethnic group in Northwest Vietnam is a valuable part of the region%u2019s cultural and medical heritage. This method is widely known for its benefits in alleviating bone and joint pain, with particular relevance for postpartum women.2.2. Oil extractionFigure 1. Essential oil distillation systemThe Cinnamomum camphora wood sample (2.0 kg) was chopped, ground finely, and put into the essential oil distillation system (Figure 1). Ingredients are evenly distributed in 5L of distilled water and heated by an electric stove at 120oC. Camphor essential oil extract is created based on the principles of diffusion, osmosis, dissolution, and steam attraction of organic compounds in plant tissues. Then, the hot steam stream carrying the essential oil comes