The purpose of this research is to study the physico chemical properties of oil produced from hydrodistillation of massoi bark. The distillation period were varied from 12 to 18, 2 4, 30, and 30 and 36 hours,The result indicates that distillation r appears to have highly significant , affect on oil yield and acid number as shown by linear regresison of respectively Y = 2.132 + 0. 350 X (r = 0. 943) for oil yield and Y = 3.598 + 0.219 X (r = 0.977) for acid number. Besides that massoi bark oil from Maluku has higher eugenol content composed with that from lriqn and West Australia.
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