Rossi, EvyAyu, Dewi FortunaMuslim2014-01-272014-01-272014-01-27978-979-8389-18-4wahyu sari yenihttps://repository.unri.ac.id/xmlui/handle/123456789/5328Rubber plant (Havea brasiliensis) produce natural latex. By product of this plant was rubber seed that having nutritive value. Now days some farmers used this seed in poultry diet as animal feedstuffs. Because of its nutrient content, rubber seed had a great potential to be as economically materials for food, feed or material for industry. The purpose of this research was to obtain the best treatment of smoking time on rendement and chemical properties of rubber seed oil that could be used as edible oil. This research was conducted by using the Complete Random Block Design consists of 4 treatments with 3 replications as a blocks. The treatments were duration of smoking, respectively 12, 16, 20 and 24 hours. The data obtained then be analyzed statistically by using ANOVA. The Results of study showed that duration of smoking a real effect (P <0.05) on rendement and water content of rubber seed oil yield, whereas treatment did not affect significantly (P> 0.05) on the peroxide number, iodine number, acid number, density, color and aroma of oil. Based on the results it can be concluded that the duration of smoking for12 to 24 hours make the quality of rubber seed oil was that oil not feasible as the cooking oil.enRubber Seed OilsmokingyieldPeroxide and iodine numberUR-Scientific Work Lecturer