PENGARUH SUHU PEMANASAN AWAL DAN TEKANAN TERHADAP PEROLEHAN MINYAK BIJI PEPAYA (CARICA PAPAYA L.) DENGAN MENGGUNAKAN METODE PENGEPRESAN Effect Of Preheating Temperature and Pressure on Papaya (Carica Papaya L) seed’s oil using press hidraulic

Abstract

One of the energy that can be processed into fuel is plant papaya seeds. Seeds of papaya ( Carica papaya L. ) is a vegetable oil that has great potential to be used as raw material for biodiesel . This is because the papaya seed oil contains 72%-78 % oleat acid, 12%-14% palmitic acid, 4%-5% stearate acid ,and 2,5%-3,5% acid linoleate. Extraction proccess of papaya seed’s oil using a hydraulic press with pre-treatment consists of the sorting process and heating proccess with variable of preheating temperature are 40oC, 50oC,60o C and the variable of pressure are 150 kg / cm2, 175 kg / cm2, 200 kg / cm2. Based on observations in on a heating temperature of 60⁰C with a pressure of 200 kg / cm2 obtained the highest oil yield percentage is on by 15,50 % with a content of 1,92% moisture content, density obtained for 0,641gr / ml, viscosity obtained by the 27.664 Cp, And has a sour figure of 15,15 mgKOH / g and a saponification number of 156,82 mgKOH/g. Keywords: Papaya’s Seeds, Papaya’s Oil, Hydraulic Press, Temperature, Pressure.