The oil extraction of Calophyllum seeds using a conventional single screw press leads to an inferior yield and is perceived to be less efficient as well as difficult to operate. An innovative and flexible single screw press was, therefore, designed and investigated in this study to solve these problems. Moreover, the effects of the seeds’ moisture content, pressing temperature and seeds’ feed rate on the oil yield and quality were identified to determine the optimal oil extraction performance from the Calophyllum seeds. The study found that the seeds’ moisture content, pressing temperature and seeds’ feed rate generally affected the oil yield. The yield indeed improved as the pressing temperature and the seeds’ feed rate increased respectively from 45 to 75°C and 1.5 to 5 kg·h–1. The oil yield also ameliorated as the seeds’ moisture content rose from 1.7 to 12.8%, but it was optimal when the seeds’ moisture content was 5.5%. The best oil yield of 80.6% was, thus, obtained with the seeds’ moisture content of 5.5%, a pressing temperature of 75°C and the seeds’ feed rate of 5 kg per h. Although the quality of the crude oil was poor with a high viscosity (³ 94 mm2·s–1) and high acid value (³ 48 mg KOH/g), its density, saponification and iodine values were acceptable. After the oil refining process by degumming and neutralisation, its quality improved and met the Indonesian Biofuel Standards, except for its viscosity.
Amalia Kartika I., Fathiyah S., Desrial, Purwanto Y.A. (2010): Refining of calophyllum oil and its application as biofuel. Jurnal Teknologi Industri Pertanian, 20: 122–129.
Amalia Kartika I., Pontalier P.Y., Rigal L. (2010): Twin-screw extruder for oil processing of sunflower seeds: Thermo-mechanical pressing and solvent extraction in a single step. Industrial Crops and Products, 32: 297–304. https://doi.org/10.1016/j.indcrop.2010.05.005
Amalia Kartika I., Evon P., Cerny M., Suparno O., Hermwan D., Ariono D., Rigal L. (2016): Simultaneous solvent extraction and transesterification of jatropha oil for biodiesel production, and potential application of the obtained cakes for binderless particleboard. Fuel, 181: 870–877. https://doi.org/10.1016/j.fuel.2016.05.038
Amalia Kartika I., Cerny M., Vandenbossche V., Rigal L., Sablayrolles C., Vialle C, Suparno O., Ariono D., Evon Ph. (2018): Direct Calophyllum oil extraction and resin separation with a binary solvent of n-hexane and methanol mixture. Fuel, 221: 159-164. https://doi.org/10.1016/j.fuel.2018.02.080
Atabani A.E., Anjum B.I., Mahlia T.M.I, Masjuki H.H., Chong W.T., Lee K.T. (2013): Investigation of physical and chemical properties of potential edible and non-edible feedstock for biodiesel production. Renewable and Sustainable Energy Reviews, 21: 749–755. https://doi.org/10.1016/j.rser.2013.01.027
Bhuiya M.M.K., Rasul M.G., Khan M.M.K., Ashwath N., Azad A.K., Mofijur M. (2015): Optimisation of oil extraction process from Australian native beauty leaf seed (Calophyllum inophyllum). Energy Procedia, 75: 56–61. https://doi.org/10.1016/j.egypro.2015.07.137
Boucher C. (2000): Calophyllum oil extracted at ambient temperature has UV protecting, antiradical, antioxidant, antiaging and therapeutic properties. FR9907772A.
Dufaure C., Leyris J., Rigal L., Mouloungui Z. (1999): A twin-screw extruder for oil extraction: I. direct expression of oleic sunflower seeds. Journal of the American Oil Chemists' Society, 76: 1073–1079. https://doi.org/10.1007/s11746-999-0206-0
Dweck A.C., Meadows T. (2002): Tamanu (Calophyllum inophyllum) –The African, Asian, Polynesian and Pacific panacea. International Journal of Cosmetic Science, 24: 1–8. https://doi.org/10.1046/j.1467-2494.2002.00160.x
Evon Ph., Amalia Kartika I., Cerny M., Rigal L. (2013): Extraction of oil from jatropha seeds using a twin-screw extruder: feasibility study. Industrial Crops and Products, 47: 33–42. https://doi.org/10.1016/j.indcrop.2013.02.034
Fadhlullah M., Widiyanto S.N.B., Elvi Restiawaty E. (2015): The potential of nyamplung (Calophyllum inophyllum L.) seed oil as biodiesel feedstock: effect of seed moisture content and particle size on oil yield. Energy Procedia, 68: 177–185. https://doi.org/10.1016/j.egypro.2015.03.246
Heriawan, Indartono Y.S., Kartika I.A. (2018): Optimization of mechanical oil extraction process of Nyamplung seeds (Calophyllum inophyllum L.) by flexible single screw extruder. AIP Conference Proceedings, 1984: 1–10
Jahirul M.I., Brown R.J., Senadeera W., Ashwath N., Laing C., Leski-Taylor J., Rasul M.G. (2013): Optimisation of bio-oil extraction process from beauty leaf (Calophyllum inophyllum) oil seed as a second generation biodiesel source. Procedia Engineering, 56: 619–624. https://doi.org/10.1016/j.proeng.2013.03.168
Jain M., Chandrakant U., Orsat V., Raghavan V. (2018): A review on assessment of biodiesel production methodologies from Calophyllum inophyllum seed oil. Industrial Crops and Products, 114: 28–44. https://doi.org/10.1016/j.indcrop.2018.01.051
Kanda H., Li P., Yoshimura T., Okuda S. (2013): Wet extraction of hydrocarbons from Botryococcus braunii by dimethyl ether as compared with dry extraction by hexane. Fuel, 105: 535–539. https://doi.org/10.1016/j.fuel.2012.08.032
Kartika I.A., Pontalier P.Y., Rigal L. (2005): Oil extraction of oleic sunflower seeds by twin screw extruder: influence of screw configuration and operating conditions. Industrial Crops and Products, 22: 207–222. https://doi.org/10.1016/j.indcrop.2005.01.001
Kartika I.A., Pontalier P.Y., Rigal L. (2006): Extraction of sunflower oil by twin screw extruder: screw configuration and operating condition effects. Bioresource Technology, 97: 2302–2310. https://doi.org/10.1016/j.biortech.2005.10.034
Leksono B., Hendrati R.L., Windyarini E., Trimaria Hasnah T. (2014): Variation in biofuel potential of twelve Calophyllum inophyllum populations in Indonesia. Indonesian Journal of Forestry Research, 1: 127–138. https://doi.org/10.20886/ijfr.2014.1.2.127-138
Orhevba B.A., Chukwu O., Osunde Z.D., Ogwuagwu V. (2013): Influence of moisture content on the yield of mechanically expressed neem seed kernel oil. Natural and Applied Sciences, 4: 252–257.
Udoh J., Olayanju T., Dairo O., Alonge A. (2017): Effect of moisture content on the mechanical and oil properties of soursop seeds. Chemical Engineering Transactions, 58: 361–366.
Uitterhaegen E., Evon Ph. (2017): Twin-screw extrusion technology for vegetable oil extraction: a review. Journal of Food Engineering, 212: 190–200. https://doi.org/10.1016/j.jfoodeng.2017.06.006