Compressive loading experiment of non-roasted bulk oil palm kernels at varying pressing factors

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Compression testing of non-roasted bulk oil palm kernels at different processing factors was performed using a universal compression testing machine and a pressing vessel witha plunger. The purpose of the research was to describe regression models of deformation, deformation energy and percentage kernel oil depending on force, speed and vessel diameter. The tested compression forces were 100, 125, 150, 175 and 200 kN, while the speeds were 5, 10, 15, 20 and 25 mm min−1. Three pressing vessels of diameter 60, 80 and 100 mm were used. Samples were compressed at an initial height of 60 mm. For varying forces and vessel diameters at a constant speed of 5 mm min−1, the values of deformation, deformation energy and percentage kernel oil ranged from 28.47±0.89 to 37.45±0.11 mm, 796±0.82 to 1795±49.01 J and 7.33±0.26 to 25.67±0.39%. At a constant force of 200 kN for different speeds and vessel diameters; the aforementioned determined parameters also ranged from 31.91±1.61 to 37.63±1.21 mm, 1012±26.76 to 1795±49.01 J and 14.66±0.42 to 24.98±1.37%. The results were statistically significant (p<0.05) or (F-ratio>F-critical), with high coefficients of determination between 0.74 and 0.99. Thus, higher force at specific speed may be needed to maximally recover kernel oil.

Akinoso R. and Raji A.O., 2011. Physical properties of fruit, nut and kernel of oil palm. Int. Agrophys., 25, 85-88.

Akinoso R., Raji A.O., and Igbeka J.C., 2009. Effects of compressive stress, feeding rate and speed on palm kernel oil yield. J. Food Eng., 93, 427-430.

Aripin N.F.K., Park J.W., and Park H.J., 2012. Preparation of vesicle drug carrier from palm-oil and kernel oil-basedglycosides. Colloids and Surfaces B: Biointerfaces. 95, 144-153.

Beerens P., 2007. Screw-pressing of Jatropha seeds for fuelling purposes in less developed countries. MSc. Thesis, Depart-ment of Sustainable Energy Technology, Eindhoven University of Technology, The Netherlands.

Blahovec J., 2008. Agromaterials Study Guide. Czech University of Life Sciences Prague, Prague, Czech Republic.

Chakespari A.G., Rajabipour A., and Mobli H., 2010. Strength behaviour study of apples (cv. Shaft Abadi and Golab Kohanz) under compression loading. Modern Appl. Sci., 4(7), 173-182.

Deli S., Farah Masturah M., TajuL Aris Y., and Wan Nadiah W.A., 2011. The effects of physical parameters of the screw press oil expeller on oil yield from Nigella sativa L. seeds. J. Int. Food Res., 18(4), 1367-1373.

Demirel C., Kabutey A., Herak D., and Gurdil G.A.K. 2017. Numerical estimation of deformation energy of selected bulk oilseeds in compression loading. IOP Conf. Series: Materials Sci. Eng., 237(1), 1-5.

Divišová M., Herák D., Kabutey A., Sigalingging R., and Svatoňová T., 2014. Deformation curve characteristics of rapeseeds and sunflower seeds under compression loading. Scientia Agriculturae Bohemica, 45(3), 180-186.

Galedar M.N., Mohtasebi S.S., Tabatabaeefar A., Jafari A., and Fadaei H., 2009. Mechanical behaviour of pistachio nut and its kernel under compression loading. J. Food Eng., 95, 499-504.

Gupta R.K. and Das S.K., 2000. Fracture resistance of sunflower seed and kernel to compressive loading. Food Eng., 46, 1-8.

Herak D., Gurdil G., Sedlacek A., Dajbych O., and Simanjuntak S., 2010. Energy demands for pressing Jatropha curcas L. seeds. Biosystems Eng., 106, 527-534.

Herák D., Kabutey A., Divišová M., and Simanjuntak S., 2013. Mathematical model of mechanical behaviour of Jatropha curcas L. seeds under compression loading. Biosystems Eng., 114(3), 279-288.

Herak D., Kabutey A., Sedláček A., and Gurdil G., 2012. Mechanical behaviour of several layers of selected plant seeds under compression loading. Res. Agric. Eng., 58, 24-29.

ISI, 1966. Indian standard methods for analysis of oilseeds, IS: 3579. New Delhi, Indian Standard Institute.

Kabutey A., Herák D., Chotěborský R., Dajbych O., Divišova M., and Boatri W.E., 2013. Linear pressing analysis of Jatropha curcas L. bulk seeds using different pressing vessel diameters and seed pressing heights. Biosys. Eng., 115, 43-49.

Kabutey A., Herák D., Chotěborský R., Sigalingging R., and Mizera Č., 2015. Effect of compression speed on energy requirement and oil yield of Jatropha curcas L. bulk seeds under linear compression. Biosys. Eng., 136, 8-13.

Kabutey A., Herák D., Dajbych O., Divišová M., Boatri W.E., and Sigalingging R., 2014. Deformation energy of Jatropha curcas L. seeds under compression loading. Res. Agric. Eng., 60, 68-74.

Karaj S. and Muller J., 2010. Determination of physical, mechanical and chemical properties of seeds and kernels of Jatropha curcas L. Industrial Crops and Products, 32, 129-138.

Karaj S. and Muller J., 2011. Optimizing mechanical oil extraction of Jatropha curcas L. seeds with respect to press capacity, oil recovery and energy efficiency. Industrial Crops and Products, 34, 1010-1016.

Łysiak G., 2007. Fracture toughness of pea: Weibull analysis.J. Food Eng., 83, 436-443.

Munson-Mcgee S.H., 2014. D-optimal experimental designs for uniaxial expression. J. Food Process Eng., 37, 248-256.

Ozumba I.C. and Obiakor S.I., 2011. Fracture resistance of palm kernel seed to compressive loading. J. Stored Products Postharvest Res., 2(13), 248-253.

Raji A.O. and Favier J.F., 2004. Model for the deformation in agricultural and food particulate materials under bulk compressive loading using discrete element method II: theory, compression of oilseeds. J. Food Eng., 64(3), 373-380.

Sigalingging R., Herák D., Kabutey A., Čestmír M., and Divišová M., 2014. Tangent curve function description of mechanical behaviour of bulk oilseeds: A review. Scientia Agriculturae Bohemica, 45(4), 259-264.

Sigalingging R., Herák D., Kabutey A., Dajbych O., Hrabě P., and Mizera Č., 2015. Application of a tangent curve mathematical model for analysis of the mechanical behaviour of sunflower bulk seeds. Int. Agrophys., 29, 517-524.

Sirisomboon P., Kitchaiya P., Pholpho T., and Mahuttanya-vanitch T., 2007. Physical and mechanical properties of Jatropha curcas L. fruits, nuts and kernels. Biosys. Eng., 97(2), 201-207.

Statsoft, 2013. Inc. Tulsa, OK74104, USA.

Stroshine R., 1998. Physical properties of agricultural materials and food products. Department of Agricultural and Biological Engineering, Pardue University, West Lafayette, IN, USA.

Tunde-Akintunde T.Y., Akintunde B.O., and Igbeka J.C., 2001. Effects of processing factors on yield and quality of mechanically expressed soybean oil. J. Eng. Technol., 1, 39-45.

Willems P., Kuipers N.J.M., and De Haan A.B., 2008. Hydraulic pressing of oilseeds: experimental determination and modeling of yield and pressing rates. J. Food Eng., 89, 8-16.

Willems P., Kuipers N.J.M., and De Haan A.B., 2009. A consolidation based extruder model to explore GAME process configurations. J. Food Eng., 90, 238-245.

Zheng Y., Wiesenborn D.P., Tostenson K., and Kangas N., 2003. Screw pressing of whole and dehulled flaxseed for organic oil. J. Am. Oil Chemistry Soc., 80, 1039-1045.

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