Jump to ContentJump to Main Navigation
Show Summary Details
More options …

Scientia Agriculturae Bohemica

The Journal of Czech University of Life Sciences Prague

4 Issues per year

CiteScore 2016: 0.78

SCImago Journal Rank (SJR) 2016: 0.398
Source Normalized Impact per Paper (SNIP) 2016: 0.688

Open Access
See all formats and pricing
More options …

Deformation Curve Characteristics of Rapeseeds and Sunflower Seeds Under Compression Loading

M. Divišová / D. Herák / A. Kabutey / V. Šleger / R. Sigalingging / T. Svatoňová
Published Online: 2014-11-25 | DOI: https://doi.org/10.2478/sab-2014-0106


The deformation curve characteristics of rapeseeds and sunflower seeds compressed using the equipment ZDM 50-2313/56/18 and varying vessel diameters (40, 60, 80, and 100 mm) were investigated. Maximum compressive force of 100 kN was applied on bulk oilseeds of rape and sunflower of measured height 20-80 mm and deformed at a speed of 60 mm∙min-1. The compression test using the vessel diameters of 40 and 60 mm showed a serration effect while the vessel diameters of 80 and 100 mm indicated an increasing function effect on the force-deformation characteristic curves. Clearly, the increasing function effect described the region with oil flow and that of serration effect described the region without any oil flow. However, it was observed that the serration effect could be due to the higher compressive stress inside the smaller vessel diameters (40 and 60 mm) compared to those with bigger vessel diameters (80 and 100 mm). Parameters such as deformation, deformation energy, and energy density were determined from the force-deformation curves dependency showing both increasing function and serration effect. The findings of the study provide useful information for the determination of specific compressive force and energy requirements for extracting maximum oil from oilseed crops such as rape and sunflower.

Keywords: oilseed crops; vessel diameters; increasing function; serration effect


  • Bargale PC, Wulfsohn D, Irudayaraj J, Ford RJ, Sosulski FW (2000): Prediction of oil expression by uniaxial compression using time-varying oilseed properties. Journal of Agricultural Engineering, 77, 171-181.Google Scholar

  • Blahovec J (2008): Agromaterials - study guide. Czech University of Life Sciences Prague, Prague.Google Scholar

  • Grzegorz L (2007): Fracture toughness of pea: Weibull analysis. Journal of Food Engineering, 83, 436-443.Google Scholar

  • Gupta RK, Das SK (2000): Fracture resistance of sunflower seed and kernel to compressive loading. Journal of Food Engineering, 46, 1-8.CrossrefGoogle Scholar

  • Herak D, Gurdil G, Sedlacek A, Dajbych O, Simanjuntak S (2010): Energy demands for pressing Jatropha curcas L. seeds. Biosystems Engineering, 106, 527-534. doi: 10.1016/j. biosystemseng.2010.06.002.CrossrefWeb of ScienceGoogle Scholar

  • Herák D, Kabutey A, Sedláček A, Gurdil G (2011): Tangent curve utilization for description of mechanical behaviour of pressed mixture. Research in Agricultural Engineering, 57, 13-18.Google Scholar

  • Herák D, Kabutey A, Sedláček A, Gurdil G (2012): Mechanical behaviour of several layers of selected plant seeds under compression loading. Research in Agricultural Engineering, 58, 24-29.Google Scholar

  • Herak D, Kabutey A, Divisova M, Simanjuntak S (2013): Mathematical model of mechanical behaviour of Jatropha curcas L. seeds under compression loading. Biosystems Engineering, 114, 279-288. doi: 10.1016/j.biosystemseng.2012.12.007.Web of ScienceCrossrefGoogle Scholar

  • Herak D, Blahovec J, Kabutey A (2014): Analysis of the axial pressing of bulk Jatropha curcas L. seeds using reciprocal slope transformation. Biosystems Engineering, 121, 67-76. doi: 10.1016/j.biosystemseng.2014.02.009.Web of ScienceCrossrefGoogle Scholar

  • ISI (1966): Indian standard methods for analysis of oilseeds. Indian Standard Institute, IS 3579, New Delhi.Google Scholar

  • Izli N, Unal H, Sincik M (2009): Physical and mechanical properties of rapeseed at different moisture content. International Agrophysics, 23, 137-145.Google Scholar

  • Kabutey A, Herák D, Sedláček A. (2011): Behaviour of different moisture content of Jatropha curcas seeds under compression loading. Research in Agricultural Engineering, 2, 72-77.Google Scholar

  • Kabutey A, Herák D, Chotěborský R, Navrátilová M (2012a): Model for energy and deformation determination of selected oilseeds under compression loading - Short communication. Research in Agricultural Engineering, 58, 155-158.Google Scholar

  • Kabutey A, Sedláček A, Divišová M, Svatoňová T (2012b): Heat treatment temperature of Jatropha curcas L. seeds under compression loading. Scientia Agriculturae Bohemica, 43, 116-121.Google Scholar

  • Kabutey A, Herak D, Chotěborský R, Dajbych O, Divišova M, Boatri WE (2013): Linear pressing analysis of Jatropha curcas L seeds using different pressing vessel diameters and seed pressing heights. Biosystems Engineering, 115, 42-49. doi: 10.1016/j.biosystemseng.2012.12.016.CrossrefWeb of ScienceGoogle Scholar

  • Kabutey A, Herák D, Dajbych O, Divišová M, Boatri W. E, Sigalingging R (2014): Deformation energy of Jatropha curcas L seeds under compression loading. Research in Agricultural Engineering, 60, 68-74.Google Scholar

  • Mrema GC, McNulty PB (1985): Mathematical model mechanical oil expression from oilseeds. Journal of Agricultural Engineering Research, 31, 361-370.Google Scholar

  • Pereyra-Irujo GA, Izquierdo NG, Covi M, Nolasco SM, Quiroz F, Aguirrezábal LAN (2009): Variability in sunflower oil quality for biodiesel production: a simulation study. Biomass and Bioenergy, 33, 459-468.Web of ScienceGoogle Scholar

  • Raji AO, Favier JF (2004): Model for the deformation in agricultural and food particulate materials under bulk compressive loading using discrete element method II: theory, compression of oilseeds. Journal of Food Engineering, 64, 373-380.Google Scholar

  • Stroshine R, Hamann DD (1994): Physical properties of agricultural materials and food products. Course Manual, Pardue University, Lafayette. Google Scholar

About the article

Received: 2013-07-04

Accepted: 2014-04-08

Published Online: 2014-11-25

Published in Print: 2014-09-01

Citation Information: Scientia Agriculturae Bohemica, Volume 45, Issue 3, Pages 180–186, ISSN (Online) 1805-9430, ISSN (Print) 1211-3174, DOI: https://doi.org/10.2478/sab-2014-0106.

Export Citation

© 2014. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License. BY-NC-ND 3.0

Citing Articles

Here you can find all Crossref-listed publications in which this article is cited. If you would like to receive automatic email messages as soon as this article is cited in other publications, simply activate the “Citation Alert” on the top of this page.

O. L. Akangbe and D. Herak
Scientia Agriculturae Bohemica, 2017, Volume 48, Number 4
R. Sigalingging, D. Herák, A. Kabutey, M. Čestmír, and M. Divišová
Scientia Agriculturae Bohemica, 2015, Volume 45, Number 4

Comments (0)

Please log in or register to comment.
Log in