Abstract
The cooking and drying conditions for oilseeds preparatory to screw pressing are some of the most important factors that influence screw-press performance. Screw-press oil recovery, residual oil, pressing rate, and oil sediment content were measured for uncooked crambe seed and crambe seed cooked at 100°C for 10 min, pressed at six moisture contents ranging from 9.2 to 3.6% dry basis. Oil recovery significantly increased (P≤0.01) from 69 to 80.9% and 67.7 to 78.9% for cooked and uncooked seeds, respectively, as moisture content decreased. Residual oil significantly decreased (P≤0.01) from 16.3 to 11.1% and 16.9 to 11.9%, respectively, as moisture content decreased. The reduced oil loss due to only drying the seed from 9.2 to 3.6% was 32% for cooked seed, whereas cooking contributed only 3.6 to 7% reduced oil loss. Pressing rate decreased from 5.81 to 5.17 kg/h and 6.09 to 5.19 kg/h for cooked and uncooked seeds, respectively, whereas sediment content increased from 0.9 to 7.8% and 1.1 to 5.4%, respectively, as moisture content decreased. The effects of moisture content on pressing rate and sediment content were significant at P≤0.05. All relationships of screw-press performance to moisture content were fitted to a second-order polynomial.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Haumann, B.F., Mechanical Extraction: Capitalizing on Solvent-Free Processing, Inform 8:165, 167–168, 171, 173–174 (1997).
Ward, J.A., Processing High Oil Content Seeds in Continuous Press, J. Am. Oil. Chem. Soc. 53:261–264 (1976).
Reuber, M., New Technologies for Processing Crambe abyssinica, M.S. Thesis, Iowa State University, Ames, 1992.
Wiesenborn, D., R. Doddapaneni, K. Tostenson, and N. Kangas, Cooking Indices to Predict Screw-Press Performance for Crambe Seed, J. Am. Oil Chem. Soc. 78:467–471 (2001).
Thompson, J.C., and C.L. Peterson, An Automated Small-Scale Seed Processing Plant for Production of Fuel for Diesel Engines, in Vegetable Oil Fuels, ASAE Publication No. 4-82, ASAE, St. Joseph, MI, 1982, pp. 260–268.
Blake, J.A., Evaluation of an On-Farm Press, —Ibid. in.
Khan, L.M., and M.A. Hanna, Expression of Oil from Oilseeds—A Review, J. Agric. Eng. Res. 28:495–503 (1983).
Farsai, A., and M.S. Singh, On-Farm Sunflower Production, ASAE Paper No. NAR 83-307, ASAE, St. Joseph, MI.
Ajibola, O.O., S.E. Eniyemo, O.O. Fasina, and K.A. Adeeko, Mechanical Expression of Oil from Melon Seeds, J. Agric. Eng. Res. 45: 45–53 (1990).
Bargale, P.C., and J. Singh, Oil Expression Characteristics of Rapeseed for a Small-Capacity Screw Press, J. Food Sci. Technol. 37:130–134 (2000).
Singh, M.S., A. Farsai, L.E. Stewart, and L.W. Douglass Development of Mathematical Models to Predict Sunflower Oil Expression, Trans. ASAE 27:1190–1194 (1984).
Vargas-Lopez, J.M., D. Wiesenborn, K. Tostenson, and L. Cihacek, Processing of Crambe for Oil and Isolation of Erucic Acid, J. Am. Oil Chem. Soc. 76:801–809 (1999).
Singh, J., and P.C. Bargale, Mechanical Expression of Oil from Linseed (Linum usitatissimum L.), J. Oilseeds Res. 7:106–110 (1990).
Watkins, C., Crambe—Ready to Be a Commercial Success, inform 10:828–834, 836 (1999).
Hoffmann, G., The Chemistry and Technology of Edible Oils and Fats and Their High-Fat Products, Academic Press, New York, 1989, pp. 63–68.
Author information
Authors and Affiliations
Corresponding author
About this article
Cite this article
Singh, K.K., Wiesenborn, D.P., Tostenson, K. et al. Influence of moisture content and cooking on screw pressing of crambe seed. J Amer Oil Chem Soc 79, 165–170 (2002). https://doi.org/10.1007/s11746-002-0452-3
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/s11746-002-0452-3