Identification and Significance of the Oil-point in Seed-oil Expression

Faborode, M.O.; Favier, J.F.

doi:10.1006/jaer.1996.0107

Cited by 48 publications

(53 citation statements)

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“…From the results, rapeseeds showed the greatest energy requirement of 53% input energy followed by jatropha and sunflower. Further, the determined amounts at oil point in the present study were higher compared to different studies reported in the literature (Blahovec and Reznicek, 1980;Danilov, 1976;Faborode and Favier, 1996;Fomin, 1978;Fornal et al, 1994;Herak et al, 2010;Koegel et al, 1973;Mrema and Mc Nulty, 1985;Sukumaran and Singh, 1989;Singh et al, 1984). Comparing maximal deformation ratios (Fig.…”

Section: Resultscontrasting

confidence: 51%

“…Considering rapeseed, sunflower seed and jatropha seed, not many studies (Faborode and Favier, 1996;Figueiredo et al, 2011;Herak et al, 2010) highlight the oil point determination under compression loading. To design pressing technology with minimum energy efficiency with respect to maximum oil output, it is important to understand in detail the mechanical behaviour of seeds pressed mixture under compression loading (Blahovec and Reznicek, 1980;Fomin, 1978).…”

Section: Introductionmentioning

confidence: 99%

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Comparison of the Mechanical Behaviour of Selected Oilseeds under Compression Loading

Herák

Kabutey

Divišová

et al. 2012

Not Bot Hort Agrobot Cluj

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The present study provides information about the comparison of mechanical behaviour of selected oil bearing crops namely rapeseeds (Brassica napus L.), sunflower seeds (Helianthus annus L.) and jatropha seeds (Jatropha curcas L.) under compression loading. In this research, the compression device ZDM 50 with a chart recorder and a pressing vessel with diameter 100 mm were used to determine the relationship between the magnitude of the pressing force and deformation characteristics of the oilseed crops pressed at initial height 80 mm. From the compression test, the amounts of true deformation, maximal deformation energy and compressive force of the pressed samples were calculated and also mathematical equations describing the limit deformation, maximal deformation ratio, energy ratio and oil point deformation ratio were determined. The oil point position on the deformation curve, that is, the first leakage of oil from the pressing vessel of the various oilseeds was determined and compared. Based on the measured amounts rapeseeds achieved the highest values followed by jatropha seed and then sunflower seed. The amount of deformation energy required for the seed deformation gives the indication the amount of energy needed for obtaining the oil from the seed. It was found that the measured amounts as well as the oil point position on the force-deformation curve of the pressed samples showed varying results due to the seeds physical and inherent characteristics.

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Section: Resultscontrasting

confidence: 51%

Section: Introductionmentioning

confidence: 99%

Comparison of the Mechanical Behaviour of Selected Oilseeds under Compression Loading

Herák

Kabutey

Divišová

et al. 2012

Not Bot Hort Agrobot Cluj

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“…The average values were 15.14 ± 0.06 and 18.35 ± 0.10. In the literature, the average oil point strain of some selected oilseeds or kernels of jatropha, melon, rapeseed, cashew, soybean and oil palm has been reported (Sukumaran and Singh, 1989;Faborade and Favier, 1996;Raji and Favier, 2004;Ogunsina et al, 2008;Herak et al, 2013). The values ranged between 0.38 to 0.69 at a moisture content between 4.3 and 8.5% w.b.…”

Section: Resultsmentioning

confidence: 99%

“…The initial pressing height of the bulk kernels was 40 mm. The oil point of the bulk kernels defined as the first drop of oil was determined by a litmus test for each deformation values of 5, 10, 15, 20, and 25 mm at a minimum speed of 5 mm min -1 (Faborade and Favier, 1996;Herak et al, 2013;). The percentage oil yield was determined by Eq.…”

Section: Methodsmentioning

confidence: 99%

“…The oil point is the stage at which the oilseed has been adequately squeezed onto the surface of the seeds which is theoretically related to the kernel density of the oilseed (Faborade and Favier, 1996). The present study is a further continuation of our previously published studies, and now the objectives were to determine the oil point pressure with the corresponding strain and the mechanical properties namely the deformation mm, deformation energy (J) and oil yield (%) of roasted and unroasted oil palm kernels in relation to varying speeds under compression loading.…”

Section: Introductionmentioning

confidence: 99%

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Oil point and mechanical behaviour of oil palm kernels in linear compression

Kabutey¹,

Herák²,

Chotěborský³

et al. 2017

International Agrophysics

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The study described the oil point and mechanical properties of roasted and unroasted bulk oil palm kernels under compression loading. The literature information available is very limited. A universal compression testing machine and vessel diameter of 60 mm with a plunger were used by applying maximum force of 100 kN and speed ranging from 5 to 25 mm min−1. The initial pressing height of the bulk kernels was measured at 40 mm. The oil point was determined by a litmus test for each deformation level of 5, 10, 15, 20, and 25 mm at a minimum speed of 5 mmmin−1. The measured parameters were the deformation, deformation energy, oil yield, oil point strain and oil point pressure. Clearly, the roasted bulk kernels required less deformation energy compared to the unroasted kernels for recovering the kernel oil. However, both kernels were not permanently deformed. The average oil point strain was determined at 0.57. The study is an essential contribution to pursuing innovative methods for processing palm kernel oil in rural areas of developing countries.

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Oil yield and compressibility modeling during microscale expression: Criteria for linseed breeding

Savoire

Lanoisellé

Ducatel³

et al. 2008

Euro J Lipid Sci & Tech

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Seven linseed varieties were harvested at seven times before complete maturity. Microscale oilseed expressions were subsequently carried out on it. A pressure of 10 MPa was applied for 1 h under uniaxial stress. The results were characterized in terms of oil, water and mucilage content, harvest date and oil yield. The piston displacement versus time (creep curves) was described by a four-Kelvin-Voigt elements viscoelastic model. Parameters were derived from the model, such as the mechanical properties of seeds (compressibility moduli), showing that the viscoelastic model fits well the experimental data (R 2 < 0.999). The modeling parameters were combined with some biochemical data in order to predict the kinetics of oil extraction.

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Identification and Significance of the Oil-point in Seed-oil Expression

Cited by 48 publications

References 0 publications

Comparison of the Mechanical Behaviour of Selected Oilseeds under Compression Loading

Comparison of the Mechanical Behaviour of Selected Oilseeds under Compression Loading

Oil point and mechanical behaviour of oil palm kernels in linear compression

Oil yield and compressibility modeling during microscale expression: Criteria for linseed breeding

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