Oil Point Pressure of Soybean

Ajibola, O.O.; Okunade, D. A.; Owolarafe, O. K.

doi:10.1111/j.1745-4530.2002.tb00574.x

Cited by 29 publications

(43 citation statements)

References 10 publications

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“…Dependency between compressive force and deformation curves of bulk unroasted kernels in relation to different speed, similar to roasted bulk kernels. mucilage consumes energy generated by the pressure to compress the oil out of the oil-bearing cells thus increasing the oil point pressure (Ajibola et al, 2002). In this study, the average oil point strain of both kernels was higher in comparison with the findings of some of the above-mentioned authors.…”

Section: Resultscontrasting

confidence: 53%

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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Section: Resultscontrasting

confidence: 53%

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 strips were allowed to project well inside the cylinder so as to spot oil when the oil point was attained. The pressure applied to each sample through the point load was varied by moving the cylinder and contents across the lever (Ajibola et al, 2002;Ogunsina et al, 2008).…”

Section: Methodsmentioning

confidence: 99%

“…Identification of the oil point pressure in mechanical oil expression is an important step in mechanical oil expression. Oil point pressure is usually influenced by certain prepressing operations such as cleaning and dehulling, particle size reduction, moisture content adjustment and heat treatment (Ajibola et al, 2000;Ogunsina et al, 2008;Oyinlola and Adekoya, 2004).…”

Section: Introductionmentioning

confidence: 99%

Oil point pressure of Indian almond kernels

Aregbesola

Olatunde

Esuola

et al. 2012

International Agrophysics

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A b s t r a c t. The effect of preprocessing conditions such as moisture content, heating temperature, heating time and particle size on oil point pressure of Indian almond kernel was investigated. Results showed that oil point pressure was significantly (P < 0.05) affected by above mentioned parameters. It was also observed that oil point pressure reduced with increase in heating temperature and heating time for both coarse and fine particles. Furthermore, an increase in moisture content resulted in increased oil point pressure for coarse particles while there was a reduction in oil point pressure with increase in moisture content for fine particles.K e y w o r d s: Indian almond kernels, oil point pressure, oil expression, preprocessing

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“…Solvent oil extraction is the most efficient method and is able to extract over 98 % oil (Yoyock et al 1988). However, it is costlier, dangerous and flammable (Bargale et al 1999;Ajibola et al 2002). Mechanical pressing using hydraulic press, screw press and rolling press is technically less extensive and used for high oil bearing materials to extract most of the oil prior to solvent extraction of the remaining oil from the cake (Bamgboye and Adejumo 2007).…”

Section: Introductionmentioning

confidence: 99%

Screw pressing performance of whole and dehulled flaxseed and some physico-chemical characteristics of flaxseed oil

2013

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Screw pressing performance of whole and dehulled flaxseed at different seed moisture (6.4 to 11.1 % d.b.) and press head temperature (80-120°C) was investigated. Oil recovery, residual oil, press rate and sediment content and some important physico-chemical characteristics were determined at six different levels (50, 60, 70, 80, 90 and 100 %) of dehulled flaxseed. Oil recovery decreased with increasing moisture content as well as press head temperature. Press rate was found maximum for 100 % dehulled flaxseed while minimum for 50 % dehulled flaxseed at 6.4 % moisture content. Colour of oil samples was found affected both with the level of dehulled flaxseed and press head temperature. Free fatty acids content of oil ranged from 1.07 % to 2.70 % and lower at 80°C press head temperature. Oil and cake temperatures ranged from 53.10°C to 65.95°C and 69.15 to 103.75°C, respectively. The α-linolenic acid content of different oil samples obtained at 80°C was in the range of 53.34±0.95 to 54.21±1.04 %. In view of maximum oil recovery (82.9 % d.b.), lower FFA content, and oil and cake temperature, 7:3 ratio of dehulled and whole flaxseed having 6.4 % d.b. moisture content and 80°C press head temperature may be considered for screw pressing of flaxseed.

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Oil Point Pressure of Soybean

Cited by 29 publications

References 10 publications

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

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

Oil point pressure of Indian almond kernels

Screw pressing performance of whole and dehulled flaxseed and some physico-chemical characteristics of flaxseed oil

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