A study on the effect of washing kernel on yield, colour and a rheological property of snake gourd oil

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Published: May 15, 2015
Keywords:
Snake gourd oil Oil content Washed kernel Oil colour Oil extraction

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Idowu, D. O.
Department of Agricultural Engineering, Ladoke Akintola University of Technology, Ogbomoso, Oyo State, Nigeria

Abstract

Viscosity is one of the most important parameters that determine the overall quality, stability and usability of vegetable oil. This study investigated the effect of washing snake gourd kernel before oil extraction on quantity of oil extracted, and colour; and effect of temperature on viscosity of the oil. The oil from the kernel was extracted chemically using Lees-Folch type extraction process. The viscosities of oil extracted from washed and unwashed kernel of snake gourd were experimentally determined as a function of temperature from 40 to 100o C at 10oC interval using an automatic viscometer (PolyVISC 9724 Z18) and the results obtained were analyzed. The result showed that the oil content from unwashed and washed kernel is 52% and 37% respectively. The colour of the oil was improved by kernel washing. The oil extracted from the unwashed kernel was grayish in colour while the oil from the washed kernel is golden yellow. It was observed that the viscosity of oil from washed kernel were higher at all temperature and varied from 36.49  to 8.84 mm²/ s and that of the oil extracted from unwashed sample varied from 23.38 to 6.48 mm²/ s when the temperature increases from 40°C to 100°C. The relationship between the viscosity and temperature of snake gourd oil shows an inverse variation. The result of these experiment are  valuable in developing or evaluating system that are involve in the storage, handling, and processing of snake gourd oils.

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How to Cite
Idowu, D. O. (2015). A study on the effect of washing kernel on yield, colour and a rheological property of snake gourd oil. International Journal of Agricultural Technology, 11(4), 811–822. retrieved from https://li04.tci-thaijo.org/index.php/IJAT/article/view/6362
Issue
Vol. 11 No. 4 (2015): May
Section
Original Study
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This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

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