Supercritical fluid extraction of daphne (Laurus nobilis L.) seed oil |
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Authors: | Sedat H Beis Nurhan T Dunford |
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Affiliation: | (1) Department of Chemical Engineering, Anadolu University, Eskisehir, Turkey;(2) Department of Plant and Soil Sciences and Agricultural Products Research and Technology Center, Oklahoma State University, Room 103, 74078 Stillwater, OK |
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Abstract: | Laurus nobilis L., commonly known as daphne tree, is an evergreen that belongs to the Lauraceae family. Daphne trees produce grape-sized
shiny purplish berries having three parts: flesh, skin, and an inner kernel (single seed). This study examines supercritical
CO2 (SC-CO2) extraction of oil from daphne seeds. The oil yield of ground seeds varied from 14 to 28% depending on the method and particle
size used for oil recovery. Yields were similar for both petroleum ether and SC-CO2 extraction. The extraction yield decreased significantly with increasing particle size. The amount of extract collected increased
exponentially with increasing SC-CO2 pressure. The highest extraction yield was obtained at the highest temperature studied, 75°C. More than 45% of the oil was
lauric acid. SC-CO2 is a viable technique to obtain high-purity L. nobilis L. seed oil, which is a potential ingredient for the cosmetic industry. |
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Keywords: | Daphne lauric acid Laurus nobilis L supercritical carbon dioxide |
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