Journal
FOOD CHEMISTRY
Volume 83, Issue 1, Pages 63-68Publisher
ELSEVIER SCI LTD
DOI: 10.1016/S0308-8146(03)00038-4
Keywords
Nigella; fatty acid composition; sterols; physical properties
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Physico-chemical properties of nigella seeds cultivated in Egypt were determined. Physical and chemical analyses of crude oils extracted from the seeds, by two different methods were also performed. The results revealed that nigella seed is a good source for oil and protein. Percentage of oil extraction, as well as physical and chemical properties of the crude oil, was influenced by the extraction methods. TLC and GLC analysis indicated that nigella seed oil contained significant amounts of sterols. Linoleic (C-18:2), oleic (C-18:1) and palmitic (C-16:0), as in most of the common edible oils, are the main fatty acids. The oil was rich in beta-sitosterol that inhibits the absorption of dietary cholesterol. (C) 2003 Published by Elsevier Ltd.
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