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The fatty acid composition of the oil has been examined by gas‐liquid chromatography and found to contain 26.7% of palmitic, 5.7% of stearic, 33.4% of oleic and 34.2% of linoleic acids. The unsaponifiable matter of the oil, which contains 55% of digitonide‐forming sterols, has been separated by thin‐layer chromatography into six components, two of which give positive Liebermann‐Burchard and one positive Emmerie‐Engel tests.
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Broadbent et al. (1963) studied this question.
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