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    Fatty acids and sterols from pollens of two Coniferales

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    Extn. and chromatog. procedures applied to the pollens from Cephalotaxus drupacea and Cunninghamia lanceolata showed the presence of β-sitosterol, stigmasterol, campesterol, 24-methylenecholesterol, cholesterol, and several fatty acids (C14:0, C16:0, C18:0, C18:1, C18:2, C18:3, C20:0, C22:0, and C26:0). The 2 pollens were quite similar in quant. compn. The major fatty acids were unsatd. ones, which predominated over the satd. ones; oleic and linoleic acids were the main unsatd. constituents, and palmitic acid was the most abundant satd. fatty acid. Among the sterols, β-sitosterol accounted for approx. half of the total present in the 2 pollens

    Free aminoacids contents in two pollens of Coniferales

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    Pollen from Cunninghamia lanceolata and Cephalotaxus drupacea were examd. for their free amino acid compn. A large amt. of proline was found in both pollens. The identification and percentages of the amino acids were carried out by gas chromatog
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