Studies on the physico-chemical properties of acetone-solubles from Torreya nucifera seeds, the composition, and chemical structure of desmethylsterol from the lipids are summarized as follows;
1. The acetone-soluble lipids and moisture content of Torreya nucifera seeds amounted to 46.6% and 9.3%, respectively.
2. The unsaponifiable content, iodine value, and saponification value of the lipids were 0.3%, 122 and 189.3, respectively.
3. The desmethylsterols comprised three components, whose Rrts (1.5% OV-17 to β-sitosterol) corresponded to 1.09 (trace), 1.16 (trace) and 1.33 (98%).
4. From IR, mass and NMR spectrometric features, the prominent desemethylsterol appears to be 24(?)-ethylcholesta-5-en-3β-ol.
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