Abstract
1. 1. Some non-saponifiable materials from H. diminuta were characterized with particular emphasis given to the prenoid alcohol, farnesol. 2. 2. The cestode's non-saponifiables contained farnesol which was identified and quantified using column chromatography, gas-liquid chromatography, mass spectrometry, and isotope dilution. 3. 3. Only the 2- trans, 6- trans isomer of farnesol was found, being present at a mean concentration of 0.65 μg/g wet weight tissue. No 2- cis, 6- trans isomer was detected. 4. 4. Two non-prenoid materials with apparent molecular weights of 224, possibly representing isomeric variants, were found. One of these materials co-chromatographed with 2- cis, 6- trans farnesol on a 15% FFAP gas-liquid chromatographic column. 5. 5. The cestode's non-saponifiables contained copious quantities of cholesterol.
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