ABSTRACT
Two steroidal ketones, delta-4-cholesten-3-one and delta-3,-5-cholestadiene-7-one, were isolated and identified for the first time in anhydrous milk fat and in nonfat dry milk. Together with these, two isoprenoid alcohols, phytol and dihydrophytol, were identified in anhydrous milk fat. Their identities were established on the basis of chromatographic and mass spectral data and confirmed by comparison with authentic materials.
Subject(s)
Cholestenes/isolation & purification , Cholestenones/isolation & purification , Diterpenes/isolation & purification , Lipids/analysis , Milk/analysis , Phytol/isolation & purification , Animals , Cattle , Cholestadienes/isolation & purification , Chromatography, Gas , Mass Spectrometry , Phytol/analogs & derivativesSubject(s)
Cholestenes/analysis , Milk/analysis , Aluminum , Animals , Cattle , Chromatography , Chromatography, Gas , Chromatography, Thin Layer , Crystallization , Female , Mass Spectrometry , TemperatureABSTRACT
The structure of a sex pheromone of the codling moth. Laspeyresia pomonella (L.), has been determined by spectrometric and chemical degradative techniques and by synthesis to be (2Z, 6E)-7-methyl-3-propyl-2,6-decadien-1-ol. In field cage tests the synthesized sex pheromone was as attractive as the natural, but neither was as attractive as ten virgin females per trap.
Subject(s)
Insecta , Pheromones/analysis , Animals , Chromatography, Gas , Fatty Alcohols/analysis , Fatty Alcohols/chemical synthesis , Female , Infrared Rays , Magnetic Resonance Spectroscopy , Mass Spectrometry , Pheromones/chemical synthesis , Spectrum Analysis , Ultraviolet RaysABSTRACT
We observed no exchange between deuterated ethylene (C(2)D(4)) and the hydrogen of pea seedlings (Pisum sativum L. cv. Alaska). This suggests that bonding forces in which exchange could readily occur are not important in the physiological action of ethylene. Deuterated ethylene was just as effective as normal ethylene in inhibiting the growth of pea root sections. These results indicate that splitting carbon to hydrogen bonds did not occur during ethylene action.
