Search Results

37 results

  1. Tob. Sci., 1959, 3-02, p. 4-8, ISSN.0082-4523

    Composition studies on tobacco. IV. Ergosterol, γ-sitosterol and a partially characterized steroidal glycoside from flue-cured leaves

    DYMICKY M.; STEDMAN R.L.
    Eastern Regional Research Laboratory, Philadelphia, Pennsylvania USA
    A partial separation of mixed tobacco phytosterols has been achieved by column chromatography on acid-washed alumina followed by fractional precipitation; ergosterol and γ-sitosterol were isolated and identified. Ergosterol is apparently a minor...
  2. Tob. Sci., 1959, 3-07, p. 44-47, ISSN.0082-4523

    Composition studies on tobacco. V. Free and combined 3-β sterols of freshly harvested, aged or fermented tobaccos

    STEDMAN R.L.; RUSANIWSKYI W.
    Eastern Regional Research Laboratory, Philadelphia, Pennsylvania USA
    A semi-micro gravimetric method for the determination of 3-β sterols in free and combined forms is described. Preliminary methodological studies are also summarized. A number of green, aged or fermented samples of tobacco leaves and midribs was...
  3. Tob. Sci., 1959, 3-11, p. 60-61, ISSN.0082-4523

    Composition studies on tobacco. VII. Isoeugenol, hydrocarbons and probable bound stigmasterol from flue-cured leaves

    DYMICKY M.; STEDMAN R.L.
    Eastern Regional Research Laboratory, Philadelphia, Pennsylvania USA
    The partial fractionation of an alcoholic extract of unaged Type 12 tobacco leaves is described. From this work, isoeugenol (free or esterified), a probably bound form of stigmasterol and two fractions containing paraffinic hydrocarbons were...