Browsing by Author "Timmermann, Barbara N."

Now showing items 1-3 of 3

    • Increase in gramine content in barley infested by the aphid Schizaphis graminum R 
      Velozo, Juan A.; Alvarez, Rodrigo I.; Wächter, Gerald A.; Timmermann, Barbara N.; Corcuera, Luis J. (Elsevier Ltd, 1999)
      The kinetics of accumulation of gramine were measured in three aphid infested and non-infested cultivars of barley (Hordeum vulgare; cvs. Frontera, Libra and Acuario). After 6 days of infestation gramine content increased ...
    • Phenolic compounds of propolis from Central Chilean matorral 
      Muñoz Muñoz, Orlando; Peña, Raúl C.; Ureta, Enrique; Montenegro, Gloria; Caldwell, Colby; Timmermann, Barbara N. (Verlag der Zeitschrift fur Naturforschung, 2001)
      Pinocembrin, acacetin, galanguin, izalpin, kaempferide, prenyletin and diarytheptane were isolated from propolis from Central Chile.
    • Propolis from Chilean matorral hives 
      Muñoz Muñoz, Orlando; Peña, Raúl C.; Ureta, Enrique; Montenegro, Gloria; Timmermann, Barbara N. (Verlag der Zeitschrift fur Naturforschung, 2001)
      Viscidone (0.5%), vanillin, 3′,4′-(methylendioxy)acetophenone, 3-ethoxy-4-methoxybenzaldehyde, cinnamic acid, 3-methoxy-4-hydroxymethyl ester were isolated from propolis of hives from Cuncumen. This is the first report on ...