MONOTERPENES AND SESQUITERPENES IN THE HEADSPACE VOLATILES FROM INTACT PLANTS OF PSEUDOGNAPHALIUM VIRA VIRA, P. HETEROTRICHIUM, P. CHEIRANTHIFOLIUM AND P. ROBUSTUM: THEIR INSECT REPELLENT FUNCTION
Thirty-seven monoterpenes and sesquiterpenes have been identified in the headspace of four Pseudognaphalium spp. The major compound identified was alpha-(z)-ocimene [1]: 87.0% in P. vira vira, 45.0% in P. heterotrichium, 41.0% in P. cheiranthifolium and 76.0% in P. robustum. Other major components w...
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| Lenguaje: | English |
| Publicado: |
Sociedad Chilena de Química
2002
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| Materias: | |
| Acceso en línea: | http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0366-16442002000200005 |
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| Sumario: | Thirty-seven monoterpenes and sesquiterpenes have been identified in the headspace of four Pseudognaphalium spp. The major compound identified was alpha-(z)-ocimene [1]: 87.0% in P. vira vira, 45.0% in P. heterotrichium, 41.0% in P. cheiranthifolium and 76.0% in P. robustum. Other major components were germacrene D [2] (6.4%) in P. vira vira, beta-phellandrene [3] (45.4% and 27.4%) in P. heterotrichium and P. cheiranthifolium, germacrene B [4](17.9%) in P. cheiranthifolium and (E)-3,7,11-trimethyl-1,6,10-dodecatriene-3-ol [5] (9.5%) in P. robustum. The insect repellent function of the mixture of volatile compounds is discussed |
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