Among the main polyphenols occurring in olive oil vegetation waters (VW), catechol showed the most deterrent action on the oviposition of Bactrocera oleae (Gmelin); 4-methylcatechol was less active, whereas hydroxytyrosol and tyrosol were inactive. In contrast, synthetic o-quinone was found to be stimulant at 7.5 x 10(-2) M. Two other synthetic derivatives of catechol, diacetylcatechol and guaiacol, were also deterrent, suggesting these compounds undergo a biochemical transformation into catechol by means of the bacterial symbionts of B. oleae. VW and their phenolic extracts showed deterrence only when highly concentrated, while natural olive juice was strongly deterrent. Experiments carried out to evaluate the effect of olive juice and catechol on the fecundity of B. oleae showed that they strongly reduce this function. Moreover, the possible utilization of VW and their bioactive polyphenols in protection of olives against Batrocera oleae is discussed.
Direct and Mediated Effects On Bactrocera-oleae (gmelin) (diptera, Tephritidae) of Natural Polyphenols and Some of Related Synthetic Compounds - Structure-activity-relationships / Capasso, R.; Evidente, A.; Tremblay, E.; Sala, A.; Santoro, C.; Cristinzio, G.; Scognamiglio, F.. - In: JOURNAL OF CHEMICAL ECOLOGY. - ISSN 0098-0331. - 20:(1994), pp. 1189-1199. [10.1007/BF02059753]
Direct and Mediated Effects On Bactrocera-oleae (gmelin) (diptera, Tephritidae) of Natural Polyphenols and Some of Related Synthetic Compounds - Structure-activity-relationships
A. EVIDENTE;
1994
Abstract
Among the main polyphenols occurring in olive oil vegetation waters (VW), catechol showed the most deterrent action on the oviposition of Bactrocera oleae (Gmelin); 4-methylcatechol was less active, whereas hydroxytyrosol and tyrosol were inactive. In contrast, synthetic o-quinone was found to be stimulant at 7.5 x 10(-2) M. Two other synthetic derivatives of catechol, diacetylcatechol and guaiacol, were also deterrent, suggesting these compounds undergo a biochemical transformation into catechol by means of the bacterial symbionts of B. oleae. VW and their phenolic extracts showed deterrence only when highly concentrated, while natural olive juice was strongly deterrent. Experiments carried out to evaluate the effect of olive juice and catechol on the fecundity of B. oleae showed that they strongly reduce this function. Moreover, the possible utilization of VW and their bioactive polyphenols in protection of olives against Batrocera oleae is discussed.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
