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Registros recuperados: 6
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Defensive secretion of Therea petiveriana : chemical identification and evidence of an alarm function Inra
Farine, J.P.; Sémon, E.; Everaerts, C.; Abed, D.; Grandcolas, P.; Brossut, R..
The volatile constituents of the supposed defensive secretions of the glandular pouches of the adults of both sexes of the cockroach Therea petiveriana have been shown to contain N-3-methylbutylacetamide (MBA) and N-3-methylbutylpropanamide (MBP), which represented 60% of the volatile fraction. The other 40% included acidic, aromatic, and aldehydic compounds. Behavioral experiments demonstrated that the secretion acts as an alarm pheromone for adults.
Tipo: Journal Article Palavras-chave: BLATTE; PHEROMONE D'ALARME; BLATTARIA; DICTYOPTERA; THEREA PETIVERIANA DICTYOPTERA; POLYPHAGIDAE; THEREA PETIVERIANA; EXOCRINE GLANDS; PHEROMONES; ALARM.
Ano: 2002 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PUB0300035047097037&uri=/notices/prodinra1/2010/11/
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Evaluation of the solid phase microextraction (SPME) technique for the analysis of human breath during eating Inra
Pionnier, E.; Sémon, E.; Chabanet, C.; Salles, C..
Une méthode de couplage microextraction sur phase solide/chromatographie en phase gazeuse/spectrométrie de masse (SPME-GC-MS) a été utilisée comme alternative à l'analyse par API-MS des effluves nasales pour suivre la libération de composés d'arômes présents dans l'air expiré pendant la dégustation d'un fromage modèle aromatisé avec du diacétyle, de l'heptan-2-one, de l'hexanoate d'éthyle, de l'heptan-2-ol, de l'acide propanoïque et de l'acide butanoïque. Cinq types de fibres possédant un greffage différent ont été évalués pour leur sélectivité, sensibilité, stabilité et les phénomènes de compétition. Parmi ceux-ci, la fibre greffée avec un polymère de type polydiméthylsiloxane (PDMS) était la plus appropriée. Une méthode basée sur un temps...
Tipo: Journal Article Palavras-chave: SPME; PDMS; NOSESPACE; FLAVOR; API-MS; MODEL CHEESE.
Ano: 2005 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD200874abac5c&uri=/notices/prodinra1/2008/11/
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Flavored yogurt complex viscosity influences real-time aroma release in the mouth and sensory properties Inra
Saint-Eve, A.; Martin, N.; Guillemin, H.; Sémon, E.; Guichard, E.; Souchon, I..
The influence of flavored yogurt texture on aroma perception and in-nose aroma release measured by atmospheric pressure chemical ionization mass spectrometry analysis was investigated. The study was carried out on six yogurts varied by protein composition and mechanical treatment. For the same matrix composition, the complex viscosity of yogurts influenced in-nose release and perception. After swallowing, aroma release and intensity of olfactory perception were stronger in low-viscosity yogurts than in high-viscosity yogurts. Moreover, the protein composition influenced aroma release only when yogurts exhibited wide variations of complex viscosity and consequently texture. In mouth, aroma release and perception were influenced more by yogurt mechanical...
Tipo: Journal Article Palavras-chave: DAIRY PROTEINS; AROMA RELEASE; TEXTURE; PERCEPTION; APCI-MS.
Ano: 2006 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2008f0266ae8&uri=/notices/prodinra1/2008/11/
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Identification of multi-component trail pheromones in the most evolutionarily derived termites, the Nasutitermitinae (Termitidae) Inra
Sillam-Dussès, D.; Sémon, E.; Robert, A.; Cancello, E.; Lenz, M.; Valterova, I.; Bordereau, C..
In the present study, trail pheromone blends are identified for the first time in termites. In the phylogeneticallycomplex Nasutitermitinae, trail-following pheromones are composed of dodecatrienol and neocembrene, theproportions of which vary according to species, although neocembrene is always more abundant than dodecatrienol(by 25–250-fold). Depending on species, termites were more sensitive to dodecatrienol or to neocembrene but theassociation of both components always elicited significantly higher trail following, with a clear synergistic effect inmost of the studied species. A third component, trinervitatriene, was identified in the sternal gland secretion ofseveral species, but its function remains unknown. The secretion of trail pheromone blends...
Tipo: Journal Article Palavras-chave: TERMITE (3Z 6Z 8E)-DODECA-3 6 8-trien-1-ol; NEOCEMBRENE; SPECIES-SPECIFICITY; TRINERVITATRIENNE.
Ano: 2010 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2010ba0100f8&uri=/notices/prodinra1/2010/07/
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Trail-following pheromones in basal termites, with special reference to Mastotermes darwiniensis Inra
Sillam-Dussès, D.; Sémon, E.; Lacey, M.J.; Robert, A.; Lenz, M.; Bordereau, C..
In the framework of an evolutionary study, trail pheromones have been studied in the most basal extant termite, Mastotermes darwiniensis (Mastotermitidae), and two other basal termites, the Termopsidae Porotermes adamsoni (Porotermitinae) and Stolotermes victoriensis (Stolotermitinae). Although workers of M. darwiniensis do not walk in single file while exploring a new environment under experimental conditions and are unable to follow artificial trails in ‘open field’ experiments, they do secrete a trail-following pheromone from their sternal glands. This unique behavior might reflect a primitive function of communication of the sternal gland. The major component of the pheromone appears to be the same in the three basal species: the norsesquiterpene...
Tipo: Journal Article Palavras-chave: POROTERMES ADAMSONI; STOLOTERMES VICTOTRIENSIS.
Ano: 2007 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD20084ae12cdf&uri=/notices/prodinra1/2010/11/
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(Z,Z,E)-3,6,8-dodecatrien-1-ol, a major component of trail-following pheromone in two sympatric termite species Reticulitermes lucifugus grassei and R. santonensis Inra
Wobst, B.; Farine, J.P.; Ginies, C.; Sémon, E.; Robert, A.; Bonnard, O.; Connétable, S.; Bordereau, C..
Trail-following bioassays show that trails of the two subterranean termites, Reticulitermes lucifugus grassei and R. santonensis, which are sympatric in some areas of southwestern France, are not species specific. Even when tested just above threshold level, trails from pentane extracts of whole workers of R. santonensis are always preferred by both species. If the R. santonensis extract is progressively diluted, the preference is lost. In purified extracts of workers of R. lucifugus grassei that elicited a trail-following response, only one compound is active. It was identified by GC-MS as the same major compound of the trail-following pheromone of R. santonensis: (Z,Z,E)-3,6,8-dodecatrien-1-ol (DTE-OH). The threshold concentration of activity of...
Tipo: Journal Article Palavras-chave: TERMITE; RETICULITERME LUCIFUGUS GRASSEI; RETICULITERME SANTONENSIS; PHEROMONE SEXUELLE; COMPOSITION CHIMIQUE; COMMUNICATION ANIMALE TRAIL-FOLLOWING PHEROMONES; (Z Z E)-3 6 8-DODECATRIEN-1-OL; SPECIFICITY; TERMITES; RETICULITERMES LUCIFUGUS GRASSEI; RETICULITERMES SANTONENSIS; GC-MS.
Ano: 1999 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PUB0000033887079664&uri=/notices/prodinra1/2010/11/
Registros recuperados: 6
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