Search results for "ODOR"
showing 10 items of 569 documents
How does a newly born mouse get to the nipple? odor substrates eliciting first nipple grasping and sucking responses
2012
It is a mammalian female strategy to emit odor cues and signals that direct their inexperienced newborns to the nipple, and optimize their initial sucking success and, hence, viability. Here, natural odorous substrates that contribute to nipple grasping were investigated in mice, a species that has not been much scrutinized on this topic. The response of pups toward the nipples of lactating females (LF) versus nonlactating females (NLF) were first assessed right after watched birth, before and after the first suckling experience, and at 1 day old, after more extended suckling experience. It appeared that only nipples of LF induced grasping at these early ages, leading to take NLF as the bas…
Salt and Aroma Compound Distributions Influence Flavour Release and Temporal Perception While Eating Hot-Served Flans.
2021
International audience; To counteract the negative effect of salt overconsumption on health, strategies have been developed to reduce the salt content in food products. Among them, two promising strategies based on odour-induced saltiness enhancement and the heterogeneous distribution of flavour compounds were combined and assessed in four-layer cream-based snacks. To investigate the relationship between saltiness enhancement, temporal release and perception of flavour compounds in hot snacks with heterogeneous distribution of salt and aroma compounds, complementary techniques were used: nose space PTR-Tof-MS (Proton Transfer Reaction-Time of Flight–Mass Spectrometry) to assess the release …
Comparison of conventional descriptive analysis and a citation frequency-based descriptive method for odor profiling: An application to Burgundy Pino…
2010
International audience; The limitations of intensity scoring when describing the odor characteristics of a complex product have been documented in the literature. In the present work, the odor properties of 12 Burgundy Pinot noir wines were described by two independent panels performing, respectively, an intensity-based (conventional descriptive analysis) and a citation frequency-based method. Methods were compared according to three criteria: similarity of the sensory maps, control of panel performance and practical aspects. Intensity scoring and citation frequency data were analyzed, respectively, by Principal Components Analysis (PCA) and Correspondence Analysis (CA) followed by Hierarch…
Impact of ethanol on the perception of wine odorant mixtures
2007
International audience; Several studies have focused on perceptual interactions in binary odor mixtures, but few on more complex mixtures. The aroma of wine is an example of a complex odor mixture. Our aim was to assess the impact of ethanol on the perception of mixtures of Woody (whiskey lactone) and Fruity (isoamyl acetate) odorants commonly found, physico-chemically and perceptually, in wine. Physico-chemically, reduced whiskey lactone volatility was observed in hydro-alcoholic solutions. Perceptually, a synergy effect by the Woody on the Fruity odor was observed in aqueous solutions, which disappeared with the addition of ethanol. Conversely, the Woody odor was masked in both aqueous an…
Volatile components of dry-cured ham
1991
The volatile components of dry-cured ham were isolated by vacuum distillation and analyzed by gas chromatography-mass spectrometry. The structures of 76 molecules were identified by mass spectrometry, cochromatography, or measured Kovats indices. The compounds identified may come from the catabolism of the main constituent parts of the meat (glucids, lipids and protids) during the curing of the hams, from the pig feed, or from technological processes. The volatile compounds extracted from 50 g of ham according to the technique described correspond to a chromatographical surface equivalent to 0.12 mg of the dodecane internal standard, or approximately 2.4 ppm of the weight of the sample. Fla…
Emisiones difusas: medidas experimentales y modelización aplicadas a instalaciones de tratamiento de aguas residuales
2015
Los olores emitidos por la actividad rutinaria de una planta de tratamiento de aguas residuales (EDAR) representan una importante fuente de molestia medioambiental que, por lo general, implica la liberación atmosférica de sustancias que causan mal olor y problemas de salud asociados. Actualmente, existe una preocupación pública sobre los olores que se generan con trabajos de tratamiento de residuos. Esta preocupación ha aumentado en la última década debido principalmente a la sobrecarga en las zonas de captación y la invasión de núcleos habitados en torno a instalaciones de tratamiento de aguas residuales (reduciendo los márgenes de seguridad impuestos a éstos). Estas potenciales emisiones …
Fuegos que no queman en la novela griega antigua y las ordalías en Aquiles Tacio y Heliodoro
2019
La cremación como castigo a los condenados a muerte ya fue utilizada en la Antigüedad. En algunos casos, ciertas personas no se ven afectadas por las llamas a causa de la intervención divina. Se trata de un motivo literario y folklórico que parte del Antiguo Testamento (libro 3 de Daniel) y aparece también en la novela griega antigua, con matices variados. Aquiles Tacio y Heliodoro presentan al final de sus obras sendas ordalías en que los personajes encausados demuestran su inocencia, pero con lecturas bien diferentes en una y otra novela. Cremation as a punishment for those sentenced to death was already used in Antiquity. In some cases, certain people are not affected by the flames becau…
Heliodor, Etiòpiques VI 14-15: un cas únic de necromància a la novel·la grega antiga
2014
La tradició literària que hi ha al darrere de la novel·la d'Heliodor Teàgenes i Cariclea és abundant en obres i en gèneres, però especialment deutora de l'Odissea d'Homer. L'únic passatge de necromància de la novel·la grega antiga també presenta, i de manera molt evident i curiosa, aquesta intertextualitat, oferint importants punts en contacte amb la nékyia del cant XI de l'obra homèrica. Així mateix, remet als ritus egipcis que descriu Heròdot al llibre II de la seua Història i al d'Els perses d'Èsquil per convocar el fantasma de Darios. Es tracta d'un passatge singular amb motius de la literatura grega precedent. The literary tradition which underlies to the Heliodorus' roman Theagenes an…
Leptodora kindti (Focke) (Crustacea; Cladocera) bioloģija un loma saldūdens ekosistēmās
1993
Ievads 1. Leptodora kindti populācijas sezonālā dinamika un vertikālās migrācijas 1.1. Materiāli un metodika 1.2. Rezultāti un to apspriešana 1.2.1. L. kindti dzīves cikls, izmēri un auglība 1.2.2. L. kindti populācijas sezonālā dinamika 1.2.3. L. kindti diennakts vertikālās migrācijas 2. Leptodora kindti lineārā augšana un populācijas produktivitāte 2.1. Materiāli un metodika 2.2. Rezultāti un to apspriešana 2.2.1. L. kindti lineārās augšanas ātrums 2.2.2. L. kindti augšanas procesu īpatnības un populācijas produktivitātes rādītāju analīze 3. Leptodora kindti barošanās 3.1. Materiāli un metodika 3.2. Rezultāti un to apspriešana 3.2.1. Pieaugušo L. kindti barošanās 3.2.2. Juvenīlo L. kindti…
Esteettisen teorian esteettinen teoria: Theodor Adornon dialektinen estetiikka
2012
Theodor W. Adornon (1903–1969) Esteettinen teoria ei ole teoria estetiikasta vaan pikemminkin teoria esteettisen kritiikin ehdoista ja mahdollisuuksista. Teoksen tavoitteena on asetella kysymys taiteen ja yhteiskunnan suhteesta alistamatta taidetta millekään ulkoiselle päämäärälle, mutta samalla typistämättä sitä vain itseensä viittaavaksi peliksi. Tavoite heijastelee Adornon filosofian tärkeää pyrkimystä säilyttää kohteen ensisijaisuus: tutkimuksen kohdetta ei tule pakottaa ennalta annettuun muottiin, vaan teorian on säilytettävä jatkuva itsereflektiivinen liike kohteen ja metodin välillä. peerReviewed