Search results for "odor"
showing 10 items of 569 documents
Potent Aroma Compounds of Two Red Wine Vinegars
2000
Gas chromatography olfactometry (GCO) was used to determine key aroma compounds of two red wine vinegars. Sensory analysis was performed to choose the best neutralization agent of acetic acid (NaOH or MgO) and to test representativeness of four extracts obtained by different methods (dichloromethane extraction, XAD-2, mixture of XAD-2 and XAD-7, and Extrelut resins extraction). Neutralization with NaOH followed by dichloromethane extraction was selected to extract volatile compounds of vinegars. Key odorant compounds were determined by GCO based on detection frequency with 13 people. In the two red wine vinegars, 13 odors were perceived by at least 70% of the panelists, and 8 compounds amon…
Influence of composition(CO2 and Sugar) on aroma release and perception of mint-flavored carbonated beverages
2009
The aim of the present work was to identify and quantify physical mechanisms responsible for in-nose aroma release during the consumption of mint-flavored carbonated beverages in order to better understand how they are perceived. The effect of two composition factors (sugar and CO(2)) was investigated on both the sensory and physicochemical properties of drinks by studying in vitro and in vivo aroma release. Sensory results revealed that the presence of CO(2) increased aroma perception regardless of the sugar content. In agreement with volatility parameters, in vivo measurements showed that carbonated drinks released a greater quantity of aroma compounds in the nose space than non-carbonate…
Impact of Destroying the Structure of Model Gels on Volatile Release
2007
International audience; The release of a strawberry aroma from different composite gels taken as models of fruit preparations and from a sucrose solution was investigated. The composition of the model systems differed with regard to the gelling agent, either pectin or carrageenan, and to the rigidity of the gel. With the use of atmospheric pressure chemical ionization−mass spectrometry, the release profiles of the aroma compounds were determined under stirring. At the same time, purge and trap measurements were performed to determine the release profiles of the aroma compounds without stirring. The comparison of the patterns obtained using these two complementary methods made it possible to…
Addition of pasture plant essential oil in milk: Influence on chemical and sensory properties of milk and cheese
2007
The aim of this experiment was to study the effect of the addition, to milk, of an essential oil (EO) obtained from the hydrodistillation of plants collected from a mountain natural pasture on the milk and cheese sensory properties. The EO was mainly composed of terpenoid compounds (67 of the 95 compounds identified) as well as ketones, aldehydes, alcohols, esters, alkanes, and benzenic compounds. In milk, the addition of this EO at the concentration of 0.1 microL/L did not influence its sensory properties, whereas at 1.0 microL/L, sensory properties were modified. In cheeses, the effect of adding EO into milk was studied in an experimental dairy plant allowing the production of small Canta…
I commenti di Taleleo e Teodoro di Ermopoli a C. 2.4.29: un raffronto in tema di transazione
2021
Thalelaeus’ and Theodorus’ commentaries on a short rescript by Diocletianus and Maximianus give the author a chance to compare the teaching techniques of the antecessores and scholastikoi and also their different level of depth in the study of Justinianic law.
Mustialan maanviljelysopiston rakennettu ympäristö vuosina 1838-1920
2011
Tutkielmani käsittelee Suomen ensimmäisen käytännöllis-tietopuolisen maanviljelysoppilaitoksen rakennettua ympäristöä. Mustialan maanviljelysopisto perustettiin 1830-luvulla Suomen Talousseuran toimesta Tammelaan Kanta-Hämeeseen. Ensimmäiset oppilaat aloittivat opistossa opiskelun vuonna 1840. Vielä nykyäänkin Mustialassa voi opiskella maaseutuelinkeinojen koulutusohjelmassa. Nykyisin yli 50 rakennusta käsittävästä kokonaisuudesta rajaan tutkielmani käsittämään tiiviin rakennusryhmän, joka käsittää opisto- ja maatilapihan sekä navettapihan rakennukset. Näiden pihaneliöiden rakentumista seuraan vuosien 1838–1920 välisenä aikana. Tarkastelen Mustialan maanviljelysopistoa asettamalla sen kultt…
Effects of oenological tannins on aroma release and perception of oxidized and non-oxidized red wine: A dynamic real-time in-vivo study coupling sens…
2022
International audience; Addition of oenological tannins claims to have a positive impact on wine stability, protection from oxidation and likely sensory persistence. However, their role on red wine aroma during oxidation is controversial. The present study aims at investigating the effect of addition of oenological tannins on wine flavour (mainly aroma) before and after air exposure. Temporal Dominance of Sensations, a dynamic sensory evaluation, was coupled with a dynamic chemical measurement (nosespace analysis) using a Proton-Transfer-Reaction Mass-Spectrometer connected to the nasal cavity of 17 assessors. Results showed that the oxidation of a non-oaked Pinot Noir red wine decreases th…
Tots som fills de Llorente. El llorentinisme de Carles Salvador
2016
Teodor Llorente i Olivares (1836-1911) és un dels escriptors valencians que més interés va suscitar durant la primera meitat del segle XX. Així, varen ser múltiples els autors que, durant aquell període de temps, li dedicaren poemes i articles d’opinió, anàlisi i/o crítica. Entre aquests autors destaca Carles Salvador i Gimeno (1893-1955), que podem qualificar com un dels més insignes llorentinistes de tots els temps. Així, la seua vinculació envers el patriarca de la Renaixença valenciana va des de l’admiració lírica i l’estudi pregon i detallat de diversos aspectes bibliogràfics, fins a la preparació d’una antologia poètica que veié la llum, de manera pòstuma, en 1958. Així mateix, ben si…
El paisatge dels horts de tarongers vist pels escriptors valencians
2012
El corrent literari que arrancà a finals del segle XIX amb el moviment de la Renaixença, i es perllongà durant bona part del XX, evidencia com, històricament, el sentiment de pertinença al País Valencià ha sigut forjat, en gran part, per autors que han trobat en la contemplació del paisatge la seua font d’inspiració. Així, podem dir que el cant del paisatge autòcton ha estat un dels temes més recurrents de la literatura valenciana contemporània; i que l’ús social de la llengua ha perviscut, en gran mesura, gràcies a una producció literària molt lligada a la lloança i l’exaltació del paisatge productiu com a l’element més expressiu i material de la pàtria. És a dir, que la nostra tradició cu…
L'epistolari entre Teodor Llorente i Vicent W. Querol (1876-1889)
2012
L’estudi recupera trenta-set de les cartes que Teodor Llorente envià a Vicent W. Querol que havien romàs fins ara inèdites, que es donen a conéixer juntament amb les trenta-dues que Querol envià a Llorente i que ja varen ser publicades en el primer dels tres volums que integren l’Epistolari Llorente (1928). Així, el conjunt de les cartes proporciona nombrosa informació sobre qüestions personals i literàries que afecten tots dos escriptors, com ara: la participació de Querol com a president del consistori dels Jocs Florals de Barcelona de 1885; la traducció al castellà que junts van fer d’El Corsario, de Lord Byron; la dedicatòria que Llorente va fer a Querol de la seua traducció castellana …