Results 51 to 60 of about 8,073 (152)

Componentes voláteis do café torrado. Parte I: compostos heterocíclicos Volatile components in roasted coffee. Part I: heterocyclic compounds

open access: yesQuímica Nova, 1999
A review of heterocyclic compounds in roasted coffee is presented. The contents, precursors and sensorial properties of furans, pyrroles, oxazoles, thiazoles, thiophenes, pyrazines and pyridines are discussed.
Carlos Alberto Bastos De Maria   +2 more
doaj   +1 more source

Characterization of odorant profiles and aroma characterization of vine tea (Ampelopsis grossedentata) using molecular sensory-omics

open access: yesFood Chemistry: X
The interest in vine tea and its extracts in the food industry has increased considerably due to its rich natural antioxidant dihydromyricetin and its non-toxic properties. Still, the strong herbal flavor makes it difficult for consumers to accept.
Xiao Hua Chen   +8 more
doaj   +1 more source

A S-cysteine conjugate, precursor of aroma of White Sauvignon

open access: yesOENO One, 1995
<p style="text-align: justify;">4-mercapto-4-methylpentan-2-one (4-MMP), a strongly odorant compound responsible for the « boxtree » or « broom plant » odour of the Sauvignon wines, can be enzymaticaly released <em>in vitro</em> from an odourless must extract.
Takatoshi Tominaga   +2 more
openaire   +3 more sources

Isolation of wine aroma precursors

open access: yes, 2013
Background and Aims Aroma precursors in grape juice include glycosylated terpenoids or benzenoids. The separation of these polar substances has been achieved by several chromatographic techniques but often after the esterification of the sugar hydroxyls.
Valeria Guantieri   +2 more
openaire   +1 more source

A Study on Tea Aroma Formation Mechanism: Alcoholic Aroma Precursor Amounts and Glycosidase Activity in Parts of the Tea Plant

open access: yesZeitschrift für Naturforschung C, 1995
We have shown in molecular basis that alcoholic tea aroma is mainly formed by endogenous enzymatic hydrolysis of glycosidic aroma precursors during manufacturing. Amounts of alcoholic aroma precursor and glycosidase activity in each part of the tea shoot ( Camellia sinensis var. sinensis cv Yabukita and a hybrid of var. assamica & var.
K, Ogawa   +5 more
openaire   +2 more sources

Maturation-Dependent Changes in Volatile Aroma Profile and β-Glucosidase Activity in Kozan Misket Orange (Citrus sinensis L.)

open access: yesMetabolites
Background/Objectives: Kozan Misket orange (Citrus sinensis L.) is a regional Turkish cultivar valued for its unique flavor, yet the mechanisms underlying its aroma development remain unclear.
Selin Yabacı Karaoğlan
doaj   +1 more source

Fruity/tropical sulfur aroma precursors in hybrid grapes

open access: yes, 2014
In the last century, several hybrid grape varieties were produced in order to overcome pest (phylloxera) and vine diseases, such as downy, powdery mildew. As they are not currently used to any significant extent either for wine-making in Europe, for technological and legal reasons (European Community Regulation, 1998) or for edible purposes, they are ...
Larcher, Roberto   +5 more
openaire   +2 more sources

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