Prevalence and Management of Alkyl-Methoxypyrazines in a Changing Climate: Viticultural and Oenological Considerations [PDF]
Biomolecules, 2021 Alkyl-methoxypyrazines are an important class of odor-active molecules that contribute green, ‘unripe’ characters to wine and are considered undesirable in most wine styles.
Gary J Pickering +2 more
exaly +8 more sources
Effect of 2,5-Dicarbonyl-3-Isobutyl-Piperazine on 3-Isobutyl-2-Methoxypyrazine Biosynthesis in Wine Grape [PDF]
Foods, 2023 The metabolic pathway of 3-alkyl-2-methoxypyrazines (MPs) in grape remains largely unclear except for the final step. In this study, the 2,5-dicarbonyl-3-isobutyl-piperazine (DCIP), which is proposed as the key intermediate of 3-isobutyl-2 ...
Yujuan Lei +5 more
doaj +2 more sources
Volatile Profiles and Sensory Characteristics of Cabernet Sauvignon Dry Red Wines in the Sub-Regions of the Eastern Foothills of Ningxia Helan Mountain in China [PDF]
Molecules, 2022 To elucidate the effects of the different terroir on wine aroma in six sub-regions of Eastern Foothills of Helan Mountain in Ningxia, a premium wine-producing region in China, 71 Cabernet Sauvignon wines were investigated by gas chromatography-mass ...
Xixian Song +6 more
doaj +2 more sources
Determination of methoxypyrazines in dry wines [PDF]
BIO Web of ConferencesThe quality of wine depends not only on the balance of volatile and non-volatile macro-components, but also on the content of micro-components contained in ng, such as methoxypyrazines.
Prakh A.V. +4 more
doaj +2 more sources
A Review of Ladybug Taint in Wine: Origins, Prevention, and Remediation [PDF]
Molecules, 2021 Ladybug taint (also known as ladybird taint) is a relatively recently recognized fault that has been identified in wines from a wide range of terroirs. Alkyl-methoxypyrazines—particularly 2-isopropyl-3-methoxypyrazine—have been determined as the causal ...
Gary J. Pickering, Andreea Botezatu
doaj +2 more sources
Effect of Agronomic Techniques on Aroma Composition of White Grapevines: A Review [PDF]
Agronomy, 2021 Climate change with rising temperatures and the unpredictability of rainy events during ripening leads to tough challenges for the winemakers in preserving the quality of white grape varieties.
Eleonora Cataldo +4 more
doaj +3 more sources
Modification of Sensory Expression of 3-Isobutyl-2-methoxypyrazine in Wines through Blending Technique [PDF]
Molecules, 2021 Sensory interactions exist between 3-alkyl-2-methoxypyrazines and various volatiles in wines. In this study, the binary blending of Cabernet Franc wines containing high levels of MPs and three monovarietal red wines with two proportions was conducted ...
Mengqi Ling +6 more
doaj +2 more sources
Chemical Properties of Mucilage Extracts from Cladodes of Opuntia ficus-indica (L.) Miller for Gel Formulation: Comparative Study with Pectin [PDF]
GelsMucilage extracted from cladodes of Opuntia ficus-indica (L.) Mill. has attracted growing interest as a natural food additive due to its gelling and nutritional properties. In this study, the chemical characteristics of Opuntia ficus-indica mucilage were
Federica Torregrossa +6 more
doaj +2 more sources
Determination of 2-methoxy-3-alkylpyrazines in wine by gas chromatography/mass spectrometry [PDF]
Bioscience, Biotechnology, and Biochemistry, 2015 2-Methoxy-3-alkylpyrazines have been isolated for the first time from a Sauvignon blanc wine by using a combination of distillation or headspace sampling and trapping by an ion-exchange resin.
Allen, M. S. +3 more
core +4 more sources
Fingerprinting of Green Arabica Coffee Volatile Organic Compounds (VOCs): HS-GC-IMS Versus GC × GC-MS [PDF]
International Journal of Food ScienceThis study compared two nontargeted analytical techniques—headspace gas chromatography–ion mobility spectrometry (HS-GC-IMS) and comprehensive two-dimensional gas chromatography–mass spectrometry (GC × GC-MS)—to fingerprint the volatile organic compounds
Matteo Bordiga +7 more
doaj +2 more sources