Results 51 to 60 of about 7,564 (224)

Research Progress of Pyrazines in Baijiu [PDF]

open access: yesZhongguo niangzao
Pyrazines are an important class of nitrogen-containing heterocyclic flavor compounds, which contribute greatly to the aroma and quality of Baijiu, particularly sauce-flavor (Jiangxiangxing), sesame-flavor (Zhimaxiangxing) and blended-flavor ...
DU Jiawei, LIU Jiahuan, JIANG Sha, NING Zhenzhen, ZHANG Yang, NI Xingting, LI Qiang, YANG Qiang
doaj   +1 more source

Complexes of Uranium and Thorium with Pyrazine and Pyrazine Amides

open access: yes, 1981
Chemistry Division, Bhabha. Atomic Research Centre, Trombay, Bombay-400 085 Manuscript received 30 October 1978, revised 28 August 1980, accepted 28 January 1981 Reactions of uranium tetrachloride, uranyl nitrate and thorium nitrate with pyrazine (Pyz), pyrazine 2-carboxamide (Pyza) and pyrazine 2, 3-dicarboxamide (Pyzda) have been carried out to study
S. C. JAIN, M. S. GILL, G. S. RAO
openaire   +2 more sources

Simultaneous Determination of 20 Pyrazines in Baijiu by Gas Chromatography-Tandem Mass Spectrometry [PDF]

open access: yesShipin Kexue
In this study, a method for the simultaneous determination of 20 pyrazines in baijiu was established by direct injection (DI) combined with gas chromatography-tandem mass spectrometry (GC-MS/MS), and the pyrazines in 10 brands of baijiu with different ...
WANG Na, SHEN Yi, ZHUANG Yuan, CHENG Wei, LUO Sen, ZHANG Yadong, LIU Zixuan, LIU Bing, GAO Hongbo
doaj   +1 more source

Bifunktionale Cosubstrate ermöglichen Threonin‐Dehydrogenase katalysierte chemoenzymatische Pyrrolsynthese

open access: yesAngewandte Chemie, EarlyView.
Klassische Knorr‐Chemie trifft auf moderne Biokatalyse. Die Threonindehydrogenase erzeugt aus l‐Threonin Aminoaceton, welches direkt in einer chemoenzymatischen Knorr‐Pyrrolsynthese abgefangen wird. Ein bifunktionales β‐Dicarbonylsubstrat dient sowohl als Pyrrolbaustein als auch als Hydridakzeptor für integrierte NAD+‐Recyclierung und ermöglicht die ...
Valentina Jurkaš   +8 more
wiley   +1 more source

Effect of a New Natural Seasoning on the Formation of Pyrazines in Barbecued Beef Patties

open access: yesJournal of Chemistry, 2016
The formation of pyrazines in food cooking is required to obtain satisfactory “roasted” flavor. The aim of this work was to evaluate the effect of a new red wine pomace seasoning (RWPS) on the formation of pyrazines in barbecued beef patties.
Javier García-Lomillo   +4 more
doaj   +1 more source

Simultaneous detection of 12 pyrazines in Guizhou sauce-flavor Baijiu by SPE-GC-MS/MS [PDF]

open access: yesZhongguo niangzao
A method was established for the simultaneous determination of 12 pyrazines in Guizhou sauce-flavor (Jiangxiangxing) Baijiu by solid phase extraction (SPE) pretreatment combined with gas chromatography-tandem mass spectrometry (GC-MS/MS).
YANG Jinchuan, HANG Jialing, BAI Xuemei, ZHANG Jimin
doaj   +1 more source

Revue sur les analogies et les différences relevées entre un cône de houblon et une baie de raisin : arômes soufrés et azotés

open access: yesBiotechnologie, Agronomie, Société et Environnement, 2017
Similarities and differences between hop cones and grape berries: sulfur and nitrogen aromas. A review. Introduction. Similarities can be found between the flavors of hop cones and grapes.
Kankolongo Cibaka, ML.   +2 more
doaj  

Pyrazines Attract Catocheilus Thynnine Wasps

open access: yesInsects, 2014
Five previously identified semiochemicals from the sexually deceptive Western Australian hammer orchid Drakaea livida, all showing electrophysiological activity in gas chromatography–electroantennogram detection (EAD) studies, were tested in field ...
Bjorn Bohman, Rod Peakall
doaj   +1 more source

Dual‐Function Cosubstrates Enable Threonine Dehydrogenase‐Driven Chemoenzymatic Pyrrole Synthesis

open access: yesAngewandte Chemie International Edition, EarlyView.
Classical Knorr chemistry meets contemporary biocatalysis. Threonine dehydrogenase generates aminoacetone from l‐threonine, which is directly intercepted in a chemoenzymatic Knorr pyrrole synthesis. A dual‐function β‐dicarbonyl substrate serves as both pyrrole precursor and hydride acceptor for integrated NAD+ recycling, affording substituted pyrroles ...
Valentina Jurkaš   +8 more
wiley   +1 more source

Characterization of Key Odorants in Jimo Huangjiu Using a Characteristic Aroma-Directed Screening Strategy

open access: yesFoods
Jimo Huangjiu (JMHJ), a Chinese geographical indication product from Shandong Province, is characterized by distinctive burnt-like and smoky aromas. However, the specific odorants responsible for these sensory attributes remain uncharacterized.
Hongtao Yu   +9 more
doaj   +1 more source

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