Results 41 to 50 of about 7,205 (166)

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

Biotechnologie, 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., Gros, J., Collin, S.   +2 more
doaj  

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

Foods
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, Siman Zheng, Liuxi Chen, Juan Wang, Hongqin Liu, Jinglin Zhang, Mingquan Huang, Jihong Wu, Dongrui Zhao, Jinchen Li   +9 more
doaj   +1 more source

Sharing of Pyrazine Semiochemicals between Genera of Sexually Deceptive Orchids

Natural Product Communications, 2013
It has recently been discovered that novel di-, tri- and tetra- substituted pyrazines are semiochemicals in Drakaea , an orchid genus that secures pollination by the sexual deception of male thynnine wasps.
Bjorn Bohman, Ryan D. Phillips, Gavin Flematti, Rod Peakall, Russell A. Barrow   +4 more
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Pyrazines Attract Catocheilus Thynnine Wasps

Insects, 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

Changes of pyrazines, physicochemical indicators and microbial community of fermented grains during stacking fermentation of sauce-flavor Baijiu and correlation analysis [PDF]

Zhongguo niangzao
In order to explore the formation rules of pyrazines in fermented grains during the stacking fermentation of sauce-flavor (Jiangxiangxing) Baijiu, the changes in pyrazines, microbial communities and physicochemical indicators in fermented grains during ...
LONG Yafei, RAO Wei, TANG Lin, ZHONG Yuan, DUAN Qijun, LONG Shenggang, WU Baolin, ZHANG Qihang, LI Lihong*
doaj   +1 more source

Biobased pyrazines

, 2022
Curiosity and sustainable development go hand in hand to help with the major problems of our time. This thesis shows how curiosity driven research can result in new insights. The thesis describes the development new building blocks from biomass, which have never been used in materials before, and their subsequent use in plastics.
openaire   +2 more sources

GC–MS analysis of alkylpyrazines in the pyrolysis oils of silica-polyethylenimine CO2 sorbents

Journal of Chromatography Open
Solid sorbents based on silica and polyethyleneimine (PEI) are intensively investigated in the field of carbon capture and storage (CCS). Pyrolysis was proposed as a thermal process to recover the pure silica from exhausted sorbents and convert PEI into ...
Irene Coralli, Lorenzo Spada, Daniele Fabbri, Seyedeh Rojin Sahriati Pour, Jessica Fiori, Ivano Vassura, Stelios Stefanidis, Angelos Lappas, Lee A. Stevens, Colin E. Snape   +9 more
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Simultaneous determination of 19 pyrazines and furans compounds in vintage sauce-flavor Baijiu by GC-MS/MS [PDF]

Zhongguo niangzao
Based on gas chromatography-triple quadrupole tandem mass spectrometry (GC-MS/MS), a method for simultaneous determination of 19 pyrazines and furans compounds in vintage sauce-flavor (Jiangxiangxing) Baijiu was established, and the contents of pyrazines
CHEN Yan, WANG Xiaoyan, LIU Chong, YANG Sha, ZHANG Ji
doaj   +1 more source

Volatile profiling from thermal decomposition of Amadori compounds in the alanine-glucose Maillard reaction: An DFT insight of 3-ethyl-2,5-dimethylpyrazine forming mechanism

Food Chemistry: X
The composition of volatile compounds generated by the thermal decomposition of Amadori rearrangement products (ARPs) in the Maillard reaction between glucose and alanine was investigated by using a combination of thermal desorption cryo-trapping system ...
Pengxun Gao, Shang Wang, Baomin Feng, Chunying Liu, Yi Wang, Shaohua Dou, Liang Dong   +6 more
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5-Aminopyrazole Dimerization: Cu-Promoted Switchable Synthesis of Pyrazole-Fused Pyridazines and Pyrazines via Direct Coupling of C-H/N-H, C-H/C-H, and N-H/N-H Bonds

Molecules
A Cu-promoted highly chemoselective dimerization of 5-aminopyrazoles to produce pyrazole-fused pyridazines and pyrazines is reported. The protocol generates switchable products via the direct coupling of C-H/N-H, C-H/C-H and N-H/N-H bonds, with the ...
Yi-Xin Chai, Jun-Jie Ren, Yi-Ming Li, Yi-Cheng Bai, Qing-Qing Zhang, Yi-Zhen Zhao, Xue Yang, Xiao-Han Zhang, Xin-Shuang Zhang, An-Xin Wu, Yan-Ping Zhu, Yuan-Yuan Sun   +11 more
doaj   +1 more source