Pyrazine is an N-heterocyclic moiety, and it can be easily prepared from ethylenediamine and 1,2-diketone, α-hydroxyketone, α-methyl ketone. 22047-25-2, formula is C6H6N2O, Name is Acetylpyrazine. Many methods exist for the organic synthesis of pyrazine and its derivatives. Some of these are among the oldest synthesis reactions still in use. Formula: C6H6N2O.
Sulewska, Anna Maria;Larsen, Flemming Hofmann;Soerensen, Jakob Kryger;Pedersen, Anders Holmen research published 《 Advanced instrumental characterization of the coffee extracts produced by pilot scale instant coffee process》, the research content is summarized as follows. Coffee, with production exceeding 10.3 million tonnes in 2018, is one of the most widespread commodities consumed world-wide. One of the increasingly popular coffee products is instant coffee, with consumption exceeding 1.6 million tonnes in 2017. In this work, we present how the combination of 1H NMR and GC-MS allows the characterization of samples from the small pilot-scale instant coffee process. Results were compared with measurements for filter coffee made from the same coffee beans to better evaluate the effects of processing. In the coffee extracted at lower temperatures, a higher concentration of aroma compounds can be detected. This is particularly the case for compounds responsible for earthy (pyrazines) and woody (guaiacols) aroma notes. Also, for the coffee extracted at the highest temperature, a higher level of cyclotene giving undesired burnt and bready aroma is seen. The caffeine content in instant coffees was lower than in the filter coffee (49 ± 13 up to 62 ± 5 mg/100 mL brew for instant compared with 84 ± 15 mg/100 mL brew for filter coffee). The same was observed for acetic acid, while the concentrations of citric and quinic acids are lower in the filter coffee than in the reconstituted instant coffee.
Formula: C6H6N2O, 2-Acetylpyrazine has been identified as one of the volatile flavor constituents in popcorn, wheat and rye bread crust.
2-Acetylpyrazine, also known as 1-pyrazinylethanone or fema 3126, belongs to the class of organic compounds known as aryl alkyl ketones. These are ketones have the generic structure RC(=O)R’, where R = aryl group and R’=alkyl group. 2-Acetylpyrazine exists as a solid, soluble (in water), and a very weakly acidic compound (based on its pKa). Within the cell, 2-acetylpyrazine is primarily located in the cytoplasm. 2-Acetylpyrazine has a bitter, bread crust, and chip taste.
2-acetylpyrazine is a pyrazine that is substituted by an acetyl group at position 2. It has been identified as one of the volatile flavor constituents in popcorn, bread crust, vinegar, and potato snacks. It has a role as a flavouring agent. It is an aromatic ketone and a member of pyrazines.
2-Acetylpyrazine is a nitrogen containing compound that has been used in biological studies. 2-Acetylpyrazine has been shown to have inhibitory properties against the growth of prostate cancer cells and other cell lines. It also inhibits the production of fatty acids and epidermal growth factor, which are important for cellular proliferation. The inhibition is due to the photochemical properties of 2-acetylpyrazine, which cause the formation of reactive species that react with biological molecules. The reactive species may be generated by either a reaction mechanism or a reaction pathway that involve coordination geometry. 2-acetylpyrazine has also been used as a fluorescence probe for fatty acid detection in lipid bilayers and liposomes., 22047-25-2.