Pyrazine is a heterocyclic aromatic organic compound with the chemical formula C4H4N2. It is a symmetrical molecule with point group D2h. Pyrazine is less basic than pyridine, pyridazine and pyrimidine. 22047-25-2, formula is C6H6N2O, Name is Acetylpyrazine. It is a deliquescent crystal or wax-like solid with a pungent, sweet, corn-like, nutty odour. Reference of 22047-25-2.
Cincotta, Fabrizio;Tripodi, Gianluca;Merlino, Maria;Verzera, Antonella;Condurso, Concetta research published 《 Variety and shelf-life of coffee packaged in capsules》, the research content is summarized as follows. The research evaluated the influence of the variety on the shelf-life of coffee packaged in capsules for a proper indication of the min. durability date. Single serve coffee capsules of Arabica and Robusta varieties were analyzed at specific intervals up to 24 mo of storage. Variations in volatile fraction, aroma compounds and oxidation products have been studied by SPME-GC-MS. The evaluation of the consumer acceptability was carried out, too. A large number of compounds have been identified: acids, aldehydes, esters, furans, alcs., aromatic hydrocarbons, ketones, lactones, phenolic compounds, pyrazines, pyridines, pyrroles, sulfur compounds and terpenes. Differences in composition noted between the two varieties. Exactly, a higher amount of pyrazine and furan derivatives characterized the Robusta and Arabica variety, resp. The study evidenced changes in volatiles during the shelf-life in relation to the coffee variety. Higher stability of Arabica than Robusta coffee was also supported by the consumer sensory data. In conclusion, the research evidenced the importance of considering the variety for the shelf-life definition of coffee packaged in capsules.
Reference of 22047-25-2, 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.