Alkylpyrazine

Alkylpyrazines are chemical compounds based on pyrazine with different substitution patterns. Some alkylpyrazines are naturally occurring highly aromatic substances which often have a very low odor threshold[1] and contribute to the taste and aroma of various foods including coffee and wines.[2] Alkylpyrazines are also formed during the cooking of some foods via Maillard reactions.[1]

Examples

2,3-Dimethylpyrazine

2,3-Dimethylpyrazine, a component of the aroma of roasted sesame seeds

2,5-Dimethylpyrazine

2,5-Dimethylpyrazine is used as flavor additive and odorant in foods such as cereals[3] and products such as cigarettes. It occurs naturally in asparagus, black or green tea, crispbread, malt, raw shrimp, soya, squid, Swiss cheeses, and wheat bread.[3]

The chemical formula is C6H8N2.[3]

2,6-Dimethylpyrazine

2,5-Dimethylpyrazine is also used as flavor additive and odorant in foods such as cereals[4] and products such as cigarettes. It occurs naturally in baked potato, black or green tea, crispbread, French fries, malt, peated malt, raw asparagus, roasted barley, roasted filberts or pecans, squid, wheat bread, wild rice (Zizania aquatica), and wort.[4]

The chemical formula is C6H8N2.[4]

See also

References

  1. 1 2 Susan M. Fors; Bertil K. Olofsson (1985). "Alkylpyrazines, volatiles formed in the Maillard reaction. I. Determination of odour detection thresholds and odour intensity functions by dynamic olfactometry". Chemical Senses. 10 (3): 287–296. doi:10.1093/chemse/10.3.287.
  2. ↑ Mihara, Satoru; Masuda, Hideki (1988). "Structure-odor relationships for disubstituted pyrazines". Journal of Agricultural and Food Chemistry. 36 (6): 1242–7. doi:10.1021/jf00084a029.
  3. 1 2 3 "2,5-DIMETHYLPYRAZINE". PubChem Compound Database; CID=31252. National Center for Biotechnology Information. Retrieved 2017-01-21.
  4. 1 2 3 "2,6-DIMETHYLPYRAZINE". PubChem Compound Database; CID=7938. National Center for Biotechnology Information. Retrieved 2017-01-21.


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