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# Character-Impact Flavor Compounds in Cooked Flavors and Chocolate, Coffee, Caramelized Sugar Generated in Maillard Reaction Systems
- URL: https://www.flavorist.com/character-impact-flavor-compounds-in-cooked-flavors-and-chocolate-coffee-caramelized-sugar-generated-in-maillard-reaction-systems/
- Published: 2025-10-09T22:05:18.000Z
- Updated: 2025-10-09T22:07:32.000Z
- Author: Editor

Occurrence \*\*\* Character-impact compounds

Chocolate \*\*\* 5-Methyl-2-phenyl-2-hexenal/2-Methoxy-5-methyl-pyrazine/iso-Amyl phenylacetate  
Coffee/Wine (barrel-aged) \*\*\* 2-Furfurylthiol  
Coffee (mocha) \*\*\* Furfuryl methyl disulfide  
Wine (barrel-aged) \*\*\* 2-Methyl-3-furanthiol  
Fruity, burnt sugar (strawberry) \*\*\* Furaneol  
Brown sugar \*\*\* Sotolon  
Honey \*\*\* Phenylacetaldehyde  
Malt \*\*\* 3-Methylbutanal  
Cotton candy \*\*\* Maltol  
Caramel, sweet \*\*\* Ethyl maltol  
Maple \*\*\* 2-Hydroxy-3-methyl-2-cyclopenten-1-one  
Cracker (saltine) \*\*\* 2-Acetyl-1,4,5,6-tetrahydropyridine  
Oat flake \*\*\* (E,E,Z)-2,4,6-Nonatrienal  
Popcorn \*\*\* 2-Acetylpyrazine / 2-Propionyl-1-pyrroline / 2-Acetyl-1-pyrroline / 2-Acetyl-1,4,5,6-tetra-hydropyridine  
Roasty, popcorn \*\*\* 2-Acetyl-2-thiazoline \[22926-41-8\] 97  
Popcorn (model system) \*\*\* 3-Thiazolidineethanethiol / 5-Acetyl-2,3-dihydro1,4-thiazine  
Wheat bread crust /Rice (basmati) \*\*\* 2-Acetyl-1-pyrroline \[85213-22-5\] 86, 88  
Potato chip \*\*\* 2-Ethyl-3,5-dimethyl-5-pyrazine  
Potato chip \*\*\* 2,3-Diethy-5-methyl-pyrazine  
Roasted potato \*\*\* 2-Vinylpyrazine  
Roasted potato \*\*\* (Z)-2-propenyl-3,5-dimethylpyrazine  
Smoky \*\*\* Guaiacol / 4-Vinylguaiacol

*Note: Some compounds generated in Maillard reaction systems may not be readily available in the market. Fortunately, Maillard reaction can be carried out and the reaction flavors with the desired character-impact flavor compounds may be used to provide some desired flavor note such as cracker, chocolate, cabbage, potato, popcorn, brown, sweet flavor notes.*

The content is extracted from a book chapter authored by [Dr. Robert MC Gorrin, professor of Oregon State University at Corvallis, Oregon. ](https://foodsci.oregonstate.edu/users/robert-mc-gorrin?ref=flavorist.com)It is highly recommended that interested readers refer to the chapter and or the book.

[Reference: Mc Gorrin, R. J. (2012). Character-impact Flavor and Off-Flavor Compounds in Foods. In R. Marsili (Ed.), Flavor, Fragrance, and Odor Analysis, Second Edition (pp. 207–262). CRC Press.](https://www.routledge.com/Flavor-Fragrance-and-Odor-Analysis/Marsili/p/book/9780429109072?ref=flavorist.com)