2-aminoacetophenone

1.25 mg per capsule

“Grape-like, like lime blossom or putty”

Certified wine flavour standard used to train professional tasters to recognize and scale the intensity of grape-like character. Aminoacetophenone is a character contributed through use of certain grape varieties. It can also be formed in wine from the amino acid tryptophan during a phenomenon known as atypical ageing. This compound imparts a fruity, grape-like odour, reminiscent of putty and taco shells depending on the concentration.

Food grade | free from sensory impurities | extensively tested | safe to smell and taste.

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Flavour standard information

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Technical specification

Assessment

The best way to detect grape-like characters in wine is as follows. Cover the sample with your hand and swirl the glass to release the aroma. Remove your hand and take a single long sniff. Repeat as necessary.

Amount of flavour per capsule

1.25 mg per capsule

Threshold

The flavour threshold of 2-aminoacetophenone in wine is 1 - 40 µg / l.

Origins

2-Aminoacetophenone is a varietal character contributed through use of certain grape varieties (e.g. Vitis labsrusca). It is also formed from tryptophan present in wine. 2-Aminoacetophenone is associated with ageing of wine in the absence of lees, and use of new barrels.

Importance

2-Aminoacetophenone imparts a fruity, grape-like odour to wine, reminiscent of lime blossom, putty and taco shells depending on the concentration. It is associated with the atypical (premature) ageing of white wine - in such cases it t is often found together with sotolon. The key drivers of this fault are not fully understood though vine stress during drought conditions is known to be involved.

CAS registry number

The CAS registry number of 2-aminoacetophenone is 551-93-9.

Other names

1-(2-aminophenyl)ethanone
2-acetyl analine
ortho- acetyl aniline
2-acetyl phenyl amine
ortho-aminoacetophenone
ortho-aminoacetyl benzene
2-aminophenyl methyl ketone
ortho-aminophenyl methyl ketone
1-(2-aminophenyl) ethanone
1-(2-aminophenyl)ethanone

Remarks

When contributed to wine as a varietal character, 2-aminoacetophenone occurs together with methyl anthranilate to impart a distinctive fruity (foxy) character.

Threshold distribution