
Changes in Amounts of Possible Carcinogen Acetaldehyde in Wines over Time at Various Temperatures of Storage
A method to analyze carcinogenic acetaldehyde levels in wines was developed and its changes inlevels during storage under different conditions were determined. Levels of acetaldehyde were determined in various wine brands and monitored in selected wines stored under various conditions over prolonged periods using a GC/NPD. Levels of acetaldehyde in selected brand wines ranged from 2.22 ± 0.42 to 17.40 ± 4.16 µg/mL in organic white wines, from undetected to 1.60 ± 0.28 µg/mL in organic red wines, from 15.73 ± 1.18 µg/mL to 26.48 ± 4.01 µg/mL in conventional white wines and from 3.01 ± 0.41 to 20.05 ± 1.75 µg/mL in conventional redwines. When selected wines were stored at 6ºC, 28ºC and 40ºC over 120 days, generally, the levels of acetaldehyde increased for up-to 40 days and then decreased. Both white and red organic wines contained less acetaldehyde than conventional wines. In addition, red wines contain lower levels of acetaldehyde than white wines. There is still insufficient data to assess risk of acetaldehyde in wines. Detailed analyses of acetaldehyde in wines stored under different conditions is one avenue in assessing the safety of wine drinking.
Wang Q, Hengel M, and Shibamoto T*