Abstract
Gas chromatography provided an accurate method for quick and precise analysis of acetic acid in wines. The complete separation of acetic acid from ethanol without `tailing' or 'ghosting' was accomplished by column choice and by saturation of the nitrogen carrier gas with formic acid vapor. A column packed with Carbopack B coated with Carbowax 20M as the liquid phase was used. l-Pentanol (n-Amyl alcohol), normally not found in wine, was used as the internal standard. Good correlation was observed when comparing GC acetic acid values with the conventional steam distillation method. The accuracy of the GC method was ± 1.2 % at the 0.04 g/100 mL acetic acid concentration level. The standard deviation for the most complex wine analyzed (red wine) was ± 0.0007 g/100 mL.
- Received June 1981.
- Revision received December 1981.
- Accepted December 1981.
- Published online January 1982
- Copyright 1982 by the American Society for Enology and Viticulture
Sign in for ASEV members
ASEV Members, please sign in at ASEV to access the journal online.
Sign in for Institutional and Non-member Subscribers
Log in using your username and password
Pay Per Article - You may access this article (from the computer you are currently using) for 2 day for US$10.00
Regain Access - You can regain access to a recent Pay per Article purchase if your access period has not yet expired.