Methanol as Proportion of Ethanol
Purpose
Use this calculator to determine the proportion of methanol expressed as ethanol in g/L.
Background
Methanol is not a direct product of fermentation but is formed through the hydrolysis of pectin by naturally present enzymes in grapes. As pectin is primarily extracted from grape skins, red wines generally contain more methanol than white wines. Methanol is poisonous for human consumption. To ensure compliance, review results against the local appelation regulations for maximum permitted level of methanol concentration in wine, expressed as a proportion of the ethanol concentration or alcoholic strength.
REFERENCES:
- Measuring Sugar content in grape juice (1997), Concepts in Wine Chemistry by Yair Margalit, Ph.D. - (The wine Appreciation Guild);
- Methods for analysis of must and wines, by Amerine, M.A. (1980), (Wiley-Interscience New York);
This winemaking calculator is provided to you courtesy of NuVerge Canada Inc.
Disclaimer
Winemaker.Plus calculators purpose is to provide an alternative to user's current method(s). In making any additions or estimating winemaking data, we are strongly urging the user to respect all legislative requirements, follow regulatory health and safety protocols and make additions or estimate winemaking data based on number of sources including and not limited to supplier technical sheets, MSDS's and or local appellation resources. In no event shall Winemaker.Plus or its employees be liable for any direct or/and indirect loss and/or damage arising from the use or/and missuse of calculators in this progressive web application. Winemaker.Plus makes no representation, warranty, or claim that the information available in any of the calculators of this progressive web application is current or accurate. WinemakerPlus is not responsible for any errors or omissions in the resources or information contained in this progressive web application.