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From:
Esther Infanger <[log in to unmask]>
Reply To:
Esther Infanger <[log in to unmask]>
Date:
Tue, 21 Jan 2014 13:44:52 +0000
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Hi Susanne and Martine

Aren't all fatty acids organic acids? For me the difference is in the chain length. I'd only calculate the energy content with the fat-factor if the chain length is >4C.
For acetic acid I would use the factor for organic acids as it has a chain length of 2C.

Best wishes and have a nice day!
Esther

Esther Infanger
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Von: Food Composition Discussion Group [mailto:[log in to unmask]] Im Auftrag von Susanne Westenbrink
Gesendet: Dienstag, 21. Januar 2014 14:34
An: [log in to unmask]
Betreff: energy factor for acetic acid?

Dear all,

We have got a question concerning acetic acid.
In the EuroFIR thesaurus this acid is assigned to the organic acids, but with the synonym: fatty acid C2:0.
Our question is: how to deal with the energy calculation if a food, for instance vinegar, contains acetic acid. Is the amount of acetic acid multiplied by the energy factor for fat or for organic acids? Does any of you know more about the energy from acetic acid? And how did you deal with this in your food composition databases?

Kind regards,
Martine Jansen en Susanne Westenbrink


Susanne Westenbrink
Rijksinstituut voor Volksgezondheid en Milieu (RIVM) / National Institute for Public Health and the Environment
Centrum voor Voeding, Preventie en Zorg / Centre for Nutrition, Prevention and Health Services
PO Box 1
3720 BA Bilthoven
The Netherlands
tel:  +31 (0) 30 274 2448
fax: +31 (0) 30 274 4466
e-mail: [log in to unmask]<mailto:[log in to unmask]>
for more information on  the Dutch food composition database see
http://www.rivm.nl/nevo
http://nevo-online.rivm.nl<http://nevo-online.rivm.nl/>




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