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Does Distillation Remove All Gluten?

Frederik Willem Janssen is head of the Chemistry Department, Food Inspection Service in Zutphen, and a subsidiary of the Inspector of Health Protection (similar to the FDA in America). Their lab has a special interest in.... modified gluten, edible packaging materials (which may contain gluten), and detection of hidden gluten in foods, including the development of improved detection methods. He is also a member of the Medical/Scientific Advisory Committee of the Dutch Celiac Society.

Distillation quite effectively removes the gluten and it is very unlikely that splashes of fermented (we call it "moutwijn", i.e. malt wine, can’t remember the correct English word for it) will be carried over to the final distillate. If they are present they must have been added afterwards. A couple of years ago we analyzed some distilled liquor for presence of gluten proteins but we couldn’t detect any in this set (about 40 different types). The beer test, which consisted of a set of 50 different brands, showed that most brands (35) did contain immunoreactive protein in amounts between 1 and 200 mg/liter. Only 15 contained less than 1 mg/liter. There was a strong correlation between the gluten content and whether wheat had been used as an ingredient!

I found a report in a periodical by the Flemish Celiac Society of an investigation that was published in 1992 about immunological determination of gluten in beer and some distilled liquor. This confirmed our findings that the gluten content of beer is quite variable (the authors found levels from zero to 400 mg /liter gluten).

They did find gluten in distilled liquor! The levels varied from zero to 200-mg gluten/liter. The highest amount was found in a "Creme de Framboise" (200 mg/liter) but second was a French brandy VSOP with a score of 180 m g/liter. A Dutch gin was negative, which might be an indication that gluten in these type of liquor is not a carry over to the distillate! My guess is that this gluten is derived from the caramel coloring, though there is no proof about this yet. I always advise sensitive patients to abstain from brown colored liquor!

I would like to stress that the determination of gluten in these types of products is very unreliable and we have to count with false positive as well as false negative values. The gluten proteins could have been broken down to small (but still toxic) peptides and in that case a sandwich-type ELISA might produce false negative results because in that case you always need to two epitopes (binding sites for the antiserum) on one molecule to get a positive reaction. A competitive type assay would be the choice for this type of product, but we haven’t tried this type of analysis yet. We did use it on a soy sauce, which was prepared with wheat gluten and didn’t find any gliadin, which might be an indication that gluten had been broken down to very small peptides with less than one binding site.

Best wishes,
Frederik Willem Janssen, Zutpen, The Netherlands. 

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6 Responses:

 
Suz
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said this on
18 Dec 2007 7:05:20 PM PST
helpful...thanks.

 
Pam
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said this on
19 Jan 2008 7:33:13 AM PST
This still leaves me wondering if the grain alcohol in Pam Spray or any other product such as Vanilla, Allmond extracts contain gluten.
Can you Help!!!!! Thank you Pam

 
Sonya
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said this on
20 Nov 2010 6:36:03 AM PST
I'd like to hear the answer to Pam's question, too. (on 19 Jan 2008). Thanks

 
Donald Edgar
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said this on
03 Aug 2012 4:16:06 PM PST
References would be useful.

 
Amanda
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said this on
04 Oct 2012 8:53:37 PM PST
I do not risk consuming anything that was once wheat or still is. I have drank many types of alcohol and have had the same painful wheat symptoms. My grandmother said to me once, "You do not need alcohol to have a good time!"

 
Joe
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said this on
28 Dec 2013 8:23:06 PM PST
There is zero doubt in my mind that cheap alcohol distilled from grain still contains some amount of gluten. I get terrible and immediate reactions.




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