Re: gum preservatves
FDA allows E211 in food unless concentration doesn't get over 0.1%. That's
why I'm thinking of reducing the amnt. in my next batch.
I first mix sodium benzoate then add gum, therefore it's also preserved
during time taking (at least 12 hours) dissolution process too.
Speculation alert: I'm not sure but I remember reading something like
"acidic gum is faster" (please correct me if I'm wrong), so maybe waiting
a little and adding preservative just before gum starts to rot could be
better. (Again, if I'm not mistaking gum gets more and more acidic as it
What do you think?
4 Eylül 2008, Perşembe, 11:29 am tarihinde, Guido Ceuppens yazmış:
> The importer of the powdered gum I use once sugested "one teaspoon sod
> benzoate" per 100 grs of powder as a preservative. I have, since then,
> 2,5 grs sodium benzoate per 100 grs dry powder and the gum, once
> indeed lasts certainly at least for 2 years. Sodium benzoate is a food
> preservative (E211) and might (?) be less toxic than alternatives.
> 2008/9/4 Loris Medici <firstname.lastname@example.org>
>> I guess most people use thymol nowadays.
>> Just for the record: I opted for sodium benzoate - because it was
>> / easier to obtain than thymol. I use it generously; about 1g per 100g
>> gum (Probably overkill. But it's easier to weight 1g in place of dealing
>> with fractions...) and it preserves the gum pretty nicely with no
>> effect to my printing. (No problems even after 2 years.) Will reduce the
>> amnt. (tenfolds!) to 1g per 1000g of gum in the next batch (soon).