Re: ORGLIST:Tannin identification?

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From: ed.arruda$##$iff.com
Date: Fri Jun 04 2004 - 09:10:31 EDT

Previous message: Uno Mäeorg: "Re: ORGLIST:convert metoxy to hyroxyl"
Maybe in reply to: Buddy hi: "ORGLIST:Tannin identification?"

Hello,

I would like to suggest ferric ammonium sulfate solution. Added to tannic
acid forms a strong color change (dark black maybe blue in dilute
solutions.). This may work on other tannins. You may be able to develop a
colorometric method depending on the matrix.

Regards

E Arruda

Scientist
International Flavors and Fragrances R&D, Union Beach NJ. USA

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Previous message: Uno Mäeorg: "Re: ORGLIST:convert metoxy to hyroxyl"
Maybe in reply to: Buddy hi: "ORGLIST:Tannin identification?"

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