One of the comments on the last post about Fleischmann's yeast indicated some uncertainty regarding the e-mail I posted from ACH Food Companies. In particular the source of the yeast, or more specifically what it is derived from was in question. So I posed the question in a response e-mail to ACH Food Companies.
Below is their response.
"Thanks for your message.
Yeast organisms are naturally occurring in the air. Our yeast is the following genus and species: Saccharomyces Cerevisiae. It's grown at our Canadian facility on a mixture of molasses and corn syrup. The yeast cells ingest the corn syrup, but the corn protein is digested and therefore not intact in the finished yeast product and thus not an allergen.
I hope this information is useful - let us know if you have other questions.
ACH Food Companies, Inc."
Personally, I have used Fleischmann's Quick Rise Yeast and have not had any noticeable reactions, and will therefore continue to use it. Of course, others will have to make your own decisions on whether you feel that this is a safe gluten free product. I hope that the information I received and posted from ACH Food Companies may help you with this decision.