Re: Is there caffeine in tumeric, guar gum, cellulose gum to name a few

The wikipedia page on caffeine is a good place to start: http://en.wikipedia.org/wiki/Caffeine

As the page notes, caffeine is found in varying quantities in the seeds, leaves, and fruit of some plants, where it acts as a natural pesticide.

The important point to keep in mind is that the levels of caffeine vary from species to species, and even from plant to plant within a species. Coffee has high levels compared to other plants, and tea also has relatively high levels, but generally not as high as coffee.

Both the CSPI (http://www.cspinet.org/new/cafchart.htm) and FDA ( http://www.fda.gov/downloads/Drugs/ResourcesForYou/Consumers/BuyingUsingMedicineSafely/U nderstandingOver-the-CounterMedicines/UCM205286.pdf) have published summaries of the caffeine content in various foods.

I could find no evidence that any of the foods you list have significant amounts of caffeine.