Subject: Will potassium bitartrate form an ester with a sugar?

A solution of sugar and water with some potassium bitartrate added is heated to
around 300°F.
The sugar can be almost any sugar, sucrose, glucose, fructose....
I know di- or polysaccharides will be splitted up because of the acid.

But will the COOH-group form an ester with the OH-group?

I made some experiments with monosaccharides (to avoid acid hydrolysis) and
tested the viscosity, which I think should increase, because the esters are
larger molecules than the acid and the sugar on their own.

Thanks already!
Julian

Re: Will potassium bitartrate form an ester with a sugar?