Fermentation Support Forum

I just watched a video which claimed that water kefir only digests the fructose in sucrose leaving behind the glucose.

This seems unlikely to me. It's not like sucrose is a simple compound that the cells can pick and choose which part to digest. The whole disaccharide probably has to be ingested. I also kind of doubt the combination of yeast and bacteria are all so picky. One of them must like glucose.

Lastly, I've tasted the ferment and it doesn't taste like sugar.

Now I could be wrong, so I thought I would ask. Has anyone else heard of this?

Water kefir does convert sucrose to fructose but the glucose concentration is pretty much continually decreasing for the first 72hrs after which there is very little carbohydrates left. See https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3993195/ for details/charts.

Thanks for this link, I had been wondering the same thing.