Xylitol has been in use (particularly in the EU) for some time as a low-calorie sugar substitute. It also has made its way into chewing gum as a way to inhibit Streptococcus mutans and inhibit biofilm anchoring/maturation. Perhaps it is this later characteristic that might make it helpful in the treatment of chronic wounds in general?
See this interesting small study by Garth James’ unit in Montana:
What if we could put this into an irrigant or an instillation technology?