Yeast cells can metabolise fructose or glucose into ethanol using the well know pathways of fermentation (brewing). However the fructans found in some plant materials, i.e. fructose-polymers, cannot be digested by yeast cells without first being hydrolysised (broken down) using enzymes such as fructanase, an expensive additive to the process.
This invention describes a novel yeast cell with capability to metabolise fructans into ethanol directly, simplifying the process, improving yield (by 25%) and reducing production costs.
Patent applications are pending.
Inventor: Steve Kelly