Patent ID: 7169588

Claim:
Biosourced 1,3-propanediol produced by a process comprising the steps of: (i) contacting a medium containing at least one fermentable carbon substrate with a single microorganism to yield a culture medium, the at least one carbon substrate is glucose, or oligosaccharides and polysaccharides that contain glucose and not glycerol or dihydroxyacetone, and the single microorganism is selected from the group consisting of Klebsiella, Citrobacter , and Escherichia , transformed with a gene encoding a diol dehydratase enzyme or a glycerol dehydratase enzyme, (ii) incubating the culture medium of step (i) under suitable conditions to produce 1,3-propanediol; and (iii) recovering biosourced 1,3-propanediol from the culture medium wherein said biosourced 1,3-propanediol has a δ 13 C of −15.4 greater.