Method of isolating 1,3-propanediol or 1,3-propanediol and...

Details Method of isolating 1,3-propanediol or 1,3-propanediol and... Method of isolating 1,3-propanediol or 1,3-propanediol and...

2005-09-01

2009-02-10

Price, Elvis O (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

Reexamination Certificate

active

07488855

ABSTRACT:
A method of isolating 1,3-propanediol from a solution containing 1,3-propanediol, 1,2-propanediol, glycerol, and glucose is provided. The method includes: obtaining a concentrate by concentrating the solution via reduced pressure evaporation; dissolving the concentrate in a solvent selected from the group consisting of ethyl acetate, methyl ethyl ketone, and a mixture thereof and leaving the solution alone to fractionate the compounds in a solvent layer and a water layer; and loading the solvent layer in a silica-filled column under a low pressure liquid chromatography condition and eluting the solvent layer with a mixed solvent of methanol and at least one solvent which is miscible with methanol and has a polarity lower than methanol.

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Beibl et al, “Fermentation of glycerol to 1,3-propanediol: use of cosubstrates,” 1995, vol. 44, pp. 15-19.

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