Process for the production of a fermentation starting material
AssigneeAjinomoto Co., Inc.
InventorsHideyuki Morimoto, Masaru Saeki, Tetsuya Kawakita
Life of this patent
Estimating the term…
Abstract
A process for the production of a fermentation starting material from cane molasses which comprises: inverting most of the sugar contained in cane molasses either enzymatically with invertase or with a mineral acid, passing the cane molasses containing invert sugar through a column containing a cation exchange resin, eluting invert sugar from the resin with water (pH 5-8), and obtaining an eluate fraction containing the invert sugar to be used as a carbon source for the production of L-glutamic acid by a fermentation technique.
Claims11
A process for the production of L-glutamic acid by fermentation, which comprises growing an L-glutamic-acid-producing microorganism in a fermentation medium containing as a carbon source a treated molasses product produced by a process which comprises a step (1) of adding an invertase or a mineral acid to cane molasses and keeping said cane molasses to which the invertase or the mineral acid has been added at a temperature and a pH suitable for inversion for a time required for almost all the amount of the sugar contained in said cane molasses to be inverted, a step (2) of passing said cane molasses treated with the invertase or the mineral acid after the step (1) through a column packed with a cation form cation exchange resin and subsequently passaging water having a pH in the range of 5-8 in an amount enough to elute 97% or more of the invert sugar through said resin column, and a step (3) of obtaining an eluate fraction containing the invert sugar after the step (2) as the carbon source.
Dependencies are inferred from the claim text.