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US 4,040,906 AGranted
Method of producing carbon source for citric acid fermentation
AssigneeAjinomoto Co., Inc.
InventorsRyosuke Uchio, Kenji Kikuchi, Soichiro Asai, Kenichi Yarita
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Abstract
A sugar hydrolyzate, containing both glucose and fructose, is mixed with calcium hydroxide, and a fructose addition precipitate is recovered. The residual liquor is neutralized, calcium ions are removed, and then the liquor is used as a carbon source for citric acid fermentation. The present method may supply very inexpensive fructose to the market.
Claims5
In the fermentation production of citric acid wherein fermentation is effected by the use of a microorganism of the species Aspergillus niger or Aspergillus awamori, the improvement which comprises:
- admixing a substantially neutral hydrolyzate of juices of cane or beet, crude sugar, or molasses containing glucose and fructose cooled to below 10.degree. C. with calcium hydroxide to form a fructose addition product precipitate, and
- neutralizing the remaining mother liquor, simultaneously eliminating calcium ions therefrom, and utilizing the remaining liquor as the carbon source for said fermentation.
Dependencies are inferred from the claim text.