Process for isolating and recovering erthritol from culture medium containing the same
AssigneesMitsubishi Kasei Corporation, Nikken Chemicals Co., Ltd.
InventorsToshihiro Maeda, Isao Nakazawa, Takashi Kombu
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Abstract
A process for readily isolating and recovering highly pure erythritol at a high crystallization yield from an erythritol-containing culture medium, which contains erythritol together with various impurities such as salts, coloring materials and polysaccharides, through chromatographic separation with the use of a strongly acidic cation exchange resin. The process of the present invention can be continuously operated, since the lowered separation capability of said cation exchange resin can be readily restored by treating the same with a warm alkali solution.
Claims7
A process for isolating and recovering erythritol from an erythritol-containing culture medium, which comprises culturing an erythritol-producing bacterium in an aqueous medium under aerobic conditions;
- removing the cells from the culture medium;
- passing the supernatant thus obtained through a separation column packed with an alkali metal or ammonium type strongly acidic cation exchange resin;
- eluting the same with water;
- collecting a fraction containing .erythritol as the main component from the resulting eluate;
- and recovering the object erythritol from said fraction.
Dependencies are inferred from the claim text.