Sugar – starch – and carbohydrates – Processes – Carbohydrate manufacture and refining
Patent
1989-06-13
1991-02-26
Pak, Chung K.
Sugar, starch, and carbohydrates
Processes
Carbohydrate manufacture and refining
127 55, 127 54, 127 53, 536127, 536115, 536119, C13D 300, C13D 316
Patent
active
049959115
ABSTRACT:
A process for recovering unreacted sucrose from a reaction mixture of sucrose and a fatty acid alkyl ester in an organic solvent as reaction medium in the presence of a catalyst in the production of a sucrose fatty acid ester which comprises adjusting the reaction mixture from which a part of the organic solvent as reaction medium may be previously removed and to which water is added, to a neutral pH region, adding a neutral salt and sucrose to the reaction mixture to precipitate the sucrose fatty acid ester, filtering off the precipitate, and bringing the filtrate into contact with a reverse osmosis membrane to recover the unreacted sucrose. According to the invention, unreacted sucrose can be easily recovered, while the sucrose fatty acid ester not contaminated with the organic solvent as reaction medium can be obtained from the reaction mixture without using an organic solvent for purification.
REFERENCES:
patent: 3792041 (1974-02-01), Yamagishi et al.
patent: 4611055 (1986-09-01), Yamamoto et al.
patent: 4710567 (1987-12-01), Kea et al.
patent: 4810787 (1989-03-01), Garvey et al.
Hatakawa Yoshio
Matsumoto Shusaku
Nakajima Akihiko
Dai-Ichi Kogyo Seiyaku Co. Ltd.
Pak Chung K.
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