Process for preparing sucrose fatty acid ester powder

Details Process for preparing sucrose fatty acid ester powder Process for preparing sucrose fatty acid ester powder

1989-10-03

1991-02-26

Griffin, Ronald W.

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

Organic compounds

Carbohydrates or derivatives

536127, 536124, 536115, 536120, 536116, 514951, C07H 100, C07H 1300, C07H 1100

Patent

active

049963090

ABSTRACT:
A process for preparing sucrose fatty acid esters by reacting sucrose and a fatty acid alkyl ester in an aqueous reaction system in the presence of a catalyst, adding water to the reaction mixture to dissolve it, adjusting the reaction mixture to a neutral ph region, adding a neutral salt to the solution to precipitate the sucrose fatty acid esters, separating and washing the precipitate with an acidic water, and subjecting the washing liquid to ultrafiltration. The precipitate washed with the acidic water is spray-dried in the form of an aqueous slurry to give a dry powder of the sucrose esters having low HLB, and the concentrate obtained by ultrafiltration is spray-dried to form a dry powder of the sucrose esters having high HLB, and the liquid obtained by separating the precipitate is contacted with a reverse osmosis membrane to recover sucrose. According to the invention, purifed sucrose fatty acid esters can be obtained without using an organic solvent, while sucrose can be recovered in high yield.

REFERENCES:
patent: 3792041 (1970-10-01), Yamagishi
patent: 4898935 (1990-02-01), Nakamura et al.

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