Method for obtaining a vegetable plant protein fraction, in...

A - Human Necessities – 23 – G

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A23G 9/38 (2006.01) A23J 1/00 (2006.01) A23L 1/035 (2006.01)

Patent

CA 2634350

The invention relates to a method for obtaining a vegetable protein fraction, in particular for producing vegetable ice cream, wherein vegetable parts are added to water or to an aqueous solution in order to detach and/or disperse vegetable proteins from the vegetable parts. According to the invention, one or several vegetable protein fractions are separated from the obtained aqueous mixture according to a separation method. According to said method, one or several substances having lipophilic or amphiphilic bordering surfaces are added to the mixture in order to separate one or several vegetable protein fractions. The detached and/or dispersed proteins having lipophilic or amphiphilic groups in the mixture are attached to said substances. Said substances comprising the attached proteins are separated from the mixture. Due to said invention, a vegetable protein fraction having particularly good emulsifying characteristics is obtained, said protein fraction being advantageous as an emulsifier in the production of vegetable ice cream.

L'invention concerne un procédé pour obtenir une fraction de protéine végétale, notamment pour confectionner une crème glacée végétale, procédé selon lequel des fragments végétaux sont mélangés à de l'eau ou à un solvant aqueux pour détacher et/ou disperser des protéines végétales de ces fragments végétaux. Selon le procédé, une ou plusieurs fractions de protéine végétale sont séparées au moyen d'un procédé de séparation du mélange aqueux obtenu. Selon l'invention, pour séparer la ou les fractions de protéine végétale, une ou plusieurs substances à interfaces lipophiles ou amphiphiles sont introduites dans le mélange, et les protéines à groupes lipophiles ou amphiphiles qui ont été séparées et/ou dispersées dans le mélange se fixent sur ces substances. Lesdites substances, avec les protéines ainsi fixées, sont alors séparées du mélange. Le procédé de l'invention permet d'obtenir une fraction de protéine végétale présentant des propriétés émulsifiantes particulièrement bonnes, cette fraction de protéine étant particulièrement adaptée comme émulsifiant lors de la confection de crème glacée végétale.

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