C - Chemistry – Metallurgy – 12 – P
Patent
C - Chemistry, Metallurgy
12
P
C12P 19/04 (2006.01) A23K 1/14 (2006.01) A23L 1/0522 (2006.01) A23L 1/09 (2006.01) C08B 30/04 (2006.01)
Patent
CA 2191894
The subject of the invention is a method for preparing fine-granuled starch from kernels of oats or rice. In the method, the kernels are ground and the starch is separated from the starch containing fraction obtained by the milling. An essential feature of the invention is that a suspension of the said fraction or of starch separated from it is treated with a surface-active agent or a lipolytic enzyme for disintegrating compound granules or aggregates of starch granules. Except the particle size, also functional properties of starch are affected. Disintegration of compound granules is enhanced by alkaline conditions and by mixing of the suspension. The fine-granuled starch obtained can be applied in foods and, for instance, for biodegradable plastics and for surface treatment agents. The invention can be included as a part of an integrated fractionation process, in which, in addition to starch, an oil fraction, an enriched fibre fraction, and a surplus fraction suitable for feed, are obtained.
Procédé de préparation d'amidon à granulation fine à partir de graines d'avoine ou de riz consistant à moudre lesdits grains, à extraire l'amidon de la partie de la mouture le contenant. L'aspect essentiel de l'invention réside dans le fait que ladite partie ou l'amidon qui en est tiré est traité par un agent tensioactif ou une enzyme lipolytique désintégrant les composés ou les agrégats granulaires d'amidon. Outre son action sur la taille des particules, le procédé agit sur les propriétés fonctionnelles de l'amidon, la désintégration des composés granulaires étant améliorée par l'alcalinité et le malaxage de la suspension. L'amidon à granulation fine obtenu peut s'utiliser dans des préparations alimentaires, dans des plastiques biodégradables et comme agent de traitement de surface. L'invention peut faire partie d'un processus de fractionnement intégré fournissant en plus de l'amidon de l'huile, des fibres enrichies et un surplus de nature alimentaire.
Malkki Yrjo
Myllymaki Olavi
Tuomela Risto
Exavena Oy
Goudreau Gage Dubuc
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