Starch

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 15/54 (2006.01) A01H 1/00 (2006.01) A01H 1/06 (2006.01) A01H 5/00 (2006.01) A23L 1/0522 (2006.01) C08B 30/00 (2006.01) C08B 31/00 (2006.01) C12N 5/04 (2006.01) C12N 5/10 (2006.01) C12N 9/10 (2006.01) C12N 15/29 (2006.01) C12N 15/82 (2006.01) C12P 5/00 (2006.01)

Patent

CA 2463928

This invention relates to a method of producing a starch with unique functionality in plants through mutagenesis, and/or using biotechnology, and/or breeding practices. Further the invention relates to the starch from maize plants and/or other plants which produce starch storing organs which contain low amylose starch which has an amylose content between 1.5 % and 15 % and preferably between 1.5 % and 10 % and most preferably 1.5 and 8 %. The invention includes starch extracted from such grain due to at least one mutation induced by ethyl methanesulfonate. Additionally, the invention uses a biotechnology approach involving controlling the activity of the granule bound starch synthase enzyme in starch storing organ. The invention includes the use of the starch for its cooking, paste, and gel properties.

L'invention concerne un procédé de production d'un amidon possédant une fonctionnalité unique chez les plantes, par mutagenèse, et/ou à l'aide de la biotechnologie et/ou de pratiques de sélection. L'invention concerne également l'amidon de plantes de maïs et/ou d'autres plantes produisant des organes stockant l'amidon qui contiennent de l'amidon à faible contenu d'amylose, cet amidon possédant un contenu d'amylose compris entre 1,5 % et 15 %, de préférence entre 1,5 % et 10 %, et de préférence encore entre 1,5 et 8 %. Cette invention concerne également de l'amidon extrait d'une telle céréale, avec au moins une mutation provoquée par du méthanesulfonate d'éthyle. En outre, l'invention met en oeuvre une approche biotechnologique impliquant la régulation de l'activité de l'enzyme synthase d'amidon lié aux granules dans l'organe stockant l'amidon. L'invention concerne enfin l'utilisation de cet amidon pour ses propriétés de cuisson, de pâte et de gel.

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