Process for producing purified anthocyanin and crystalline...

C - Chemistry – Metallurgy – 12 – P

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C12P 19/14 (2006.01) C07H 17/065 (2006.01) C09B 61/00 (2006.01) C12P 19/44 (2006.01)

Patent

CA 2421954

Provided are a process for producing purified anthocyanidin glucoside in which a rhamnose end of anthocyanidin rutinoside is cleaved using rhamnosidase to convert the anthocyanidin rutinoside component into anthocyanidin glucoside, the anthocyanidin glucoside component being then purified and isolated; or a crystalline anthocyanidin glucoside salt obtained by further crystallizing the purified anthocyanidin glucoside and a process for producing the same. Also provided are a process for producing purified anthocyanidin rutinoside in which a glucose end of anthocyanidin glucoside is cleaved using .beta.-glucosidase to degrade and remove the end, the anthocyanidin rutinoside component being then purified and isolated; or a crystalline anthocyanidin rutinoside salt obtained by further crystallizing the purified anthocyanidin rutinoside and a process for producing the same.

Cette invention se rapporte à un procédé servant à produire du glucoside d'anthocyanidine purifié et se caractérisant en ce qu'il consiste à cliver l'extrémité rhamnose du rutinoside d'anthocyanidine avec de la rhamnosidase, à convertir le constituant rutinoside d'anthocyanidine en glucoside d'anthocyanidine et ensuite à purifier et isoler le constituant glucoside d'anthocyanidine; ou à un sel glucoside d'anthocyanidine cristallin obtenu par cristallisation ultérieure du glucoside d'anthocyanidine purifié, ainsi qu'à un procédé de production de ces composés. Cette invention concerne un procédé servant à produire du rutinoside d'anthocyanidine et se caractérisant en ce qu'il consiste à cliver l'extrémité glucose du glucoside d'anthocyanidine avec de la beta -glucosidase, à éliminer par décomposition et ensuite à purifier et isoler le constituant rutinoside d'anthocyanidine; ou à un sel rutinoside d'anthocyanidine cristallin obtenu par cristallisation ultérieure du rutinoside d'anthocyanidine purifié, ainsi qu'à un procédé de production de ces composés.

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