Ezaki Glico Co., Ltd.

Glico Nutrition Co., Ltd.

Iwao Kojima

Masahiro Nishikawa

Takeshi Takaha

Michiyo Yanase

Koji Odan

Tsunehisa Akiyama

Kouji Odan

Provided is a preparation method for phycocyanin, including: adding chitosan to a suspension of cyanobacteria containing phycocyanin; and filtering the suspension.

Method for preparing phycocyanin

An object of the present invention is to provide a method for industrially producing a branched glucan having a cyclic structure. The method for producing a branched glucan having a cyclic structure comprises the steps of: (1) preparing a mixed liquid which contains a branching enzyme in which starch granules are suspended at a concentration of 5% by weight or more and 50% by weight or less, and allowing the branching enzyme to act on starch in the starch granules, wherein a temperature of the mixed liquid at the time of preparation is 0&#xb0; C. or higher and not higher than the gelatinization starting temperature of the starch granule; and (2) elevating the temperature of the mixed liquid to 85&#xb0; C. or higher and 129&#xb0; C. or lower, wherein in the method, none of &#x3b1;-amylase, &#x3b2;-amylase, amyloglucosidase and &#x3b1;transglucosidase is added to the mixed liquid.

Method for industrially producing cyclic-structure-containing branched glucan

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Osaka, Japan

Iwao Kojima