San-ei Gen F.f.i., Inc.

Takatoshi Koda

Makoto Sakata

Takahito Ichi

Chiyoki Yukawa

Hiroyuki Sato

Kazuhiro Emura

Yutaka Higashimura

Noriko Kuze

Junko Shirai

Hiromitsu Aoki

The invention provides a cochineal color, a colorant product containing the cochineal color and the method of its production, wherein the cochineal color is free of allergenic proteins and contaminants derived from the raw materialL. insect and can be added with safety to products taken by mouth, such as foods, pharmaceutical products, etc. The invention relates to a cochineal color substantially free of proteins of molecular weight not less than 6000. The invention also relates to a process for producing a cochineal color which comprises subjecting a cochineal extract solution to proteolysis and then to at least one treatment selected from the group consisting of adsorption treatment, ion exchange treatment, acid treatment, extraction treatment and membrane treatment.

Purified cochineal and method for its production

A method of preparing a purified purple corn coloring agent comprising passing a purple corn color extract solution through an adsorption resin, washing with water, and releasing the purple corn color from the resin with the use of an aqueous solution containing alcohol of 25 to 45 v/vt %.

Method of preparing a purified purple corn coloring agent

The present invention provide an anti-fading agent for a pigment, characterized by comprising as active ingredients at least one oligosaccharide selected from the group consisting of nigerooligosaccharide, maltooligosaccharide and panose, when so required, in addition of an antioxidant. The anti-fading agent of the invention can advantageously inhibit fading in colors (including fading in colors by light irradiation and heat treatment) of natural pigments such as anthocyanin-based pigments, flavonoid-based pigments, carotenoid-based pigments and the like, and is useful for colored beverage and food products, pharmaceutical drugs, cosmetics and the like with which the fading in colors may be a problem.

Method for inhibiting fading of a natural pigment using nigerooligosaccharide or maltooligosaccharide or panose with or without an antioxidant

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Toyonaka, Japan

Takatoshi Koda