Water-soluble keratin derivative and use thereof
AssigneesUmeda Jimusho Ltd., Institute of Rheological Function of Food Co., Ltd., Asai Germanium Research Institute Co., Ltd.
InventorsKeiji Umeda, Yositaka Nadachi, Katsunobu Sakai, Yukitaka Nogami, Masahiko Sudo
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Abstract
The present invention provides a novel water-soluble keratin derivative and applications thereof. Water-soluble keratin produced by the alkali treatment of feathers, and modified keratin, gives the following useful materials: (1) a high energy wave absorber, (2) a luminescent substrate, (3) a material weatherproofness improver, (4) a water repellant, and (5) a foaming agent.
Claims13
A process for preparing a water-soluble keratin derivative comprising processing of poultry feathers by the following:
- (a) contacting the poultry feathers with an alkali both to desulfurize and to solubilize the feathers in water, thereby forming a water-soluble component and a water-insoluble component;
- (b) separating the water-soluble component from the water-insoluble component by ultra-filtration to obtain a first water-soluble derivative with molecular weight of 10,000 to 50,000 (water-soluble keratin derivative I or MFP), and
- (c) irradiating the MFP with UV-C to obtain a second water-soluble derivative (water-soluble keratin derivative II or UVP) having increased lanthionines and decreased cysteines compared with MFP.
Dependencies are inferred from the claim text.