High-Precision Visualization of Cysteic Acid in Hair Using SPring-8 Beamline -Establishment of technique for high-precision determination of damaged area in hair- (Press Release)
- Release Date
- 16 Dec, 2014
- BL43IR (Infrared Materials Science)
Milbon Co., Ltd.
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A research group at the Central Research Institute of Milbon Co., Ltd. (President and CEO, Ryuji Sato) has succeeded in visualizing cysteic acid*1 in hair at the micrometer level using a beamline at SPring-8*2. The cysteic acid in hair is produced by oxidation treatment of hair, such as coloring, bleaching, and perming, and is known as an indicator of the level of damage of hair. However, the site and the level of damage in hair have not been precisely clarified thus far because the distribution of cysteic acid in hair has not been determined highly precisely. The research group is planning to use the visualization technique to further the research on the development of more effective products. |
《Glossary》
※1 Cysteic acid
Treatments using oxidants, such as hydrogen peroxide, during coloring, bleaching, and perming cause excessive oxidation. When the oxidation reaction proceeds and cysteic acid is generated, it is not possible to reduce the cysteic acid to a sulfide group or disulfide group by adding a reducing agent to a perm solution, leading to the loss of the ability to form covalent bonds. Therefore, cysteic acid is considered to be an indicator of the level of damage of hair.
※2 SPring-8
SPring-8 (Harima Science Park, Hyogo, Japan) is a synchrotron radiation facility that provides the world's highest brilliance radiation. It’s owned by Riken and run by JASRI. The name "SPring-8" is from "Super Photon ring-8 GeV". Synchrotron radiation is a electromagnetic wave radiated when charged particles are forced to bend in magnetic fields. Synchrotron radiation from SPring-8 is widely used for the studies of nano-technology, bio-technology and industrial purposes.
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