Journal of Biological Macromolecules

Online ISSN : 2187-3240
Print ISSN : 1347-2194
ISSN-L : 1347-2194

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Volume 12, Issue 1

Displaying 1-2 of 2 articles from this issue

Review

Hair keratin film as a substitute device for human hair

Application in hair care science

Toshihiro Fujii

2012Volume 12Issue 1 Pages 3-15
Published: May 01, 2012
Released on J-STAGE: December 14, 2012

DOIhttps://doi.org/10.14533/jbm.12.3

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Keratin film prepared from human hair samples can be considered a model which represents an average human hair. In this study, the investigations were focused on whether the keratin film can withstand physical and chemical stimulations such as ultraviolet (UV), bleach, perm, and thermal treatments or not. Obtained data indicated that keratin film responded to such hair damage factors in the similar manner as hair, and responses of keratin film were significantly higher than those of hair. Keratin film can be used as a substitute device for human hair, to accurately evaluate hair damage for the development of hair care related products.

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Article

Increased Volume of Hydration around Dextran Molecules by Water Treated with Ultra-Infrared Ray Radiating Ceramics

Yuuki YASUI, Tadao IMANISHI, Toshihiko YASUDA, Kazuyoshi IWATA, Yoh SA ...

2012Volume 12Issue 1 Pages 17-28
Published: May 01, 2012
Released on J-STAGE: December 14, 2012

DOIhttps://doi.org/10.14533/jbm.12.17

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The hydration volume around dextran molecules was examined with high and low molecular weight dextrans which were dissolved in tap water and two kinds of water treated with ultra-infrared ray radiating ceramics. The partial specific volumes for the dextran in the ceramics-treated water were higher than that in tap water. The evaporation rates for the ceramics treated water were also higher than that of tap water. The results suggested that the hydration volume around dextran molecules increased because the cluster size of water decreased due to the treatment of the ceramics.

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