汗臭成分の解明及びその新規消臭剤の開発

Abstract

The majority of antiperspirants and deodorants in the market are formulated by ingredients that act in such a way that the production of body odour is prevented as much as possible.A new type of deodorant that acts directly on chemical compounds responsible for offensive body odours once formed, was investigated. First of all, by analysing foot odour with GC/MS, short chain fatty acids, especially iso-valeric acid, were found to be responsible for the malodour. Short chain fatty acids were also identified within the armpit, another region possessing offensive body odour.Various experiments confirmed us that the conversion of volatile short chain fatty acids into involatile short chain fatty acid salts was the mechanism of choice for quenching acid malodour. A number of compounds were sought, out of which zinc oxide possessing fine particles was the most promising in terms of its outstanding ability to efficiently quench iso-valeric acid.By uniformly covering the surface of a spherical resin such as nylon, with zinc oxide, a hybrid powder that overcomes many of the shortcomings that zinc oxide alone may provoke, was obtained without sacrificing any of zinc oxide's deodorizing power. Body odour quenchers formulated with this hybrid powder were far more efficacious compared to the conventional deodorizers.