PROBLEM TO BE SOLVED: To solve such a problem that improvement in practical use of a metal-containing collagen has been required in practical application of collagen containing a metal such as aluminum because there is a problem of a state of application due to technical restriction in working of collagen such as a state with which the function is fulfilled is restricted to a powder state, a fiber state, or a work state in which collagen is directly applied and made insoluble, moreover restriction of applicable articles, that is, states of products, and also there is a problem of cost increase caused by such working.SOLUTION: An aqueous solution including: a polypeptide whose concentration is in the range of 0.00001-6 wt.% and a metal whose concentration is in the range of 0.025-0.5 wt.% or 0.000002-0.02 wt.%, turns out to be an aqueous solution in which a metal-containing collagen is kept in a condition of stable dissolution in water without giving rise to insolubilization, and imparts an anti-bacterium and anti-allergenition function to articles in various shapes with spray treatment.COPYRIGHT: (C)2012,JPO&INPIT【課題】 アルミニウム等金属含有コラーゲンの実用化において、機能発現可能な形態が粉末形態、繊維形態、あるいはコラーゲンを直接塗布し不溶化した加工形態のものに限られているなど、コラーゲン加工上の技術的制約による適用形態、ひいては適用対象品、すなわち製品形態が限定されるという問題、またこのような加工によるコストアップの問題もあり、金属含有コラーゲンの実用化上の改良が求められていた。【解決手段】 ポリペプチド濃度範囲が0.00001~6重量%、金属濃度が0.025~0.5重量%、もしくは0.000002~0.02重量%の範囲である水溶液は、不溶化を引き起こすことなく安定に水に溶解した状態を保った水溶液となり、噴霧処理での種々形態の物品への抗菌、抗アレルゲン性能機能付与を可能にした。【選択図】 なし
