PROBLEM TO BE SOLVED: To provide sericin in which hydrophobicity has been raised while highly maintaining the original functionality of a sericin, and to provide its production method.SOLUTION: The sericin in which hydrophobicity has been raised has the following characteristics: (1) the sericin includes at least 15 mol% of a hydrophobic amino acid as an amino acid composition (2) a weight-average molecular weight is 1,000-70,000 (3) the surface tension of a 0.1 wt.% aqueous solution is at most 60 mN/m.COPYRIGHT: (C)2011,JPO&INPIT【課題】本発明は、セリシン本来の機能性を高度に維持しつつ、疎水性が高められたセリシン、および、その製造方法を提供することを目的とする。【解決手段】以下の性質を有する、疎水性が高められたセリシン:(1)アミノ酸組成として疎水性アミノ酸を15モル%以上含み、(2)重量平均分子量が1,000~70,000であり、かつ、(3)0.1重量%水溶液の表面張力が60mN/m以下である。【選択図】図1
