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Production method of new dyeing materials
专利权人:
月桂冠株式会社
发明人:
山中 寛之,中村 幸宏,秦 洋二
申请号:
JP2015105309
公开号:
JP6594661B2
申请日:
2015.05.25
申请国别(地区):
JP
年份:
2019
代理人:
摘要:
PROBLEM TO BE SOLVED: To provide a method of efficiently producing a melanin precursor containing cysteinyl dopa, and to provide a method of efficiently producing a melanin containing pheomelanin.SOLUTION: A production method of a melanin precursor containing cysteinyl dopa comprises a following step (1): (1) in a mixture that contains an enzyme with catechol-oxidase activity or a microorganism containing the enzyme, cysteine, and DOPA and/or tyrosine, and in which DOPA and/or tyrosine and cysteine are compounded at a molar ratio (DOPA and/or tyrosine: cysteine) is 1:0.5-4, oxidizing DOPA and/or tyrosine to convert into cysteinyl dopa; and a production method of a melanin containing pheomelanin comprises a following step (3): (3) treating the melanin precursor containing the cysteinyl dopa obtained by the above-mentioned method in an alkali condition and in presence of oxygen to convert into pheomelanin.SELECTED DRAWING: None
来源网站:
中国工程科技知识中心
来源网址:
http://www.ckcest.cn/home/

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