Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/13562
Título: | Enzymatic synthesis of Tinuvin |
Autor(es): | Schroeder, M. Pereira, Luciana Rodríguez Couto, S. Erlacher, Angelika Schoening, K.-U. Paulo, Artur Cavaco Guebitz, G. M. |
Palavras-chave: | Laccase Oxidative coupling Tinuvin Trametes hirsuta Biotransformation |
Data: | Jun-2007 |
Editora: | Elsevier 1 |
Revista: | Enzyme and Microbial Technology |
Resumo(s): | Coupling of 3-(3-tert-butyl-4-hydroxyphenyl) propionic acid methylester to 1H-benzotriazole using a laccase from Trametes hirsuta was studied. The potentially resulting coupling product Tinuvin 1130 is an important UV-absorber used in polymer based materials. Oxidation of the phenol by the laccase led to homomolecular coupling reactions while the laccase did not attack 1H-benzotriazole. Due to the homomolecular reaction of the phenol in the presence of laccase coupling of phenol and 1H-benzotriazole was only observed when 1H-benzotriazole was applied in four-fold molar excess. The reaction was monitored by UV/vis spectroscopy, TLC and MS (ion trap) analysis. Coupling of 1H-benzotriazole took place in ortho position according to the postulated mechanism. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/13562 |
DOI: | 10.1016/j.enzmictec.2006.11.026 |
ISSN: | 0141-0229 |
Versão da editora: | http://www.sciencedirect.com/science/article/pii/S0141022906005850 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | DET/2C2T - Artigos em revistas internacionais com arbitragem científica |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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ENZYMATIC SYNTHESIS OF TINUVIN.pdf | Enzymatic synthesis of Tinuvin | 332,43 kB | Adobe PDF | Ver/Abrir |