A photoexcited porphyrin system as a biomimetic catalyst for D-limonene biotransformation

作者：Trytek M; Fiedurek J^*; Polska K; Radzki S

来源：Catalysis Letters, 2005, 105(1-2): 119-126.

DOI：10.1007/s10562-005-8014-0

• biomimetic oxidation catalysts
• biotransformation
• D-limonene
• porphyrin
• uv-vis spectroscopy
• photooxidation

A photoexcited porphyrin system has been found to be an efficient catalyst for D-limonene biotransformation. The catalyst showed high selectivity in hydroxylation of D-limonene. The best catalyst for limonene biotransformation was 5,10,15,20-Tetraphenylporphyrin (H(2)TPP), which gave the highest accumulation of carvone and an unknown product with a verbenone-like mass spectrum. The highest conversion yield of these products was favoured at 1: 2 molar ratio of H(2)TPP to limonene. Some factors affecting the biotransformation yield were also investigated. Maximal yield of carvone was obtained in the medium containing 90% of the substrate, within the period of 18-36 h. Mechanism involved in limonene biotransformation catalysed by H(2)TPP is also discussed.

• 出版日期2005-11