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

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 (H2TPP), which gave the highest accum...

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Bibliographic Details
Published in:Catalysis letters 2005-11, Vol.105 (1-2), p.119-126
Main Authors: TRYTEK, Mariusz, FIEDUREK, Jan, POLSKA, Kaiarzyna, RADZKI, Stanisław
Format: Article
Language:English
Subjects:
Biomimetics
Biotransformation
Catalysis
Catalysts
Chemistry
Exact sciences and technology
General and physical chemistry
Hydroxylation
Photochemistry
Physical chemistry of induced reactions (with radiations, particles and ultrasonics)
Selectivity
Substrates
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
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Summary: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 (H2TPP), 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 H2TPP 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 H2TPP is also discussed.
ISSN:1011-372X
1572-879X
DOI:10.1007/s10562-005-8014-0