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| Format: | Artículo científico |
| Language: | en |
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Universidad de Antioquia
2012
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| Online Access: | https://www.redalyc.org/articulo.oa?id=43025100002 |
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Table of Contents:
- Structural modification of trans-cinnamic acid using Colletotrichum acutatum Rodrigo Velasco B. Jesús H. Gil G. Carlos M. García P. Diego L. Durango R. Ingeniería Biocatalyst culture media metabolic pathway phytopathogenic fungus The biotransformation of trans-cinnamic acid by whole cells of the Colombian native phytopathogenic fungus Colletotrichum acutatum was studied. Initially, fungitoxicity of this compound against C. acutatum was evaluated; trans-cinnamic acid exhibited a moderate to weak toxicity against the microorganism and apparently a detoxification mechanism was present. Then, in order to study such mechanism and explore the capacity of this fungus to biotransform trans-cinnamic acid into value-added products, the microorganism was incubated with the substrate using three different culture media (Czapeck-Dox, Sabouraud and PDB) at room conditions. Using Czapeck-Dox medium, whole cultures of C. acutatum reduced trans-cinnamic acid, first to aldehydes (trans-cinnamaldehyde and 3-phenylpropanal), then to alcohols (cinnamyl alcohol and 3-phenyl-1-propanol). Subsequently, these alcohols were transformed to the corresponding acetyl esters. Nevertheless, some of these products were absent or present at different concentration when culture medium was changed. The results suggest a mechanism of detoxification in which the α,β-unsaturated carbonyl system is affected.Besides, the formed metabolic products are useful compounds used as fragrances and flavors. Therefore, metabolism of trans-cinnamic acid using C. acutatum can provide new potential metabolic targets to control C. acutatum as well as a simple and efficient way to obtain flavor compounds and perfumes, such as cinnamyl alcohol and 3-phenyl-1-propanol, and their acetyl esters. 2012 artículo científico 0120-6230 https://www.redalyc.org/articulo.oa?id=43025100002 en http://www.redalyc.org/revista.oa?id=430 Revista Facultad de Ingeniería Universidad de Antioquia application/pdf Universidad de Antioquia Revista Facultad de Ingeniería Universidad de Antioquia (Colombia) Num.63