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Ferulic acid transformation into the main vanilla aroma compounds by Amycolatopsis sp. ATCC 39116

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Abstract

The wild strain Amycolatopsis sp. ATCC 39116 was explored in ferulic acid-based media to produce naturally the aroma components of the cured vanilla pod, namely vanillin, vanillic acid, and vanillyl alcohol. Other phenolic compounds (4-vinyl guaiacol, guaiacol, and protocatechuic acid) were also evaluated. The influence of medium composition, fermentation technology (batch or fed-batch), supplementation with vanillic acid, and inoculum concentration on ferulic acid biotransformation were evaluated. The results postulate the initial concentration of cell mass as the variable with the strongest impact on ferulic acid metabolization under the studied conditions. The highest amounts of vanillin and vanillic acid were achieved at intermediate values of cell mass. Vanillyl alcohol and protocatechuic acid were more closely linked to high cell mass concentrations. Conversely, 4-vinyl guaiacol reached its highest amount at the lowest amount of cell mass. Guaiacol was not detected in any case. Therefore, the initial cell concentration must be considered a critical parameter when using Amycolaptosis sp. ATCC 39116 for the production of vanillin and related compounds.

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Acknowledgments

We are grateful to the Spanish Ministry of Science and Innovation for the financial support of this work (project CTQ2011-28967), which has partial financial support from the FEDER funds of the European Union and to the Spanish Ministry of Education, Culture and Sports for Pérez-Rodríguez’s FPU. We are also grateful to the Brazilian research funding institution CAPES for Prof. J. M. Domínguez’s fellowship as Special Visiting Researcher (Science without Borders Program, project no. 88881.062223/2014-01).

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Correspondence to José Manuel Domínguez.

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Funding

This study was funded by the Spanish Ministry of Science and Innovation for the financial support of this work (project CTQ2011-28967), which has partial financial support from the FEDER funds of the European Union.

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The authors declare that they have no competing interests.

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This article does not contain any studies with human participants or animals performed by any of the authors.

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Pérez-Rodríguez, N., Pinheiro de Souza Oliveira, R., Torrado Agrasar, A.M. et al. Ferulic acid transformation into the main vanilla aroma compounds by Amycolatopsis sp. ATCC 39116. Appl Microbiol Biotechnol 100, 1677–1689 (2016). https://doi.org/10.1007/s00253-015-7005-3

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  • DOI: https://doi.org/10.1007/s00253-015-7005-3

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