An accurate description of Aspergillus niger organic acid batch fermentation through dynamic metabolic modelling
| العنوان: | An accurate description of Aspergillus niger organic acid batch fermentation through dynamic metabolic modelling |
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| المؤلفون: | Upton, Daniel J., McQueen-Mason, Simon J., Wood, A. Jamie |
| المصدر: | Biotechnology for Biofuels, Vol 10, Iss 1, Pp 1-14 (2017) Biotechnology for Biofuels |
| بيانات النشر: | BMC, 2017. |
| سنة النشر: | 2017 |
| مصطلحات موضوعية: | Metabolic modelling, Citric acid, lcsh:TP315-360, Research, lcsh:Biotechnology, lcsh:TP248.13-248.65, fungi, Polyphosphate, Aspergillus niger, dFBA, lcsh:Fuel |
| الوصف: | Background Aspergillus niger fermentation has provided the chief source of industrial citric acid for over 50 years. Traditional strain development of this organism was achieved through random mutagenesis, but advances in genomics have enabled the development of genome-scale metabolic modelling that can be used to make predictive improvements in fermentation performance. The parent citric acid-producing strain of A. niger, ATCC 1015, has been described previously by a genome-scale metabolic model that encapsulates its response to ambient pH. Here, we report the development of a novel double optimisation modelling approach that generates time-dependent citric acid fermentation using dynamic flux balance analysis. Results The output from this model shows a good match with empirical fermentation data. Our studies suggest that citric acid production commences upon a switch to phosphate-limited growth and this is validated by fitting to empirical data, which confirms the diauxic growth behaviour and the role of phosphate storage as polyphosphate. Conclusions The calibrated time-course model reflects observed metabolic events and generates reliable in silico data for industrially relevant fermentative time series, and for the behaviour of engineered strains suggesting that our approach can be used as a powerful tool for predictive metabolic engineering. Electronic supplementary material The online version of this article (10.1186/s13068-017-0950-6) contains supplementary material, which is available to authorized users. |
| اللغة: | English |
| تدمد: | 1754-6834 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=pmid_dedup__::acd874a256b12954a205641c7a12b46bTest http://link.springer.com/article/10.1186/s13068-017-0950-6Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.pmid.dedup....acd874a256b12954a205641c7a12b46b |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 17546834 |
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