دورية أكاديمية
An experimental and in silico analysis of Lacticaseibacillus paracasei isolated from whey shows an association between lactate production and amino acid catabolism
| العنوان: | An experimental and in silico analysis of Lacticaseibacillus paracasei isolated from whey shows an association between lactate production and amino acid catabolism |
|---|---|
| المؤلفون: | CARLOS EDUARDO MEJÍA-GOMEZ, RIGOBERTO RIOS-ESTEPA, LUIS ALBERTO GONZALEZ-LOPEZ, NORMAN BALCAZAR-MORALES |
| المصدر: | Anais da Academia Brasileira de Ciências, Vol 94, Iss 2 (2022) |
| بيانات النشر: | Academia Brasileira de Ciências, 2022. |
| سنة النشر: | 2022 |
| المجموعة: | LCC:Science |
| مصطلحات موضوعية: | flux balance analysis, genome-scale metabolic network model, lactate, lactic acid bacteria, whey, Science |
| الوصف: | Abstract The production of lactic acid from agroindustry waste products, such as whey, heavily relies on microorganisms within the genusLactobacillus. In this work, a genome-scale metabolic model was implemented from Vinay-Lara (iLca334_548), improved adding some enzymatic reactions and used to analyse metabolic fluxes ofLacticaseibacillus paracasei, which is aLactobacillusstrain isolated from whey used in the large-scale production of lactic acid. Overall, the highest rate of lactic acid productivity was 2.9 g l−1h−1, which equates to a dilution rate of 0.125 h−1, when continuous culture conditions were established. Restrictions on lactic acid production caused by exchange reactions, complex culture medium and intracellular metabolite concentrations were considered and included in the model. In total, theiLca334_548 model consisted of 1046 reactions and 959 metabolites, and flow balance analysis better predicted lactate flux than biomass. The distribution of fluxes exhibited an increase in lactate formation as biomass decreased. This finding is supported by the reactions carried out by glyceraldehyde 3-phosphate dehydrogenase, pyruvate formate lyase and ribose-5-phosphate isomerase, corroborating the modelled phenotype with experimental data. In conclusion, there is potential for the improvement of lactate production in a complex media by amino acid catabolism, especially when lactate is derived from pyruvate. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1678-2690 0001-3765 |
| Relation: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652022000300905&tlng=en; https://doaj.org/toc/1678-2690 |
| DOI: | 10.1590/0001-3765202220211071 |
| URL الوصول: | https://doaj.org/article/567e669c321b46b6804f9bfce5c26af4 |
| رقم الأكسشن: | edsdoj.567e669c321b46b6804f9bfce5c26af4 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 16782690 00013765 |
|---|---|
| DOI: | 10.1590/0001-3765202220211071 |