The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.
A study on clavulanic acid production by Streptomyces clavuligerus in batch, fed-batch and continuous processes
Open accessAbstract
Clavulanic acid (CA) is a potent inhibitor of beta-lactamases, enzymes that are responsible for the hydrolysis of beta-lactam antibiotics. It is a secondary metabolite produced by the filamentous aerobic bacterium Streptomyces clavuligerus in submerged cultivations. In the present work clavulanic acid production in batch, fed-batch and continuous bioreactors was studied with the objective of increasing productivity. The operating conditions: temperature, aeration and agitation, were the same in all cases, 28º C, 0.5 vvm and 800 rpm, respectively. The CA concentration obtained in the fed-batch culture, 404 mg L-1, was ca twice the value obtained in the batch culture, 194 mg L-1, while 293 mg L-1 was obtained in the continuous culture. The highest productivity was obtained in the continuous cultivation, 10.6 mg L-1 h-1, as compared with 8.8 mg L-1 h-1 in the fed-batch process and 3.5 mg L-1 h-1 in the batch process, suggesting that continuous culture of Streptomyces clavuligerus is a promising strategy for clavulanic acid production.
Overview
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Claims other papers make about this one
Each is checked against this paper’s own text: does it say what the citing paper says it does?
The source backs part of the claim, not all of it — or backs it for a different population, condition or comparison.
In the citing paper
“Previous studies have shown that CA stability increases at slightly acidic pH values [10,11]; several authors found a pH of 6.8 as favorable for obtaining high titers of CA in submerged cultures [5,7,9,12,13,14,15,16].”
From Degradation Kinetics of Clavulanic Acid in Fermentation Broths at Low Temperatures (2019) · cites this paper as [9]
Experimental — accuracy not yet measuredThe cited source says what the claim attributes to it.
In the citing paper
“Comparing batch and fed-batch fermentation, fed-batch fermentation systems seemed to generate a higher yield of clavulanic acid (Chen et al., 2002; Neto et al., 2005; Bellão et al., 2013).”
From Fermentation Conditions that Affect Clavulanic Acid Production in Streptomyces clavuligerus: A Systematic Review (2016) · cites this paper as Neto et al., 2005
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cites
Naturally-occurring beta-lactamase inhibitors with antibacterial activity
BROWN, A. G., BUTTERWORTH, D., COLE, M., HANSCOMB, G., HOOD, J. D., READING, C., & ROLINSON, G. N. (1976) · The Journal of Antibiotics · doi:10.7164/antibiotics.29.668 · Cited by 399
Flagged first, then by citations
Research works printed but not linked: 10
- Baggaley, K.H., Brown, A.G. and Schofield, C.J., Chemistry and Biosynthesis of Clavulanic Acid and Another Clavans. Natural Product Report, vol. 57, pp. 309-333, 1997.
- Baptista-Neto, A., Gouveia, E.R., Badino-Jr, A.C. and Hokka, C.O., Phenomenological Model of the Clavulanic Acid Production Process Utilizing Streptomyces clavuligerus, Brazilian Journal of Chemical Engineering, vol. 17, n. 04-07, pp.809- 818, 2000.
- Battaglia-Hirata, D., Produção de Ácido Clavulânico por Streptomyces clavuligerus e Extração em Sistema de Duas Fases Aquosas, São Carlos-SP, University Federal of São Carlos, (Master's thesis), 2003.
- Butterworth, D., Clavulanic acid: Properties Biosynthesis, and Fermentation. In: Vandamme, E.J. Biotechnology of Industrial Antibiotics, New York, Marcel Dekker, vol.22, pp.225-235, 1984.
- Demain, A.L, Overproduction of Microbial Metabolites and Enzymes due to Alteration of Regulation, Advances in Biotechnological Engineering, vol. 1, 113 p., (1971)
- Foulstone, M. and Reading, C., Assay of Amoxillin and Clavulanic Acid, the Components of Augmentin, in Biological Fluids With HPLC, Ant. Ag. Chem., vol.22, pp.753-762, 1982.
- Kirk S, Avignone-Rossa C.A. and Bushell M.E., Growth Limiting Substrate Affects Antibiotic Production and Associated Metabolic Fluxes in Streptomyces clavuligerus, Biotechnology Letters; vol. 22; n. 22, pp. 1803-1809; 2000.
- Mayer, A.F. and Deckwer, W.-D. Simultaneous Production and Decomposition of Clavulanic Acid During Streptomyces clavuligerus Cultivations. Appl. Microbiol. Biotechnol., vol.45, pp. 41-46, 1996.
- Rosa, J.C., Influência das Condições de Transferência de O2 na Produção de Ácido Clavulânico por Streptomyces clavuligerus, São Carlos-SP, University Federal of São Carlos, (Master's thesis), 2002.
- Yegneswaran, P.K., Gray, M.R. and Thompson, B.G., Experimental Simulation of Dissolved Oxigen Flutuations in Large Fermentors: Effect on Streptomyces clavuligerus, Biotech. Bio., vol.38, pp. 1203-1209, 1991.
Cited by
Sorted by citations
Ser, H.-L., Law, J. W.-F., Chaiyakunapruk, N., Jacob, S. A., Palanisamy, U. D., Chan, K.-G., Goh, B.-H., & Lee, L.-H. (2016) · Frontiers in Microbiology · doi:10.3389/fmicb.2016.00522 · Cited by 90
“Comparing batch and fed-batch fermentation, fedbatch fermentation systems seemed to generate a higher yield of clavulanic acid (Chen et al., 2002; Neto et al., 2005; Bellão et al., 2013).”
BackgroundDegradation Kinetics of Clavulanic Acid in Fermentation Broths at Low Temperatures
Gómez-Ríos, D., Ramírez-Malule, H., Neubauer, P., Junne, S., & Ríos-Estepa, R. (2019) · Antibiotics · doi:10.3390/antibiotics8010006 · Cited by 17
Metadata
- Authors
- Neto, A. B., Hirata, D. B., Cassiano Filho, L. C. M., Bellão, C., Badino Júnior, A. C., & Hokka, C. O.
- Affiliations
- Universidade Federal de São Carlos (BR)
- Federal University of São Carlos, Brazil
- Venue
- Brazilian Journal of Chemical Engineering
- Publisher
- FapUNIFESP (SciELO)
- Published
- 2005-12
- Volume
- 22
- Issue
- 4
- Pages
- 557-563
- ISSN
- 0104-6632 (ISSN-L)
- OpenAlex
- W2136136263
- Cited by
- 23
- References
- 1
- Citations by year
- 2024: 1 · 2022: 1 · 2021: 3 · 2020: 2 · 2019: 1 · 2018: 1 · 2017: 2 · 2016: 1 · 2014: 1 · 2013: 2 · 2012: 3
- FWCI
- 0.21
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Licence
- cc-by-nc
- Locations
- Brazilian Journal of Chemical Engineering (publishedVersion, cc-by-nc)
- LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) (publishedVersion, other-oa)
- Americanae (AECID Library) (submittedVersion, other-oa)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
- Funders
- Fundação de Amparo à Pesquisa do Estado de São Paulo (99/03279-7)
- Conselho Nacional de Desenvolvimento Científico e Tecnológico
- Topics
- Life Sciences › Immunology and Microbiology › Applied Microbiology and Biotechnology › Microbial Natural Products and Biosynthesis
- Physical Sciences › Chemical Engineering › Fluid Flow and Transfer Processes › Fluid Dynamics and Mixing
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Biotechnology › Enzyme Production and Characterization
- Keywords
- clavulanic acid, Streptomyces clavuligerus, secondary metabolite production, continuous fermentation, fed-batch fermentation, batch fermentation, bioprocess productivity, submerged culture, beta-lactamase inhibitors
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review