2013
DOI: 10.1590/s0104-66322013000200004
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Production of clavulanic acid and cephamycin C by Streptomyces clavuligerus under different fed-batch conditions

Abstract: -The effect of carbon source and feeding conditions on the production of clavulanic acid (CA) and cephamycin C (CephC) by Streptomyces clavuligerus was investigated. In fed-batch experiments performed with glycerol feeding, production of CA exceeded that of CephC, and reached 1022 mg.L ) was obtained in fed-batch cultivation with glycerol feeding. In fed-batch experiments performed with starch feeding, the production of CephC was in general higher than that of CA. A dissociation index (DI) was used to identify… Show more

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Cited by 22 publications
(23 citation statements)
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References 32 publications
(41 reference statements)
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“…Production of antimicrobial metabolites from microorganisms requires glycerol as a known important medium component [25]. Also, glycerol supplies the carbon skeleton of the ß-lactam ring without conformational change in the three carbon positions [26] In our findings, CA production was higher using glycerol as sole carbon source, in agreement with earlier work reported by Bellao et al [27].…”
Section: Discussionsupporting
confidence: 91%
“…Production of antimicrobial metabolites from microorganisms requires glycerol as a known important medium component [25]. Also, glycerol supplies the carbon skeleton of the ß-lactam ring without conformational change in the three carbon positions [26] In our findings, CA production was higher using glycerol as sole carbon source, in agreement with earlier work reported by Bellao et al [27].…”
Section: Discussionsupporting
confidence: 91%
“…Entretanto, esses resultados podem ser justificados devido à fonte de carbono utilizada por esses autores (glicerol), visto que, o glicerol é a fonte de carbono que participa diretamente na biossíntese do ácido clavulânico. Portanto, modificar a fonte de carbono pode ocasionar uma diminuição na produção do AC (Bellão et al 2013). Também é possível ressaltar que o melhor tempo de produção relatado pelos autores anteriormente citados foi de 144 horas.…”
Section: Discussionunclassified
“…A porcentagem de variância explicada 90,9 % é aceitável para experimentos biológicos (SHIVHARE e MCCREATH, 2010 clavuligerus (HENAO et al 2012;NETO et al 2005;BELLÃO et al 2013). A produção do AC descrita na literatura é extremamente variável devido à diferença na composição do meio de cultivo, aeração, suplementação do cultivo, pH e temperatura de cultivo (SER et al 2016).…”
Section: Fonteunclassified
“…A discrepância dos valores de produção e produtividade do ácido clavulânico utilizando condições de cultivo semelhantes e o mesmo microorganismo podem ser explicadas pela ausência de padronização do número de células utilizadas como inóculo (Hiratta et al, 2005;Costa e Baldino., 2012;Bellão et al, 2013).…”
Section: Streptomyces Clavuligerus Atcc 27064 é 27unclassified