Effect of some factors influencing calcium gluconate production byPenicillium janthinellum

Mandal, Sudipta; Chatterjee, S. K.

doi:10.1007/bf02928675

Cited by 4 publications

(3 citation statements)

References 7 publications

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“…The literature provides many reports on the possibility of using microbial cells to produce GOD and CAT ( Döppner and Hartmeier 1984; Seiskari et al . 1985 ; Mandal and Chatterjee 1986; Caridis et al . 1991 ; Hellmuth et al .…”

Section: Resultsmentioning

confidence: 99%

“…The literature provides many reports on the possibility of using microbial cells to produce GOD and CAT (Do Èppner and Hartmeier 1984;Seiskari et al 1985;Mandal and Chatterjee 1986;Caridis et al 1991;Hellmuth et al 1995;Petruccioli et al 1995;Hatzinikolaou et al 1996;Pluschkell et al 1996). However, as far as is known, there is only one paper on the simultaneous production of GOD and CAT by Penicillium variabile P16 (Petruccioli et al 1994), and none dealing with A. niger.…”

Section: Resultsmentioning

confidence: 99%

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Production of catalase and glucose oxidase by Aspergillus niger using unconventional oxygenation of culture

Fiedurek

Gromada

2000

J Appl Microbiol

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A novel method for increasing dissolved oxygen concentration in culture media has been developed. It involves adding hydrogen peroxide (H 2 O 2 ) to the medium which is then decomposed to oxygen and water by catalase. Some factors affecting oxygenation of culture were investigated. Maximal oxygen concentration occurred in 50 ml of the medium containing 0Á2 g wet mycelium and 0Á2% glucose at pH 5Á0. A new apparatus for automated addition of H 2 O 2 to the bioreactor to keep the dissolved oxygen concentration constant over the range 1±100% 2% was tested. A signi®cant increase (over sixfold) of intracellular catalase activity was obtained while the dissolved oxygen concentration remained stable (30% 2%).

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Production of catalase and glucose oxidase by Aspergillus niger using unconventional oxygenation of culture

Fiedurek

Gromada

2000

J Appl Microbiol

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“…The higher gluconic acid production found at optimal temperatures can be explained by an enhanced enzyme activity and enzyme secretion into the medium, because higher biomass concentrations were obtained at lower temperatures. When comparing the presented results (29-318C), slightly lower optimum temperatures, between 28 and 308C, have been reported for the discontinuous gluconic acid fermentation in A. niger and Penicillium janthinellum (Bernhauer, 1926;Chopra et al, 1975;Mandal and Chatterjee, 1986;Rehm, 1980). On the other hand, Herrick and May (1928) reported about an optimum temperature of 258C for P. luteum-purpurogenum and Ambekar et al (1965) of about an optimal temperature of 248C for P. chrysogenum HA-10.…”

Section: Temperature Effectmentioning

confidence: 63%

Process optimization of continuous gluconic acid fermentation by isolated yeast‐like strains of Aureobasidium pullulans

Anastassiadis

Aivasidis

Wandrey³

et al. 2005

Biotech & Bioengineering

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This study was focused on the optimization of a new fermentation process for continuous gluconic acid production by the isolated yeast-like strain Aureobasidium pullulans DSM 7085 (isolate 70). Operational fermentation parameters were optimized in chemostat cultures, using a defined glucose medium. Different optima were found for growth and gluconic acid production for each set of operation parameters. Highest productivity was recorded at pH values between 6.5 and 7.0 and temperatures between 29 and 31 degrees C. A gluconic acid concentration higher than 230 g/L was continuously produced at residence times of 12 h. A steady state extracellular gluconic acid concentration of 234 g/L was measured at pH 6.5. 122% air saturation yielded the highest volumetric productivity and product concentration. The biomass-specific productivity increased steadily upon raising air saturation. An intracellular gluconic acid concentration of about 159 g/L (0.83 mol) was determined at 31 degrees C. This is to be compared with an extracellular concentration of 223 g/L (1.16 mol), which indicates the possible existence of an active transport system for gluconic acid secretion, or the presence of extracellular glucose oxidizing enzymes. The new process provides significant advantages over the traditional discontinuous fungi operations. The process control becomes easier, thus offering stable product quality and quantity.

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Characterization of xylanase production by a local isolate of Penicillium janthinellum

Milagres

Lacis

Prade

1993

Enzyme and Microbial Technology

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Effect of some factors influencing calcium gluconate production byPenicillium janthinellum

Cited by 4 publications

References 7 publications

Production of catalase and glucose oxidase by Aspergillus niger using unconventional oxygenation of culture

Production of catalase and glucose oxidase by Aspergillus niger using unconventional oxygenation of culture

Process optimization of continuous gluconic acid fermentation by isolated yeast‐like strains of Aureobasidium pullulans

Characterization of xylanase production by a local isolate of Penicillium janthinellum

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