Parametric optimization and biochemical regulation of extracellular tannase from Aspergillus japonicus

Bradoo, Sapna; Gupta, Rani; Saxena, Rekha

doi:10.1016/s0032-9592(96)00056-8

Cited by 90 publications

(90 citation statements)

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“…2). Contrary to our findings, fi Bradoo et al 17 reported 0.2 % w/v sodium nitrate as optimal for growth and tannase production from A. japonicus. However, Hadi et al 18 reported sodium nitrate concentration as low as 0.05% w/v optimal for tannase production from Rhizopus oryzae.…”

Section: Resultscontrasting

confidence: 99%

“…Aguilar et al 2 also reported that in submerged fermentation, tannase secretion was favored by an initial tannic acid concentration of 50 gL -1 from A. niger Aa-20. However, Bradoo r et al 17 reported 2% tannic acid as optimum for tannase production ), an incubation period of 48 h was found to be the optimum in the present investigation, which declines on further incubation. It has also been reported that tannase is produced during the primary phase of growth and thereafter declines 19 .…”

Section: Resultscontrasting

confidence: 49%

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Statistical optimization for tannase production from Aspergillus niger under submerged fermentation

2007

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Statistically based experimental design was employed for the optimization of fermentation conditions for maximum production of enzyme tannase from Aspergillus niger. Central composite rotatable design (CCRD) falling under response surface methodology (RSM) was used. Based on the results of 'one-at-a-time' approach in submerged fermentation, the most infl uencing factors for fl tannase production from A. niger were concentrations of r tannic acid and sodium nitrate, agitation rate and incubation period. Hence, to achieve the maximum yield of tannase, interaction of these factors was studied at optimum production pH of 5.0 by RSM. The optimum values of parameters obtained through RSM were 5% tannic acid, 0.8% sodium nitrate, 5.0 pH, 5 x I0 7 spores/50mL inoculum density, 150 rpm agitation and incubation period of 48 h which resulted in production of 19.7 UmL -1 of the enzyme. This activity was almost double as compared to the amount obtained by 'one-at-a-time' approach (9.8 UmL -1 ).

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Section: Resultscontrasting

confidence: 99%

Section: Resultscontrasting

confidence: 49%

Statistical optimization for tannase production from Aspergillus niger under submerged fermentation

2007

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“…sive production of extracellular TAH at 24 h of incubation. A similar type of observation has been made by Bradoo et al (1997) for TAH production by Aspergillus japonicus. Presently, SmF is a preferred method for production of most of the commercial enzymes like TAH, principally because sterilization and process control are easier to handle in this system (Lekha and Lonsane, 1997).…”

supporting

confidence: 73%

Effect of fermentation system on the production and properties of tannase of Aspergillus niger van Tieghem MTCC 2425

Rana

Bhat

2005

J. Gen. Appl. Microbiol.

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The tannase-producing efficiency of liquid-surface fermentation (LSF) and solid-state fermentation (SSF) vis-à-vis submerged fermentation (SmF) was investigated in a strain of Aspergillus niger, besides finding out if there was a change in the activity pattern of tannase in these fermentation processes. The studies on the physicochemical properties were confined to intracellular tannase as only this form of enzyme was produced by A. niger in all three fermentation processes. In LSF and SmF, the maximum production of tannase was observed by 120 h, whereas in SSF its activity peaked at 96 h of growth. SSF had the maximum efficiency of enzyme production. Tannase produced by the SmF, LSF and SSF processes had similar properties except that the one produced during SSF had a broader pH stability of 4.5-6.5 and thermostability of 20°-60°C.

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“…Other forms of N sources (NH 4 Cl, NaNO 3 and KNO 3 ) to were beneficial to the organism under study but considerably at higher levels of 2000 mg/100 g substrate for gallic acid production (Table 4). Earlier workers reported NH 4 NO 3 to be a better nitrogen source for tannase production since the fungal species were able to utilize N from both NH 4 3 . In the present study too, NH 4 NO 3 not only stimulated tannase and gallic acid production at lower concentrations but also proved to be more beneficial than other inorganic N sources.…”

Section: Discussionmentioning

confidence: 99%

Gallic Acid Production and Tannase Activity of Penicillium Purpurogenum Stoll Employing Agrobased Wastes Through Solid State Fermentation : Influence of Carbon and Nitrogen Sources

Reddy¹

2012

iosrphr

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The influence of various carbon sources and nitrogen sources on tannase and gallic acid production in SSF by P. purpurogenum BVG7 was studied. Sugars were beneficial only up to 0.2% concentrations and higher levels inhibited tannase and gallic acid production. Amongst the various N compounds (NH 4 NO 3 , NH 4 Cl, NaNO 3 , and KNO 3 ) supplemented to the substrates, NH 4 NO 3 even at much lower concentration was the most beneficial even at lower concentrations than others for gallic acid production.

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Parametric optimization and biochemical regulation of extracellular tannase from Aspergillus japonicus

Cited by 90 publications

References 4 publications

Statistical optimization for tannase production from Aspergillus niger under submerged fermentation

Statistical optimization for tannase production from Aspergillus niger under submerged fermentation

Effect of fermentation system on the production and properties of tannase of Aspergillus niger van Tieghem MTCC 2425

Gallic Acid Production and Tannase Activity of Penicillium Purpurogenum Stoll Employing Agrobased Wastes Through Solid State Fermentation : Influence of Carbon and Nitrogen Sources

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