Solid-state fermentation of wheat bran by Trichoderma reesei QM9414: substrate composition changes, C balance, enzyme production, growth and kinetics

Smits, JM Jan; Rinzema, A.; Tramper, J.; Sonsbeek, H.M. van; Knol, W.

doi:10.1007/s002530050849

Cited by 92 publications

(56 citation statements)

References 12 publications

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“…As regards specific rate of growth () ( Table 2), their values remain within the expected range for fungal growth by SSF (between 10 and 90·10 -3 h -1 ) (Favela-Torres et al 1998;Ruiz et al 2012;Smits et al 1996).…”

Section: Discussionsupporting

confidence: 58%

Modelling of different enzyme productions by solid-state fermentation on several agro-industrial residues

Díaz

Blandino

Webb

et al. 2016

Appl Microbiol Biotechnol

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A simple kinetic model, with only three fitting parameters, for several enzymes production in Petri dishes by solid state fermentation is proposed in this paper, which may be a valuable tool for simulation of this type of processes. Basically, the model is able to predict temporal fungal enzymes production by solid state fermentation on complex substrates, maximum enzyme activity expected and time at which these maximums are reached. In this work several fermentations in solid state were performed in Petri dishes, using four filamentous fungi grown on different agro-industrial residues, measuring xylanase, exopoligalacturonase, cellulose and laccase activities over time. Regression coefficients after fitting experimental data to the proposed model turned out to be quite high in all cases. In fact, these results are very interesting considering on the one hand, the simplicity of the model, and on the other hand, that enzyme activities correspond to different enzymes, produced by different fungi on different substrates.

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Section: Discussionsupporting

confidence: 58%

Modelling of different enzyme productions by solid-state fermentation on several agro-industrial residues

Díaz

Blandino

Webb

et al. 2016

Appl Microbiol Biotechnol

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“…Titres of cellulolytic enzymes at peak production time interval in solid state fermentation were higher on wheat bran than on other solid matrices in the present study. Increased production of cellulase in wheat bran is known for presence of ample nutrients, existence of loose texture in moist conditions, and a large surface area 20 . Individual components of cellulolytic enzymes reached peak production at different time intervals in the present study.…”

Section: Resultsmentioning

confidence: 99%

Cellulolytic enzymes on lignocellulosic substrates in solid state fermentation by Aspergillus niger

2007

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The production of cellulolytic enzymes by Aspergillus niger on lignocellulosic substrates groundnut fodder, wheat bran, rice bran and sawdust in solid state fermentation in a laboratory scale was compared. Czapek Dox liquid broth amended with cellulose (0.5%) was used to moisten lignocellulosic solid supports for cultivation of Aspergillus niger. The production of fi lter paperase, carboxymethyl cellulase and -glucosidase were monitored at daily intervals for 5 days. The peak production of the enzymes occurred within 3 days of incubation. Among solid supports used in the study, wheat bran was the best solid matrix followed by groundnut fodder in production of cellulolytic enzymes in solid state fermentation. Groundnut fodder supported signifi cant production of FPase (2.09 FPU/g), CMCase (1.36 U/g) and -glucosidase activity (0.0117 U/g) in solid state fermentation. Considerable secretion of protein (5.10 mg/g) on groundnut fodder at peak time interval 1st day of incubation was recorded.

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“…The water content declined (0.175 ± 0.007 g/g dry matter) during 5 days fermentation, as described on Figure 2; possibly as a changing effect of water-binding capacity of the fermented corn (Smits et al, 1996b). Furthermore, water content loss was followed by the increasing of the fungal growth, which was clearly described by the raising of glucosamine content in Figure 1.…”

Section: Resultsmentioning

confidence: 57%

“…Similar findings have been explained by Zambare (2010), there was a reduction of substrate moisture content during fermentation because of fungal metabolic activities and evaporation. Smits et al (1996b) supported that beside water content; fiber, starch, and total free sugar also decreased as the result of substrate utilization during the growth of filamentous fungi. …”

Section: Resultsmentioning

confidence: 72%

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The role of Aspergillus oryzae KKB4 in reducing and detoxifying aflatoxin B1 applied in moist-heated corn

Carolina¹,

Setyabudi²,

Sardjono³

2017

MJM

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Aims:The growth and metabolic activity of Aspergillus oryzae KKB4 in AFB1-contaminated corn and later coincided with AFB1 reduction and detoxification were investigated. Methodology and results:The decreasing of AFB1 amount by A. oryzae KKB4 could be clearly observed if the initial AFB1 concentration in corn was increased. Thus, moist-heated corn was artificially inoculated with Aspergillus flavus FNCC 62C7 to increase AFB1 content. AFB1-contaminated corn was applied as solid substrate and then inoculated with A. oryzae KKB4. During fermentation periods, the growth, metabolic activity, and AFB1 decline were investigated by glucosamine content, water content loss, and AFB1 concentration, respectively. The maximum growth was occurred in 4 th day at 1.499 ± 0.028 g glucosamine/ 100 g dry matter. The metabolic activity was going on up to the end of fermentation days, as shown as water content loss at 0.175 ± 0.007 g/g dry matter. In accordance with the growth and metabolic activity, the amount of AFB1 reduction was 37.04 ng AFB1/g dry matter during 5 days fermentation. According to toxicity analysis, it was found that the residues of AFB1 were not toxic to Bacillus megaterium cells. Conclusion, significance and impact of study: A. oryzae KKB4 is able to be applied in solid substrates as AFB1 reduction and detoxification agent. These lucrative effects are also important in relation with food and feed safety.

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Solid-state fermentation of wheat bran by Trichoderma reesei QM9414: substrate composition changes, C balance, enzyme production, growth and kinetics

Cited by 92 publications

References 12 publications

Modelling of different enzyme productions by solid-state fermentation on several agro-industrial residues

Modelling of different enzyme productions by solid-state fermentation on several agro-industrial residues

Cellulolytic enzymes on lignocellulosic substrates in solid state fermentation by Aspergillus niger

The role of Aspergillus oryzae KKB4 in reducing and detoxifying aflatoxin B1 applied in moist-heated corn

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