The rheology of mould suspensions

Metz, Benjamin; Kossen, N. W. F.; Suijdam, J. C. van

doi:10.1007/3-540-08990-x_24

Cited by 116 publications

(105 citation statements)

References 35 publications

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“…In the comparison of the biomass results with literature, our results are within the ranges of other researchers [13,33]. The pellet sizes which are taken as a means of morphological measurements in this study, are comparable to the results of various researcher who also relate these to the broth rheology during the fermentation [32,34]. With this perspective this study is indicative of providing informations on the conditions for biomass and certain pellet size formation that could be related to other rheological and model development studies for various fungal fermentations [25,35].…”

Section: Validation Of the Modelssupporting

confidence: 88%

Optimization of biomass, pellet size and polygalacturonase production by Aspergillus sojae ATCC 20235 using response surface methodology

Tarı

Gogus

Tokatlı

2007

Enzyme and Microbial Technology

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A two-step optimization procedure using central composite design with four factors (concentrations of maltrin and corn steep liquor (CSL), agitation speed and inoculation ratio) was used in order to investigate the effect of these parameters on the polygalacturonase (PG) enzyme activity, mycelia growth (biomass) and morphology (pellet size) of Aspergillus sojae ATCC 20235. According to the results of response surface methodology (RSM), initial concentrations of maltrin and CSL and agitation speed were significant (p < 0.05) on both PG enzyme production and biomass formation. As a result of this optimization, maximum PG activity (13.5 U/ml) was achievable at high maltrin (120 g/l), at low CSL (0 g/l), high agitation speed (350 rpm) and high inoculation ratio (2 × 10 7 total spore). Similarly, maximum biomass (26 g/l) could be obtained under the same conditions with only the difference for higher level of CSL requirement. The diameter of pellets in all optimization experiments ranged between 0.05 and 0.76 cm. The second optimization step improved the PG activity by 74% and the biomass by 40%.

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Section: Validation Of the Modelssupporting

confidence: 88%

Optimization of biomass, pellet size and polygalacturonase production by Aspergillus sojae ATCC 20235 using response surface methodology

Tarı

Gogus

Tokatlı

2007

Enzyme and Microbial Technology

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“…Furthermore, the fungal morphology is an important parameter in influencing the physical properties of the fermentation broth, e.g., oxygen uptake rate [13,[15][16][17].…”

Section: Resultsmentioning

confidence: 99%

Effect of Oxygen Transfer and Pellet Size for Producing of Glucosamine Using Aspergillus sydowii BCRC 31742 Cultivated in a Fermenter

Hs¹,

Lin²

2017

J Food Process Technol

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“…Morphology of a filamentous microorganism played an important role in metabolic reaction during fermentation process (Metz et al 1979). Cladosporium cladosporioides was observed to form mainly pellets during submerged culture fermentation under mild agitation with ADSW as a substrate.…”

Section: Resultsmentioning

confidence: 99%

“…During the fermentation process, fungal morphology is an important parameter which influences the physical properties of fermentation broth. The rheological behavior is closely related to the morphology and biomass concentrations (Blanch and Bhavaraju 1976;Charles 1978;Metz et al 1979;Tucker and Thomas 1993). The broth rheology determines the transport phenomena in bioreactors and is considered to be the key factor for getting an improved yield of the targeted product (Berovic et al 1991;Gehrig et al 1998).…”

Section: Introductionmentioning

confidence: 99%

Effect of transport phenomena of Cladosporium cladosporioides on decolorization and chemical oxygen demand of distillery spent wash

Rajarathinam¹

2014

Int. J. Environ. Sci. Technol.

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The focus of this report is directed towards the influence of transport properties of fermentation broth in degradation and decolorization of distillery spent wash using Cladosporium cladosporioides. Batch experiment was conducted in a bioreactor for 7 days with 250 rpm at 35°C under optimum bioprocess conditions maintained using control system. Results of the morphological analysis revealed that C. cladosporioides has been observed to form mainly pellets during fermentation under mild agitation. The organism changed from filamentous form to pellet and then breaks, ending with filamentous form. All the models Power law, Bingham plastic, and Herschel-Bulkley fitted the general trend well with high R 2 values ranging from 0.9 to 0.98, indicating shear rate thinning nature of the broth. A maximum decolorization of 72.3 % was achieved with chemical oxygen demand reduction of 74.8 % due to the low viscous and pellet nature of the organism, leading to the transport properties of the fluid. Hence, transport phenomena channalyze the metabolic path way easily and leads to a novel approach for the industries to utilize the spent wash with minimum cost.

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The rheology of mould suspensions

Cited by 116 publications

References 35 publications

Optimization of biomass, pellet size and polygalacturonase production by Aspergillus sojae ATCC 20235 using response surface methodology

Optimization of biomass, pellet size and polygalacturonase production by Aspergillus sojae ATCC 20235 using response surface methodology

Effect of Oxygen Transfer and Pellet Size for Producing of Glucosamine Using Aspergillus sydowii BCRC 31742 Cultivated in a Fermenter

Effect of transport phenomena of Cladosporium cladosporioides on decolorization and chemical oxygen demand of distillery spent wash

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