Growth kinetics of Rhizopus arrhizus in solid state fermentation of treated cassava

1993 ◽  
Vol 7 (8) ◽  
pp. 563-568 ◽  
Author(s):  
Carlos Soccol ◽  
Jos� Rodr�guez Le�n ◽  
Bernard Marin ◽  
Sevastianos Roussos ◽  
Maurice Raimbault
Keyword(s):  
Solid State ◽  
Growth Kinetics ◽  
Solid State Fermentation ◽  
Rhizopus Arrhizus ◽  
Kinetics Of

Solid-State Sintering of Hydrothermal Powders: Densification and Grain Growth Kinetics of Nickel–Zinc Ferrites

1998 ◽  
Vol 33 (3) ◽  
pp. 475-486 ◽  
Author(s):  
A Dias ◽  
N.D.S Mohallem ◽  
R.L Moreira
Keyword(s):  
Solid State ◽  
Grain Growth ◽  
Growth Kinetics ◽  
Nickel Zinc ◽  
Solid State Sintering ◽  
Grain Growth Kinetics ◽  
Kinetics Of

scholarly journals Optimization of Lipase Production in Solid-State Fermentation by Rhizopus Arrhizus in Nutrient Medium Containing Agroindustrial Wastes

2018 ◽  
Vol 12 (1) ◽  
pp. 189-203 ◽  
Author(s):  
Georgi Dobrev ◽  
Hristina Strinska ◽  
Anelia Hambarliiska ◽  
Boriana Zhekova ◽  
Valentina Dobreva
Keyword(s):  
Solid State ◽  
Moisture Content ◽  
Solid State Fermentation ◽  
Lipase Activity ◽  
Nutrient Medium ◽  
Solid Medium ◽  
Low Cost ◽  
Lipase Production ◽  
Rhizopus Arrhizus ◽  
Agroindustrial Wastes

Background: Rhizopus arrhizus is a potential microorganism for lipase production. Solid-state fermentation is used for microbial biosynthesis of enzymes, due to advantages, such as high productivity, utilization of abundant and low-cost raw materials, and production of enzymes with different catalytic properties. Objective: The objective of the research is optimization of the conditions for lipase production in solid-state fermentation by Rhizopus arrhizus in a nutrient medium, containing agroindustrial wastes. Method: Biosynthesis of lipase in solid-state fermentation by Rhizopus arrhizus was investigated. The effect of different solid substrates, additional carbon and nitrogen source, particles size and moisture content of the medium on enzyme production was studied. Response surface methodology was applied for determination of the optimal values of moisture content and tryptone concentration. A procedure for efficient lipase extraction from the fermented solids was developed. Results: Highest lipase activity was achieved when wheat bran was used as a solid substrate. The addition of 1% (w/w) glucose and 5% (w/w) tryptone to the solid medium significantly increased lipase activity. The structure of the solid medium including particles size and moisture content significantly influenced lipase production. A mathematical model for the effect of moisture content and tryptone concentration on lipase activity was developed. Highest enzyme activity was achieved at 66% moisture and 5% (w/w) tryptone. The addition of the non-ionic surfactant Disponyl NP 3070 in the eluent for enzyme extraction from the fermented solids increased lipase activity about three folds. Conclusion: After optimization of the solid-state fermentation the achieved 1021.80 U/g lipase activity from Rhizopus arrhizus was higher and comparable with the activity of lipases, produced by other fungal strains. The optimization of the conditions and the use of low cost components in solid-state fermentation makes the process economicaly effective for production of lipase from the investigated strain Rhizopus arrhizus.

Solid-State Fermentation, Microbial Growth Kinetics

2014 ◽  
pp. 1-23
Author(s):  
David A. Mitchell ◽  
Deidre M. Stuart ◽  
Sibel Uludag-Demirer ◽  
Robert D. Tanner
Keyword(s):  
Solid State ◽  
Growth Kinetics ◽  
Solid State Fermentation ◽  
Microbial Growth ◽  
Microbial Growth Kinetics

Growth kinetics of phases in solid-state diffusion couples

1995 ◽  
Vol 152 (2) ◽  
pp. 385-392 ◽  
Author(s):  
V. H. Garcia ◽  
C. Scherer ◽  
P. M. Mors
Keyword(s):  
Solid State ◽  
Growth Kinetics ◽  
Solid State Diffusion ◽  
Diffusion Couples ◽  
State Diffusion ◽  
Kinetics Of

Kinetics of Solid-state Fermentation

2008 ◽  
pp. 48-73
Author(s):  
Jose A Rodriguez-Leon ◽  
Carlos R Soccol ◽  
Ashok Pandey ◽  
Daniel E Rodriguez
Keyword(s):  
Solid State ◽  
Solid State Fermentation ◽  
Kinetics Of
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