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Wilerson Sturm

Bio: Wilerson Sturm is an academic researcher from Federal University of Paraná. The author has contributed to research in topics: Solid-state fermentation & Fermentation. The author has an hindex of 6, co-authored 9 publications receiving 697 citations. Previous affiliations of Wilerson Sturm include Paraná Federal Institute of Education, Science and Technology.

Papers
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TL;DR: Analysis of growth parameters, media of cultivation, biomass composition and productivity and nutrients balance, and carbon metabolism in terms of carbon dioxide fixation and its destination in microalgae cultivations found carbon dioxide fixated was mainly used for microalgal biomass production.

477 citations

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TL;DR: The aim of this work was to develop an economical bioprocess to produce the bio-ethanol from soybean molasses at laboratory, pilot and industrial scales, and fermentation conditions were defined at the laboratory scale.

172 citations

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TL;DR: The specific growth rate and biomass oxygen yield decreased during fermentation, whereas an increase in the maintenance coefficient for the different employed carbon sources was concurrently observed.

71 citations

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TL;DR: Phytase production by Aspergillus niger F3 by solid state fermentation (SSF) on citrus peel was evaluated at pilot scale under different aeration conditions and air flow intensity was a key a factor that must be considered when scale-up of SSF is attempted.

24 citations

Journal ArticleDOI
TL;DR: The aeration by diffusion improved CA production by the three strains and specially developed for biotechnological processes analysis was used to perform the respirometric parameters measurement.
Abstract: Citric acid (CA) is one of the most important products of fermentation in the world. A great variety of agro-industrial residues can be used in solid state fermentation. Aspergillus niger parental strain (CCT 7716) and two strains obtained by mutagenesis (CCT 7717 and CCT 7718) were evaluated in Erlenmeyer flasks and glass columns using citric pulp (CP) as substrate/support, sugarcane molasses and methanol. Best results using glass columns (forced aeration) were found in the fourth day of fermentation: 278.4, 294.9 and 261.1 g CA/kg of dry CP with CCT 7716, CCT 7718 and CCT 7717, respectively. In Erlenmeyer flasks (aeration by diffusion) CA reached 410.7, 446.8 and 492.7 g CA/kg of dry CP with CCT 7716, CCT 7718 and CCT 7717, respectively. The aeration by diffusion improved CA production by the three strains. A data acquisition system specially developed for biotechnological processes analysis was used to perform the respirometric parameters measurement.

11 citations


Cited by
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Journal ArticleDOI
TL;DR: The practical problems that are facing the microalgae biofuel industry will be depicted, covering upstream to downstream activities by accessing the latest research reports and critical data analysis and several interlink solutions to the problems will be suggested with the purpose to revolutionize the entire microAlgae Biofuel industry towards long-term sustainability.

829 citations

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TL;DR: The present results suggested that the two microalgae be appropriate for mitigating CO(2) in the flue gases and biodiesel production.

690 citations

Journal ArticleDOI
TL;DR: Engineering strategies were applied to improve the CO(2) fixation rate and carbohydrate/lipid production of a Scenedesmus obliquus CNW-N isolate and Nitrogen starvation was employed to trigger the accumulation of lipid and carbohydrate.

648 citations

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TL;DR: The article reviews the current state-of-art scenario and perspectives on the development of bioprocesses and products in SSF and also discusses microbes employed in these processes, the types of bioreactors used for these and also presents the modeling and kinetics aspects.

610 citations

Journal ArticleDOI
TL;DR: This review focuses on cultivation and harvesting of cyanobacteria and microalgae, possible bio Fuels and co-products, challenges for cyanobacterial and microalgal biofuels and the approaches of genetic engineering and modifications to increase biofuel production.

501 citations