A Model of the Effect of the Microbial Biomass on the Isotherm of the Fermenting Solids in Solid-State Fermentation
We compare isotherms for soybeans and soybeans fermented with Rhizopus oryzae, showing that in solid-state fermentation the biomass affects the isotherm of the fermenting solids. Equations are developed to calculate, for a given overall water content of the fermenting solids, the water contents of t...
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| Format: | Article |
| Language: | English |
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University of Zagreb Faculty of Food Technology and Biotechnology
2006-01-01
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| Series: | Food Technology and Biotechnology |
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| Online Access: | http://hrcak.srce.hr/file/162253 |
| _version_ | 1827614295661215744 |
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| author | Barbara Celuppi Marques Marcelo Calide Barga Wellington Balmant Luiz Fernando de Lima Luz Jr Nadia Krieger David Alexander Mitchell |
| author_facet | Barbara Celuppi Marques Marcelo Calide Barga Wellington Balmant Luiz Fernando de Lima Luz Jr Nadia Krieger David Alexander Mitchell |
| author_sort | Barbara Celuppi Marques |
| collection | DOAJ |
| description | We compare isotherms for soybeans and soybeans fermented with Rhizopus oryzae, showing that in solid-state fermentation the biomass affects the isotherm of the fermenting solids. Equations are developed to calculate, for a given overall water content of the fermenting solids, the water contents of the biomass and residual substrate, as well as the water activity. A case study, undertaken using a mathematical model of a well-mixed bioreactor, shows that if water additions are made on the basis of the assumption that fermenting solids have the same isotherm as the substrate itself, poor growth can result since the added water does not maintain the water activity at levels favorable for growth. We conclude that the effect of the microbial biomass on the isotherm of the fermenting solids must be taken into account in mathematical models of solid-state fermentation bioreactors. |
| first_indexed | 2024-03-09T08:52:52Z |
| format | Article |
| id | doaj.art-2a0606b65d5a463483721c5100ed5d96 |
| institution | Directory Open Access Journal |
| issn | 1330-9862 1334-2606 |
| language | English |
| last_indexed | 2024-03-09T08:52:52Z |
| publishDate | 2006-01-01 |
| publisher | University of Zagreb Faculty of Food Technology and Biotechnology |
| record_format | Article |
| series | Food Technology and Biotechnology |
| spelling | doaj.art-2a0606b65d5a463483721c5100ed5d962023-12-02T13:52:28ZengUniversity of Zagreb Faculty of Food Technology and BiotechnologyFood Technology and Biotechnology1330-98621334-26062006-01-01444457463A Model of the Effect of the Microbial Biomass on the Isotherm of the Fermenting Solids in Solid-State FermentationBarbara Celuppi MarquesMarcelo Calide BargaWellington BalmantLuiz Fernando de Lima Luz JrNadia KriegerDavid Alexander MitchellWe compare isotherms for soybeans and soybeans fermented with Rhizopus oryzae, showing that in solid-state fermentation the biomass affects the isotherm of the fermenting solids. Equations are developed to calculate, for a given overall water content of the fermenting solids, the water contents of the biomass and residual substrate, as well as the water activity. A case study, undertaken using a mathematical model of a well-mixed bioreactor, shows that if water additions are made on the basis of the assumption that fermenting solids have the same isotherm as the substrate itself, poor growth can result since the added water does not maintain the water activity at levels favorable for growth. We conclude that the effect of the microbial biomass on the isotherm of the fermenting solids must be taken into account in mathematical models of solid-state fermentation bioreactors.http://hrcak.srce.hr/file/162253cornisothermsmathematical modellingRhizopus oryzaesoybeansSSF |
| spellingShingle | Barbara Celuppi Marques Marcelo Calide Barga Wellington Balmant Luiz Fernando de Lima Luz Jr Nadia Krieger David Alexander Mitchell A Model of the Effect of the Microbial Biomass on the Isotherm of the Fermenting Solids in Solid-State Fermentation Food Technology and Biotechnology corn isotherms mathematical modelling Rhizopus oryzae soybeans SSF |
| title | A Model of the Effect of the Microbial Biomass on the Isotherm of the Fermenting Solids in Solid-State Fermentation |
| title_full | A Model of the Effect of the Microbial Biomass on the Isotherm of the Fermenting Solids in Solid-State Fermentation |
| title_fullStr | A Model of the Effect of the Microbial Biomass on the Isotherm of the Fermenting Solids in Solid-State Fermentation |
| title_full_unstemmed | A Model of the Effect of the Microbial Biomass on the Isotherm of the Fermenting Solids in Solid-State Fermentation |
| title_short | A Model of the Effect of the Microbial Biomass on the Isotherm of the Fermenting Solids in Solid-State Fermentation |
| title_sort | model of the effect of the microbial biomass on the isotherm of the fermenting solids in solid state fermentation |
| topic | corn isotherms mathematical modelling Rhizopus oryzae soybeans SSF |
| url | http://hrcak.srce.hr/file/162253 |
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