Temperature variations and amyloglucosidase levels at different bed depths in a solid state fermentation system

Development and temperature gradient online monitoring of a vehicular rotary solid‐state bioreactor: a novel device for large‐scale preparation of Aspergillus niger spore inoculum

“…The multipoint online temperature measurement of solid‐state bioreactors has garnered research interest for a long time . However, because previous reports had not constructed matrices of temperature sensors, an accurate and dense 4D inner bed profile including radius, height, temperature and cultivation time was not provided by real measurement.…”

“…5(a) The multipoint online temperature measurement of solid-state bioreactors has garnered research interest for a long time. [22][23][24][25]27 However, because previous reports had not constructed matrices of temperature sensors, an accurate and dense 4D inner bed profile including radius, height, temperature and cultivation time was not provided by real measurement. In the present work, benefitting from the capacity of 16P-TMS, each batch had more than 170 000 data, enough to provide the 4D profile describing the temperature evolution process at all the temperature measuring points during the whole cultivation batch.…”

Development and temperature gradient online monitoring of a vehicular rotary solid‐state bioreactor: a novel device for large‐scale preparation of Aspergillus niger spore inoculum

“…The multipoint online temperature measurement of solid‐state bioreactors has garnered research interest for a long time . However, because previous reports had not constructed matrices of temperature sensors, an accurate and dense 4D inner bed profile including radius, height, temperature and cultivation time was not provided by real measurement.…”

“…5(a) The multipoint online temperature measurement of solid-state bioreactors has garnered research interest for a long time. [22][23][24][25]27 However, because previous reports had not constructed matrices of temperature sensors, an accurate and dense 4D inner bed profile including radius, height, temperature and cultivation time was not provided by real measurement. In the present work, benefitting from the capacity of 16P-TMS, each batch had more than 170 000 data, enough to provide the 4D profile describing the temperature evolution process at all the temperature measuring points during the whole cultivation batch.…”

PC–BASED DATA ACQUISITION FOR a SOLID SUBSTRATE CULTIVATION DEEP BED REACTOR

“…Temperature, moisture content, nutrient availability, and oxygen concentration are important factors to consider in the development of an optimal SSC production process (Prior et al, 1992). Progress in SSC implementation is impeded by limited information as to the engineering, reactor design, instrumentation, process controls, and heat and mass transfer of these systems (Durand et al, 1997;Ghildyal et al, 1993). Measurement and control of the major variables such as temperature, moisture, and oxygen is challenging because of the thermal and structural properties of the substrates and the heterogeneity of the overall system.…”

Modelling fungal solid-state fermentation: the role of inactivation kinetics

“…Since the model takes oxygen consumption into account, a decrease of oxygen concentration can be calculated with Eq. (20). It hardly needs noting that the effect of oxygen concentration on biomass growth and activity is not included in the models.…”

“…The oxygen-concentration and enzyme-activity pro®les Ghildyal et al measured at different depths of up to 0.24 m demonstrated that oxygen is not the growth-limiting parameter in a wheat bran bed. In a separate report these authors concluded that temperature is the key parameter [20]. Whether oxygen concentration plays a role in the formation of biomass in SSF in general does not only depend on oxygen concentration, oxygen diffusion rate, rate of heat transfer and oxygen consumption rate, but also on the sensitivity of the biomass to lower oxygen concentrations which is expected to be signi®cant [24].…”

Development and temperature gradient online monitoring of a vehicular rotary solid‐state bioreactor: a novel device for large‐scale preparation of Aspergillus niger spore inoculum

“…The multipoint online temperature measurement of solid‐state bioreactors has garnered research interest for a long time . However, because previous reports had not constructed matrices of temperature sensors, an accurate and dense 4D inner bed profile including radius, height, temperature and cultivation time was not provided by real measurement.…”

“…5(a) The multipoint online temperature measurement of solid-state bioreactors has garnered research interest for a long time. [22][23][24][25]27 However, because previous reports had not constructed matrices of temperature sensors, an accurate and dense 4D inner bed profile including radius, height, temperature and cultivation time was not provided by real measurement. In the present work, benefitting from the capacity of 16P-TMS, each batch had more than 170 000 data, enough to provide the 4D profile describing the temperature evolution process at all the temperature measuring points during the whole cultivation batch.…”

PC–BASED DATA ACQUISITION FOR a SOLID SUBSTRATE CULTIVATION DEEP BED REACTOR

“…Temperature, moisture content, nutrient availability, and oxygen concentration are important factors to consider in the development of an optimal SSC production process (Prior et al, 1992). Progress in SSC implementation is impeded by limited information as to the engineering, reactor design, instrumentation, process controls, and heat and mass transfer of these systems (Durand et al, 1997;Ghildyal et al, 1993). Measurement and control of the major variables such as temperature, moisture, and oxygen is challenging because of the thermal and structural properties of the substrates and the heterogeneity of the overall system.…”

Modelling fungal solid-state fermentation: the role of inactivation kinetics

“…Since the model takes oxygen consumption into account, a decrease of oxygen concentration can be calculated with Eq. (20). It hardly needs noting that the effect of oxygen concentration on biomass growth and activity is not included in the models.…”

“…The oxygen-concentration and enzyme-activity pro®les Ghildyal et al measured at different depths of up to 0.24 m demonstrated that oxygen is not the growth-limiting parameter in a wheat bran bed. In a separate report these authors concluded that temperature is the key parameter [20]. Whether oxygen concentration plays a role in the formation of biomass in SSF in general does not only depend on oxygen concentration, oxygen diffusion rate, rate of heat transfer and oxygen consumption rate, but also on the sensitivity of the biomass to lower oxygen concentrations which is expected to be signi®cant [24].…”

Development and temperature gradient online monitoring of a vehicular rotary solid‐state bioreactor: a novel device for large‐scale preparation of Aspergillus niger spore inoculum

“…The multipoint online temperature measurement of solid‐state bioreactors has garnered research interest for a long time . However, because previous reports had not constructed matrices of temperature sensors, an accurate and dense 4D inner bed profile including radius, height, temperature and cultivation time was not provided by real measurement.…”

“…5(a) The multipoint online temperature measurement of solid-state bioreactors has garnered research interest for a long time. [22][23][24][25]27 However, because previous reports had not constructed matrices of temperature sensors, an accurate and dense 4D inner bed profile including radius, height, temperature and cultivation time was not provided by real measurement. In the present work, benefitting from the capacity of 16P-TMS, each batch had more than 170 000 data, enough to provide the 4D profile describing the temperature evolution process at all the temperature measuring points during the whole cultivation batch.…”

PC–BASED DATA ACQUISITION FOR a SOLID SUBSTRATE CULTIVATION DEEP BED REACTOR

“…Temperature, moisture content, nutrient availability, and oxygen concentration are important factors to consider in the development of an optimal SSC production process (Prior et al, 1992). Progress in SSC implementation is impeded by limited information as to the engineering, reactor design, instrumentation, process controls, and heat and mass transfer of these systems (Durand et al, 1997;Ghildyal et al, 1993). Measurement and control of the major variables such as temperature, moisture, and oxygen is challenging because of the thermal and structural properties of the substrates and the heterogeneity of the overall system.…”

Modelling fungal solid-state fermentation: the role of inactivation kinetics

“…Since the model takes oxygen consumption into account, a decrease of oxygen concentration can be calculated with Eq. (20). It hardly needs noting that the effect of oxygen concentration on biomass growth and activity is not included in the models.…”

“…The oxygen-concentration and enzyme-activity pro®les Ghildyal et al measured at different depths of up to 0.24 m demonstrated that oxygen is not the growth-limiting parameter in a wheat bran bed. In a separate report these authors concluded that temperature is the key parameter [20]. Whether oxygen concentration plays a role in the formation of biomass in SSF in general does not only depend on oxygen concentration, oxygen diffusion rate, rate of heat transfer and oxygen consumption rate, but also on the sensitivity of the biomass to lower oxygen concentrations which is expected to be signi®cant [24].…”