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In the death phase
As waste builds up and nutrient-rich media is depleted, the death phase is the point where the living cells stop metabolic functions and begin the process of death. As cells lyse and fill the culture with what was once on their insides, the environment changes one last time and exponential decay begRead more
As waste builds up and nutrient-rich media is depleted, the death phase is the point where the living cells stop metabolic functions and begin the process of death. As cells lyse and fill the culture with what was once on their insides, the environment changes one last time and exponential decay begins.
See lessDiauxie is
Diauxic growth, diauxie or diphasic growth is any cell growth characterized by cellular growth in two phases. Diauxic growth, meaning double growth, is caused by the presence of two sugars on a culture growth media, one of which is easier for the target bacterium to metabolize.
Diauxic growth, diauxie or diphasic growth is any cell growth characterized by cellular growth in two phases. Diauxic growth, meaning double growth, is caused by the presence of two sugars on a culture growth media, one of which is easier for the target bacterium to metabolize.
See lessAn open system in which the growth rate is maintained by adding a nutrient (present in limiting quantities) at the same rate as that medium containing micro-organisms is removed is called
A chemostat (from chemical environment is static) is a bioreactor to which fresh medium is continuously added, while culture liquid containing left over nutrients, metabolic end products and microorganisms is continuously removed at the same rate to keep the culture volume constant.
A chemostat (from chemical environment is static) is a bioreactor to which fresh medium is continuously added, while culture liquid containing left over nutrients, metabolic end products and microorganisms is continuously removed at the same rate to keep the culture volume constant.
See lessThe dilution rate, D is defined as(where F = volumetric flow rate, VR = total volume of culture in the reactor and μ specific growth rate)
The dilution rate is calculated by dividing the flow rate (how much media flows into the vessel per hour) by the culture volume. For example, using a volume of 300 ml a dilution rate of 0.1 means that 30 ml of media is added to the culture every hour.
The dilution rate is calculated by dividing the flow rate (how much media flows into the vessel per hour) by the culture volume. For example, using a volume of 300 ml a dilution rate of 0.1 means that 30 ml of media is added to the culture every hour.
See lessThe phenomenon in which substrates are used in a sequential manner is known as
Molecular layer deposition (MLD) is a vapour phase thin film deposition technique based on self-limiting surface reactions carried out in a sequential manner.
Molecular layer deposition (MLD) is a vapour phase thin film deposition technique based on self-limiting surface reactions carried out in a sequential manner.
See lessThe function of a mechanical seal is to
Mechanical seals are devices that are used to provide a seal at the point of entry or exit of a rotating shaft. Typically it is used to prevent the leakage of one high pressure fluid into a lower pressure fluid.
Mechanical seals are devices that are used to provide a seal at the point of entry or exit of a rotating shaft. Typically it is used to prevent the leakage of one high pressure fluid into a lower pressure fluid.
See lessA mixed fermentation is one, which produces
A type of fermentation called the mixed acid fermentation results in the formation of formic acid, acetic acid, lactic acid, succinic acid, ethanol, CO2 and H2 in a buffered medium. The combination of acids in the mixed acid fermentation usually lowers the pH of the culture below 4.2.
A type of fermentation called the mixed acid fermentation results in the formation of formic acid, acetic acid, lactic acid, succinic acid, ethanol, CO2 and H2 in a buffered medium. The combination of acids in the mixed acid fermentation usually lowers the pH of the culture below 4.2.
See lessThe monod model predicts that the specific growth rate
The Monod equation for the specific growth rate, Eq. (12.91), is analogous mathematically to the Michaelis–Menten expression for enzyme kinetics. In principle, therefore, the techniques described in Section 12.4 for determining vmax and Km for enzyme reaction can be applied for evaluation of μmax anRead more
The Monod equation for the specific growth rate, Eq. (12.91), is analogous mathematically to the Michaelis–Menten expression for enzyme kinetics. In principle, therefore, the techniques described in Section 12.4 for determining vmax and Km for enzyme reaction can be applied for evaluation of μmax and KS.
See lessIn the accelerated phase, cell starts to
Easy explanation: This is a brief transient period during which cells start growing slowly. In fact, acceleration phase connects the lag phase and log phase.
Easy explanation: This is a brief transient period during which cells start growing slowly. In fact, acceleration phase connects the lag phase and log phase.
See lessStationary phase is described as
Stationary phase in chromatography is the one which does not move with the sample whereas mobile phase in chromatography is one which moves with the sample. Example: In Paper Chromatography: The paper strip acts as "stationary phase" while the solvent act as "mobile phase" in paper chromatograRead more
Stationary phase in chromatography is the one which does not move with the sample whereas mobile phase in chromatography is one which moves with the sample. Example: In Paper Chromatography: The paper strip acts as “stationary phase” while the solvent act as “mobile phase” in paper chromatography.
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