Bacterial Growth Curve microbiology Malayalam  | Log ,lag  & stationary phase in microbial growth
Channel: Mallu Medicos Lounge
Date: 2020-07-04

Bacterial Growth Curve microbiology | Log phase lag phase stationary phase in microbial growth

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Bacterial Growth curve has four phases:

1. Lag Phase
2. Log Phase / Exponential Phase
3. Stationary Phase
4. Death Phase

Lag Phase:
It is the early part of the growth. When culture is inoculated, there is no active cell division because the bacteria is preparing to divide.

Log Phase:
In this phase rapid exponential cell division occurs. Bacterial cell divides very rapidly utilizing the nutrients in the culture media and secreting waste products.

Stationary Phase:
When enough of the nutrients in the media is utilized and enough of the waste products accumulates, bacterial growth reaches stationary phase. In this stage rate of cell growth is approximately equals to the rate of cell death. That’s the reason we don’t see increase in the bacterial cell number.

Death Phase:
As the nutrients are used up and the accumulation of waste products, bacterial growth enters death phase. In this stage rate of cell death exceeds the rate of cell division. So there is overall decrease in the amount of bacteria in the culture.
bacterial growth curve microbiology
In this video, I will be discussing what the bacterial growth curve reflects, different phases & their significance.

Bacterial growth curve and microbial growth kinetics - This microbiology lecture is going to teach you about the bacterial growth curve and the microbial growth kinetics. The microbial growth curve consists of 4 phases.
Lag phase of the growth curve, Log phase of the bacterial growth curve which is also known as the exponential growth phase and the stationary phase of bacterial growth curve where the bacterial growth is about to stop. The last phase of microbial growth curve is the death phase where the cell death is complete and the bacterial population starts declining.
Stay tuned to know more about the bacterial growth curve microbiology.
Thank you for watching the video lecture on microbial growth curve microbiology.

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   Qualification
Maneesha M Joseph
 MSc MLT (Microbiology)
Assistant Professor 
Baby memorial college of allied Health science
Kozhikode
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