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Sterilization and Culture methods detailed
Rating: 3.4 out of 5(12 ratings)
24 students

Sterilization and Culture methods detailed

sterilization and culture media concepts
Created bySowjnya .
Last updated 7/2022
English

What you'll learn

  • Introduction sterilization
  • Definition and Methods
  • Physical Methods - Red Heat
  • Hot Air Oven
  • Moist heat and auto clave
  • Pasteurization
  • IR radiation
  • Non IR
  • Filtration
  • 5 types of Filtration
  • chemical method- two types of gases
  • Liquid stage
  • 4 types of Liquid chemicals
  • Applications
  • Introduction Culture methods
  • culture media definition and ingredients
  • types of media
  • physical media
  • semi solid media
  • solid media
  • chemical media 3 types
  • non synthetic media
  • special media 3 types
  • Enriched media
  • selective media
  • differential media
  • anaerobic media
  • Transport media
  • Antibiotic media
  • conclusion

Course content

1 section • 26 lectures • 2h 50m total length

  • Introduction3:47
  • DEFINITION AND METHODS11:22
  • Red heat flaming, Physical method continues6:13
  • Hot air oven8:10
  • Moist heat or auto clave11:47
  • Disinfectant types or Pasteurization explanation15:01
  • Radiation4:41

    Compare ionizing and non ionizing radiation as sterilization methods. Ionizing radiation uses gamma rays, X-rays, and cosmic rays to damage bacterial DNA, while thermal infrared sterilizes instruments via heat.

  • NONIR RADIATION5:41

    Explore non-ionizing radiation, including infrared and ultraviolet, and their roles in sterilizing syringes, catheters, and surfaces. Learn about laminar airflow chambers and basic radiation concepts.

  • FILTRATION6:14
  • CHEMICAL METHOD5:28
  • CHEMICAL METHOD CONTINUEOUS6:41
  • APPLICATIONS11:46
  • Culture Methods Intro3:51

    Culture media introduction defines culture media and explains its use in microbiology, highlighting Louis Pasteur and Robert Koch's contributions and the concept of liquid artificial culture medium.

  • Culture Media9:47
  • Types Media Part17:09
  • Types Media Part26:13

    Explore physical media types - liquid, semi-solid, and solid - and note that semi-solid media use 0.2-0.5% concentration to study motility, with examples like oxidation-fermentation, monitor medium, and motility medium.

  • Types of Media Part38:01

    Explore liquid, semi-solid, and solid media, with agar at about 1.3% as a solidifying agent, enabling colony isolation, pure cultures, and identification on nutrient, chocolate, and MacConkey agars.

  • Types of Media Part46:29
  • Part 4 Continues Non synthetic Media1:03

    Explore non synthetic media defined as complex media with unknown composition, derived from biological sources such as blood, milk, or pepto, using yeast extract as a key example.

  • Types of Media Part54:59
  • Types of Media Part 64:15

    Explain basal media with carbon and nitrogen sources and how enriched media use additives like blood serum or egg yolk to grow fastidious microorganisms, with chocolate media as an example.

  • Types of Media Part76:39
  • Types of Media Part88:29
  • Types of Media Part95:45
  • Types of Media Part101:49
  • Conclusion8:50

Requirements

  • All life science students

Description

Introduction sterilization

Definition and Methods

Physical Methods - Red Heat

Hot Air Oven

Moist heat and auto clave

Pasteurization

IR radiation

Non IR

Filtration

5 types of Filtration

chemical method- two types of gases

Liquid stage

4 types of Liquid chemicals

Applications

Introduction Culture methods

culture media definition and ingredients

types of media

physical media

semi solid media

solid media

chemical media  3 types

non synthetic media

special media 3 types

Enriched media

selective media

differential media

anaerobic media

Transport media

Antibiotic media

conclusion


Two major contributions to the art of sterilization came in the 1860’s

when the French chemist and microbiologist Louis Pasteur

wrote extensively on how germs cause disease and the English physician, Joseph Lister,

developed a technique that used carbolic acid as a spray to disinfect instruments and so on. (refer video slides all full info)


The first liquid artificial culture medium was created by Louis Pasteur in 1860

Previously bacterial growth on daily materials such as some foods had been observed

Louis Pasteur was a French chemist and microbiologist renowned for his discoveries of the principles of vaccination microbial fermentation and pasteurization

The German physician Robert Koch (December 11 1843 — May 27 1910) is considered the father of modern bacteriology for his work demonstrating that specific microbes are responsible for causing specific diseases

Koch discovered the life cycle of the bacteria responsible for anthrax and identified the bacteria that cause tuberculosis and cholera

Culture media

A microbiological culture medium is a substance that encourages the growth support and survival of microorganisms

Culture media contains nutrients growth promoting factors energy sources buffer salts minerals metals and gelling agents (for solid media)

Different types of culture media are typically divided based on the physical state of the media

Liquid culture media

commonly called broth Solid and semi-solid culture media commonly called agar. (refer video slides all full info)






Who this course is for:

  • All life science students

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