Inoculum

Definition

Inoculum is the material used to initiate a microbial culture. It typically consists of cells or spores introduced into a growth medium.

5 Must Know Facts For Your Next Test

1. An inoculum is essential for starting microbial cultures in laboratory settings.
2. The size and viability of the inoculum can significantly affect microbial growth rates and outcomes.
3. Inocula must be free from contaminants to ensure accurate experimental results.
4. In industrial microbiology, controlled inocula are used to produce consistent fermentation products.
5. Preparation methods for inocula vary depending on the type of microorganism and the intended application.

Review Questions

• What is an inoculum and why is it important in microbial cultures?
• How does the size of an inoculum affect microbial growth?
• Why must an inoculum be free from contaminants?

Related terms

Culture Medium: A nutrient-rich solution or solid that supports the growth of microorganisms.

Incubation Period: The time during which microorganisms grow after being inoculated into a culture medium.

Sterilization: The process of eliminating all forms of life, including microbial contaminants, from a surface or medium.