Microbiological Media

Brewing Microbiology 101

This module is part of the Brewing Microbiology 101 programme and can be taken individually or as part of the full course.

✔ On-demand, self-paced learning ✔ 3 structured lessons ✔ Designed for Quality and Technical teams ✔ Suitable for Breweries of all Sizes

Microbiological testing in breweries depends on the ability to grow and detect microorganisms reliably.

However, not all microorganisms grow equally well on every culture medium.

Different spoilage yeasts and bacteria have unique nutritional requirements and growth conditions. If the wrong microbiological media are used, contamination may go undetected, even when microorganisms are present.

Understanding which microorganisms pose risks to beer, and selecting appropriate culture media to detect them, is therefore essential for effective brewery microbiology.

This module introduces the metabolic preferences of key microorganisms relevant to brewing and explains how microbiological media are used to detect them. It also explores the strengths and limitations of different media types, and why careful media selection and validation are critical for reliable microbiological testing.

You’ll learn how to:

Module Content

1 Section #1
2 Section #2
3 Section #3
Section #1

Key Microorganisms for Culturing

This section introduces the main microorganisms relevant to brewery microbiology, including spoilage yeasts and bacterial groups that can affect beer quality. You’ll learn how these organisms are classified, how they impact beer, and how risk levels vary between different microbial groups.

Section #2

Microbiological Media

This section explains how microbiological media are used to grow and detect microorganisms in brewery samples. You’ll learn about common general media, brewery-specific media, and specialised media designed to detect particular groups of bacteria and yeast. The section also explores how media composition influences microbial growth and why selecting the right media is essential for effective testing.

Section #3

Media Limitations

This section examines the practical limitations of microbiological culture media. You’ll learn why media are not perfectly consistent, how growth conditions can influence detection, and why some microorganisms may be missed. The section also explains how to verify and validate media performance to ensure it meets the needs of brewery microbiology programmes.

Who Is This Module Designed For?

This module is designed for professionals working in brewing and beverage production who want to strengthen their understanding of brewery hygiene and contamination control.

Whether you are new to brewery microbiology or looking to reinforce best practices, this module provides practical knowledge to help maintain consistent hygiene standards and protect beer quality.

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3 lessons · 90-day access · Module certificate
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