Styrene (Plastics) GMP Flavour Standard

WHAT IS STYRENE FLAVOUR?

Styrene flavour is a chemical sensory defect that gives beverages a plastic-like, polystyrene or burnt-plastic aroma and taste.

It is caused by the monomer styrene, often resulting from the breakdown or migration of plastic packaging materials. It is typically described as:

– Plastic
– Polystyrene packaging
– Melted plastic
– Burning plastic
– Chemical

Even at trace levels, it renders beverages commercially unacceptable.

WHAT CAUSES STYRENE OFF-FLAVOUR?

The question “what causes styrene flavour?” is directly linked to contact between beverages and plastic materials.

Primary sources include:

– Plastic pipework
– Carbonation lines
– Dispensing lines
– Can linings
– Bottle linings
– Plastic packaging
– Slip agents used in packaging

When raw materials or finished drinks interact with these materials, styrene compounds can migrate into the liquid, creating a detectable plastic taint.

Microbial contamination

In rare cases, specific spoilage organisms can produce styrene during fermentation, though packaging is the most common culprit.

USING THE STYRENE GMP Flavour Standard FOR SENSORY TRAINING

The Styrene GMP Flavour Standard is essential for teams working with PET bottles, canned beverages, or draft systems. The FlavorActiV Styrene GMP Flavour Standard allows professional panels to:

– Recognise plastic taint at very low levels.
– Calibrate sensitivity to chemical defects.
– Distinguish packaging faults from fermentation issues.
– Detect contamination early in the production chain.

This improves fault detection speed, consistency, and product release decisions.

HOW TO RECOGNISE STYRENE OFF-FLAVOUR?(SENSORY TERMS)

Styrene contamination is typically identified using the following sensory descriptors:

– Styrene
– Plastic
– Polystyrene
– Burning plastic
– Melted plastic
– Chemical

These terms are standardised using the styrene GMP Flavour Standard so that quality teams speak a common sensory language.

WHAT ARE THE PROFESSIONAL APPLICATIONS OF THE STYRENE GMP Flavour Standard?

The styrene GMP Flavour Standard is widely used in:

– Breweries – detecting packaging and line contamination
– Soft drink production – preventing plastic taint during bottling
– RTD and canned beverages
– Wine and spirits bottling facilities
– Sensory panel training and validation
– Quality assurance laboratories

It helps manufacturers catch packaging-related faults before products reach retailers.

OTHER INFORMATION

Beer Flavour Wheel Number: 0121

Typical concentration: Taint level (normally absent in clean beverages)

Sensory icon: PET plastic bottle

Referenced by:
– American Society of Brewing Chemists (ASBC)
– European Brewing Chemists (EBC)

Note: FlavorActiV offers multiple styrene (plastic) GMP Flavour Standards to match different contamination profiles. Additional variants are available on request.