biacetyl: meaning, definition, pronunciation and examples
C2+ (Very Rare, Technical/Specialist)Formal/Technical
Quick answer
What does “biacetyl” mean?
A naturally occurring organic compound with the formula (CH₃CO)₂, responsible for a characteristic buttery flavor and aroma.
Audio
Pronunciation
Definition
Meaning and Definition
A naturally occurring organic compound with the formula (CH₃CO)₂, responsible for a characteristic buttery flavor and aroma.
A chemical compound used as a flavoring agent in foods like margarine and microwave popcorn, and also used in brewing and wine chemistry to gauge fermentation. In a broader scientific context, it refers to a diketone with two acetyl groups.
Dialectal Variation
British vs American Usage
Differences
No significant lexical or usage differences. Spelling is identical.
Connotations
None beyond its technical definition.
Frequency
Equally rare and specialized in both dialects.
Grammar
How to Use “biacetyl” in a Sentence
Biacetyl is formed during {process}.The {product} contains biacetyl.Analysts measured the biacetyl concentration in the {sample}.Vocabulary
Collocations
Usage
Meaning in Context
Business
Rare, used in food manufacturing and flavoring industry contracts or specifications.
Academic
Common in chemistry, biochemistry, and food science journals and textbooks.
Everyday
Virtually never used. A layperson might describe it as 'that chemical that makes things taste buttery'.
Technical
Standard term in flavor chemistry, brewing science, and analytical chemistry.
Vocabulary
Synonyms of “biacetyl”
Strong
Neutral
Weak
Vocabulary
Antonyms of “biacetyl”
Watch out
Common Mistakes When Using “biacetyl”
- Misspelling as 'biacytel' or 'byacetyl'.
- Incorrect pronunciation with a hard 'c' (/k/) sound.
FAQ
Frequently Asked Questions
At very high occupational exposure levels (e.g., in flavoring factories), it has been linked to respiratory illness. In the tiny amounts present in food, it is generally recognized as safe (GRAS) by regulatory bodies.
There is no chemical difference; 'biacetyl' and 'diacetyl' are two names for the exact same compound (2,3-butanedione). 'Diacetyl' is the more commonly used term in industry.
Yes, in small amounts it contributes a desirable buttery or butterscotch flavor in some ales. In larger amounts, it is considered an off-flavor, tasting like rancid butter or movie theatre popcorn.
Yes, it is a natural by-product of fermentation (found in beer, wine, yogurt) and is also present in some fruits and dairy products. It can also be synthesized for use as a flavor additive.
A naturally occurring organic compound with the formula (CH₃CO)₂, responsible for a characteristic buttery flavor and aroma.
Biacetyl is usually formal/technical in register.
Biacetyl: in British English it is pronounced /ˌbaɪ.əˈsiː.taɪl/, and in American English it is pronounced /ˌbaɪ.əˈsiː.t̬əl/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Think: 'BY-A-SEAT-ill'. You need TWO ('bi-') ACETYL groups to get that BUTTERY taste.
Conceptual Metaphor
COMPOUND IS A FLAVOR SIGNAL
Practice
Quiz
In which field is the term 'biacetyl' most frequently used?