reductase test: meaning, definition, pronunciation and examples
Very LowTechnical/Scientific
Quick answer
What does “reductase test” mean?
A laboratory procedure designed to detect the presence of reductase enzymes.
Audio
Pronunciation
Definition
Meaning and Definition
A laboratory procedure designed to detect the presence of reductase enzymes.
Specifically, a rapid biochemical test, commonly performed on milk, to assess bacterial contamination by measuring the activity of reductase enzymes produced by microorganisms, which catalyze color changes in a redox indicator dye.
Dialectal Variation
British vs American Usage
Differences
No significant lexical differences; both use the same term. Potential minor spelling differences in related technical documentation (e.g., 'colour' vs. 'color').
Connotations
Purely technical, with no regional connotative differences.
Frequency
Equally rare and specialised in both dialects, used only within relevant scientific and agricultural fields.
Grammar
How to Use “reductase test” in a Sentence
The technician performed a reductase test on the sample.The milk failed the reductase test due to high microbial load.Vocabulary
Collocations
Examples
Examples of “reductase test” in a Sentence
verb
British English
- We need to reductase-test these milk samples before noon.
- The batch was reductase-tested and found to be satisfactory.
American English
- The lab will reductase-test the specimens tomorrow.
- All incoming raw milk is routinely reductase-tested.
adjective
British English
- The reductase-test results are pending.
- Follow the standard reductase-test protocol.
American English
- The reductase test procedure is well-documented.
- We observed a positive reductase test reaction.
Usage
Meaning in Context
Business
Used in dairy industry quality control reports.
Academic
Used in microbiology, food science, and agricultural research papers and textbooks.
Everyday
Virtually never used in everyday conversation.
Technical
The primary context, detailing methodology and results in lab settings.
Vocabulary
Synonyms of “reductase test”
Strong
Neutral
Weak
Vocabulary
Antonyms of “reductase test”
Watch out
Common Mistakes When Using “reductase test”
- Misspelling as 'reduction test' or 'reductive test'.
- Using it as a general term for any enzyme test.
- Incorrect pronunciation stressing 'duct' (/ˈdʌkt/) instead of 'duce' (/dʌkˈteɪz/).
FAQ
Frequently Asked Questions
A positive test (rapid decolorization) indicates a high level of bacterial contamination, as many bacteria produce reductase enzymes.
While overwhelmingly associated with milk quality testing, the principle of using redox dyes to detect reductase activity can be applied in other microbiological contexts, though it is not commonly referred to as simply a 'reductase test' elsewhere.
They are redox indicator dyes. In their oxidized states, they are blue (methylene blue) or blue-purple (resazurin). When reduced by bacterial enzymes, methylene blue becomes colorless, and resazurin turns pink then colorless.
The time varies. A standard methylene blue reductase test can take up to several hours. The resazurin test (also called the 'one-hour test') is faster, providing results typically within 10 minutes to one hour.
A laboratory procedure designed to detect the presence of reductase enzymes.
Reductase test is usually technical/scientific in register.
Reductase test: in British English it is pronounced /rɪˈdʌkteɪz tɛst/, and in American English it is pronounced /rɪˈdʌkteɪz tɛst/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Think: REDUCTase REDUCES a blue dye to a colorless (or pink) state, TESTing for germs.
Conceptual Metaphor
A BACTERIAL STOPWATCH (the speed of the color change indicates the level of contamination).
Practice
Quiz
What is the primary purpose of a standard reductase test in the dairy industry?