biological value: meaning, definition, pronunciation and examples
C1Scientific, Nutritional, Academic
Quick answer
What does “biological value” mean?
A measure of the proportion of absorbed protein from a food that is retained and used by the body for growth and maintenance.
Audio
Pronunciation
Definition
Meaning and Definition
A measure of the proportion of absorbed protein from a food that is retained and used by the body for growth and maintenance.
The efficiency with which the body can utilize the protein content of a specific food source. It compares the nitrogen used for tissue formation versus nitrogen absorbed from the food, serving as an indicator of protein quality.
Dialectal Variation
British vs American Usage
Differences
No significant difference in meaning. The term is identically used in scientific contexts in both varieties.
Connotations
Neutral, technical, and precise in both regions.
Frequency
Equally low-frequency outside of specialised fields like nutrition, dietetics, sports science, and agriculture.
Grammar
How to Use “biological value” in a Sentence
The biological value of [PROTEIN SOURCE] is [NUMBER].[PROTEIN SOURCE] has a biological value of [NUMBER].BV is used as an abbreviation.Vocabulary
Collocations
Examples
Examples of “biological value” in a Sentence
noun
British English
- The biological value of quinoa is surprisingly high for a plant-based protein.
- Researchers assessed the biological value of various insect flours.
American English
- Whey protein has one of the highest biological values of any food.
- The textbook outlined the method for calculating biological value.
Usage
Meaning in Context
Business
Used in marketing for premium sports nutrition supplements, baby formula, or specialised health foods (e.g., 'Our whey protein isolate boasts a high biological value.').
Academic
Central in research papers on human nutrition, animal husbandry, and food science to compare protein sources.
Everyday
Very rare. Might appear in advanced fitness or dieting discussions.
Technical
The primary context. Used in formulations, nutritional labelling, feed composition analysis, and biochemical research.
Vocabulary
Synonyms of “biological value”
Strong
Neutral
Weak
Vocabulary
Antonyms of “biological value”
Watch out
Common Mistakes When Using “biological value”
- Using 'biological value' to refer to the overall nutritional worth of a food (it's strictly about protein).
- Confusing it with 'nutrient density'.
- Pronouncing 'value' as /ˈvæl.juː/ instead of the standard /ˈvæl.juː/.
- Using it in non-protein contexts (e.g., 'the biological value of vitamins').
FAQ
Frequently Asked Questions
Egg protein is often used as the reference standard with a biological value of 100 (or 94 in some scales). Whey protein isolate can score slightly higher (104-110).
No. Protein content tells you how much protein is in the food. Biological value tells you how well your body can use that protein. A food can be high in protein but have a moderate BV.
Individual plant proteins often have a lower BV as they may lack one or more essential amino acids (incomplete). However, by combining different plant proteins (e.g., beans and rice), vegans can achieve a complete amino acid profile and a high effective BV for the meal.
The common abbreviation is 'BV'.
A measure of the proportion of absorbed protein from a food that is retained and used by the body for growth and maintenance.
Biological value is usually scientific, nutritional, academic in register.
Biological value: in British English it is pronounced /ˌbaɪ.əˌlɒdʒ.ɪ.kəl ˈvæl.juː/, and in American English it is pronounced /ˌbaɪ.əˌlɑː.dʒɪ.kəl ˈvæl.juː/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “None. The term is purely technical.”
Learning
Memory Aids
Mnemonic
Think: BIOlogical = body, VALUE = worth. How much 'body-worth' does this protein have? Eggs are the 'gold standard' of BV (100).
Conceptual Metaphor
PROTEIN QUALITY IS A NUMERICAL SCORE. THE BODY IS A REFINERY (extracting and using valuable components).
Practice
Quiz
What does 'biological value' specifically measure?