biological value: meaning, definition, pronunciation and examples

C1
UK/ˌbaɪ.əˌlɒdʒ.ɪ.kəl ˈvæl.juː/US/ˌbaɪ.əˌlɑː.dʒɪ.kəl ˈvæl.juː/

Scientific, Nutritional, Academic

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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.

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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

strong
high biological valuelow biological valuebiological value ofbiological value scoremeasure/determine/calculate biological value
medium
protein with a high biological valuefoods of high biological valueimprove the biological valuecomparative biological value
weak
biological value conceptbiological value ratingbiological value assessmentbiological value data

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

protein utilization score

Neutral

protein quality indexnet protein utilization (NPU, related but not identical)protein efficiency ratio (PER, related)

Weak

nitrogen retention value

Vocabulary

Antonyms of “biological value”

protein deficiencyincomplete protein (conceptual antonym)

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

Fill in the gap
For muscle repair, sports nutritionists recommend consuming proteins with a high , such as those found in eggs, dairy, and lean meats.
Multiple Choice

What does 'biological value' specifically measure?