The proportion of absorbed protein your body actually uses for maintenance and growth.
Biological value (BV) measures the percentage of absorbed protein that is retained and utilized by the body for essential functions. It evaluates how efficiently dietary protein is converted into body tissue and proteins.
Biological value is a step beyond digestibility—it doesn't just measure absorption, but actual utilization. Even if protein is well-digested and absorbed, the body may not retain all of it; some amino acids may be oxidized for energy or excreted. BV is expressed as a percentage, with egg protein serving as the reference standard (BV = 100). The biological value depends on the amino acid profile, particularly the presence of essential amino acids in the right proportions. Foods with complete amino acid profiles and proper ratios show higher biological values. This metric is especially important for athletes and those seeking to maximize muscle protein synthesis.
Indicates the efficiency of protein utilization for building and maintaining body tissues, enzymes, and hormones.
Prioritize complete proteins containing all nine essential amino acids for optimal biological value. Combine incomplete plant proteins (rice with beans) to create a complete amino acid profile. Include high-BV proteins in post-workout meals to maximize muscle recovery.
Biological value measures not just absorption, but actual utilization of protein by your body.
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