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Biological value is determined based on this formula. [4] [5] BV = ( N r / N a) * 100. Where: N a = nitrogen absorbed in proteins on the test diet N r = nitrogen incorporated into the body on the test diet. However direct measurement of N r is essentially impossible. It will typically be measured indirectly from nitrogen excretion in urine. [6]
As a value, NPU can range from 0 to 1 (or 100), with a value of 1 (or 100) indicating 100% utilization of dietary nitrogen as protein and a value of 0 an indication that none of the nitrogen supplied was converted to protein. Certain foodstuffs, such as eggs or milk, rate as 1 on an NPU chart.
Below is a list organised by food group and given in measurements of grams of protein per 100 grams of food portion. The reduction of water content has the greatest effect of increasing protein as a proportion of the overall mass of the food in question.
Protein consumed by animals is broken down to amino acids, which would be later used to synthesize new proteins. Protein is used to form cellular structures, fluids, [32] and enzymes (biological catalysts). Enzymes are essential to most metabolic processes, as well as DNA replication, repair, and transcription. [33] Protein contains 4 calories ...
Life scientists value biological data to provide molecular details in living organisms. Tools for DNA sequencing, gene expression (GE), bio-imaging, neuro-imaging , and brain-machine interfaces are all domains that utilize biological data, and model biological systems with high dimensionality.
For example, to find out how much sodium chloride contains 1500 mg of elemental sodium (the value of 1500 mg sodium is the adequate intake (AI) for an adult), we can use the proportion: 393.4 mg Na : 1000 mg NaCl = 1500 mg Na : x mg NaCl. Solving for x gives us the amount of sodium chloride that contains 1500 mg of elemental sodium:
Soybean protein isolate has a biological value of 74, whole soybeans 96, soybean milk 91, and eggs 97. [138] Graded seed. All spermatophytes, except for the family of grasses and cereals , contain 7S (vicilin) and 11S (legumin) soy protein-like globulin storage proteins; or only one of these globulin proteins.
Biological value; References This page was last edited on 28 March 2022, at 11:21 (UTC). Text is available under the Creative Commons Attribution ...