Description
Estimate protein from nitrogen after nonprotein correction.
A food nutrient amount depends on mass, composition, retention and the chosen reference or exchange convention. Nitrogen-derived protein and a single amino-acid ratio are analytical terms rather than complete measures of dietary adequacy.
Estimate protein from nitrogen after nonprotein correction.
When to use this tool
Use Protein Nitrogen Explicit Factor Term when checking a supplied nutrient amount, protein factor or reporting normalization.
How to use the tool and how it works
- Enter nitrogenMass, conversionFactor, nonproteinNitrogen. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read netNitrogen, estimatedProtein. Use the output convention below.
Estimate protein from nitrogen after nonprotein correction. Require nonnegative nonproteinNitrogen <= nitrogenMass and positive conversionFactor; estimatedProtein = (nitrogenMass-nonproteinNitrogen)*factor.1
Nitrogen-based protein estimates depend on analytical assumptions and a suitable conversion factor; food composition and nonprotein nitrogen can matter.2
| Input field | Meaning and units | Accepted input |
|---|---|---|
| nitrogenMass | Nitrogen Mass | Required. Finite number. |
| conversionFactor | Positive supplied protein-mass/nitrogen-mass factor; select an appropriate analytical basis. | Required. Finite number; strictly above 0. |
| nonproteinNitrogen | Nonprotein Nitrogen | Required. Finite number; minimum 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| netNitrogen | Net Nitrogen | Required. Finite number. |
| estimatedProtein | Estimated protein mass in the same mass unit as the supplied nitrogen masses. | Required. Finite number. |
{
"input": {
"nitrogenMass": 10,
"conversionFactor": 6.25,
"nonproteinNitrogen": 2
},
"output": {
"netNitrogen": 8,
"estimatedProtein": 50
}
}Limitations and assumptions
- The nitrogen-to-protein factor is supplied and food-specific; no analytical or dietary adequacy is inferred.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Use appropriate food-composition and analytical sources, and professional dietary guidance for individual requirements or treatment plans.
References
Similar or alternative tools
- Protein Factor Source Version
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- Amino Acid Score One Reference Ratio
Return one amino acid's measured-to-reference ratio and percentage score.