Total nitrogen vs. amino-acid profile as indicator of protein content of beef |
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| Authors: | Nicolette G. Hall,Hettie C. Schö nfeldt |
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| Affiliation: | Department of Animal and Wildlife Sciences, University of Pretoria, Pretoria, South Africa; Institute of Food, Nutrition and Well-being, University of Pretoria, Pretoria, South Africa |
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| Abstract: | In most cited food composition studies and tables, the proximate system measures protein as total nitrogen (N) (determined by Kjeldahl or Dumas method) multiplied by a specific factor. A factor of 6.25 is used for determining total protein from total N (Jones, Munsey, & Walker, 1942). Although more expensive, it is considered more accurate to base protein content of foods on amino acid data (Greenfield & Southgate, 2003). |
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| Keywords: | Nitrogen Amino acid Protein content Beef South Africa |
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