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Recalculated Nitrogen Conversion Factors for Several Soybean Protein Products

C.V. Morr

Open publisher page 32 citations

Abstract

ABSTRACT Amino acid composition and micro‐Kjeldahl N contents of various soybean protein products are used for calculating N conversion factors by the Factor Method and Kjeldahl Method. Efforts were made to refine these methods and to minimize the magnitude of the discrepancies within these N conversion factors. Recalculated N conversion factors by the Factor Method ranged from 5.66–5.80, and by the Kjeldahl Method from 5.66–5.79. It is recommended that these conversion factors be used (rather than the common 6.25 factor) for converting N values to protein content in soy protein‐containing products.

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What this paper is about

ABSTRACT Amino acid composition and micro‐Kjeldahl N contents of various soybean protein products are used for calculating N conversion factors by the Factor Method and Kjeldahl Method. Efforts were made to refine these methods and to minimize the magnitude of the discrepancies within these N conversion factors. Recalculated N conversion factors by the Factor Method ranged from 5.66–5.80, and by the Kjeldahl Method from 5.66–5.79. It is recommended that these conversion factors be used (rather than the common 6.25 factor) for converting N values to protein content in soy protein‐containing products.

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Available abstract

ABSTRACT Amino acid composition and micro‐Kjeldahl N contents of various soybean protein products are used for calculating N conversion factors by the Factor Method and Kjeldahl Method. Efforts were made to refine these methods and to minimize the magnitude of the discrepancies within these N conversion factors. Recalculated N conversion factors by the Factor Method ranged from 5.66–5.80, and by the Kjeldahl Method from 5.66–5.79. It is recommended that these conversion factors be used (rather than the common 6.25 factor) for converting N values to protein content in soy protein‐containing products.

Key concepts: Kjeldahl method, Conversion factor, Nitrogen, Chemistry, Soy protein, Food science, Amino acid, Mathematics

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