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  • proper n. A surname.


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  • The protein content was determined by precipitating with a solution of CaSO4 (6 percent) and NaOH (1.25 percent); the precipitate was analyzed by the Kjeldahl method.

    12 Cassava Processing in Africa

  • The dried samples were analysed for their crude protein content by the micro-Kjeldahl method (37).

    Chapter 7

  • In those cases in which the substitute is made by admixture with gelatin or liquid glue the quantity of other organic matter obtained can be checked by a Kjeldahl determination of the total nitrogen.

    Scientific American Supplement, No. 821, September 26, 1891

  • The remaining part of the operation is as in the ordinary Kjeldahl process.

    Nitro-Explosives: A Practical Treatise

  • ~ An approximate determination of the albuminous matters may be made by precipitating with basic lead acetate as already described, and determining the nitrogen by the Kjeldahl method; the nitrogen multiplied by 6.25 gives the amount of albuminous matter in the precipitate.

    Nitro-Explosives: A Practical Treatise

  • Finally, 0.7 grm. of mercury is added, and the process continued in the usual way, according to Kjeldahl; that is, the liquid is distilled until all the ammonia has passed over, and is absorbed in the standard acid.

    Nitro-Explosives: A Practical Treatise

  • Page view page image: nitrogen (Kjeldahl), uric acid (Hopkins-Folin), ammonia (Folin, and formaldehyde methods), chlorids, and total acidity of urine (Folin).

    University of Virginia Record

  • Determine nitrogen in 3 grams of the sample by the Kjeldahl or Gunning method.

    All About Coffee

  • Traditionally, the Kjeldahl method is used to determine protein content, but the Association of Official Analytical Chemists (AOAC) has added the Dumas combustion technique as a recognized method (method 992.15) for such analyses.


  • Accurate quantitative determinations are required of urea (Folin), total nitrogen (Kjeldahl), uric acid (Hopkins-Folin), ammonia (Folin), sugar (Fehling and Benedict), and kreatinin (Folin).

    University of Virginia Record


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