718762

ISO 5549:1978 [ Withdrawn ]

Caseins and caseinates -- Determination of protein content (Reference method)

standard by International Organization for Standardization , 06/01/1978

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Full Description

Does not apply to caseins and caseinates containing ammonium caseinate or other ammonium compounds, or other nitrogenous nonprotein compounds. The principle of determination consists in digesting a test portion with a mixture of potassium sulphate and sulphuric acid, in the presence of copper(II) sulphate as catalyst, to convert organic nitrogen into ammoniacal nitrogen, distilling and absorbing the ammonia in boric acid solution, titrating with standard volumetric hydrochloric acid solution and multiplying the resualt by the factor 6.38.

 

Product Details

Published:
06/01/1978
Number of Pages:
3
File Size:
1 file , 730 KB
Same As:
BS 6248-7:1982
Note:
This product is unavailable in Ukraine, Russia, Belarus
 

Document History

  1. ISO 8968-1:2014


    Milk and milk products - Determination of nitrogen content - Part 1: Kjeldahl principle and crude protein calculation

    • Most Recent

  2. ISO/TS 17837:2008


    Milk and milk products - Determination of nitrogen content and crude protein calculation - Kjeldahl method

    • Historical Version

  3. ISO 8968-1:2001


    Milk - Determination of nitrogen content - Part 1: Kjeldahl method

    • Historical Version

  4. ISO 8968-2:2001


    Milk - Determination of nitrogen content - Part 2: Block-digestion method (Macro method)

    • Historical Version

  5. ISO 5549:1978

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    Caseins and caseinates -- Determination of protein content (Reference method)

    • Historical Version