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SSH ISO 5549:2002

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

Jan 1, 2002

General information

60.60     Jan 1, 2002

DPS

DPS/KT 302

International Standard

67.100.99  

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Scope

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.

Life cycle

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PUBLISHED
SSH ISO 5549:2002
60.60 Standard published
Jan 1, 2002

Related project

Adopted from ISO 5549:1978