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Methods of estimating protein in milk


, : Methods of estimating protein in milk. Zivotnovodstvo. 5, 91-94

Protein in 2-day samples of milk preserved in 40% formalin was estimated by the Kjeldahl method, the method of Kofrani, formol titration, the colorimetric method with orange G, a fluorescent method with a proteinometer, and by a refractometric method. Absolute difference in comparison with the Kjeldahl method was -0.05, +0.11, +0.03, +0.06 and +0.06, respectively. Correlation coefficient was +0.70, +0.83, +0.81, +0.46 and +0.67.

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