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The Clarifying Reagent, or how to make the analysis of milk and dairy products easier

Published online by Cambridge University Press:  12 July 2006

Gérard Humbert
Affiliation:
Laboratoire des BioSciences de l'Aliment, UC INRA 885. Faculté des Sciences et Techniques. BP 239. 54506 Vandoeuvre les Nancy cedex, France
Marie-France Guingamp
Affiliation:
Laboratoire des BioSciences de l'Aliment, UC INRA 885. Faculté des Sciences et Techniques. BP 239. 54506 Vandoeuvre les Nancy cedex, France
Guy Linden
Affiliation:
Laboratoire des BioSciences de l'Aliment, UC INRA 885. Faculté des Sciences et Techniques. BP 239. 54506 Vandoeuvre les Nancy cedex, France
Jean-Luc Gaillard
Affiliation:
Laboratoire des BioSciences de l'Aliment, UC INRA 885. Faculté des Sciences et Techniques. BP 239. 54506 Vandoeuvre les Nancy cedex, France
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Abstract

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Difficulties with the analysis of opaque milk and dairy products can be resolved by rendering the sample transparent. This allows direct photometric measurements of the reaction mixtures, and all sample pre-treatment steps become unnecessary. For this, several reagents have been reported in literature. Among them, the ‘Clarifying Reagent’ is mainly described here: its composition is given because it is now released from patenting restrictions. Its main property is a low absorbance between 340 and 800 nm. So it can be used in many chemical and enzymatic colorimetric measurements for estimating the quality of milk and dairy products.

Type
Research Article
Copyright
Proprietors of Journal of Dairy Research 2006