Milk Chemistry

The ACTALIA reference laboratory of Poligny (France), specialised in food analysis, has performed an evaluation study of the CDR FoodLab® system on important parameters of quality control in the dairy sector such as: ammonia on serum, urea on milk and lactose on lactose-free milk. The CDR FoodLab® methods were compared to the reference methods, obtaining excellent correlation coefficients.

In this work a new improvement for lactose determination is assessed in terms of reproducibility, accuracy and recovery. New method and traditional enzymatic method are also taken into comparisonon adding determined aliquotes of lactose in reallactose-free matrices. The new method, that is in CDR FoodLab®, appears to be much quicker and with a friendly use for everyone if it is compared to the tradional enzymatic kit.

The presence of lactic acid or lactate in milk is due to the fermentation of lactose caused mainly by lactic bacteria. Generally speaking, just-milked milk does not contain lactic acid, but this increases after a while and its concentration is closely correlated to the total bacterial charge.

Find out why the chemical analysis of milk urea nitrogen is very important to companies that deal with the transformation and packaging of milk and dairy products, to institutes assigned to the control and to dairy industry research laboratories.

From July through October 2001, Standard Latte Laboratory, which is part of the Associazione Italiana Allevatori (Italian Breeders Association) ran 2,500 tests in order to check FoodLab method in determining the amount of urea in the milk of cows, buffalos and sheeps. This test validates the analysis method of all the analysis systems of the FoodLab Line, the FoodLab method, comprising the new versions of the systems: CDR BeerLab^® and Junior, WineLab Touch, FoodLab Touch and FoodLab Touch for fats and oils.

In collaboration with Parmalat S.p.A., CDR conducted a comparative study between the specific electrode and FoodLab methods in determining the amount of ammonia in whole and skimmed milk.

The researchers of CDR’s laboratories have developed a new method to quickly assess milk thermal processes in an easy, rapid and reliable way. See the results of the study, presented at the 2002 Congrilait – Paris.

The central research and development laboratory of PARMALAT S.p.A carried out a study entitled “Assessment of a fast method for milk thermal processes: e-fructosyl-lysine” aimed at determining whether the innovative FoodLab method for the control of dairy products could be used as a preliminary screening test to distinguish different types of thermal processes (pasteurization, direct and indirect UHT).

FoodLab was used during the study entitled “Comparison between analytical methods for the determination of the amount of ammonia, Peroxide Value (PV), chlorides and lactic acid aimed at calculating the shelf-life of ricotta cheese” conducted by Toppino P.M., Campagnol L., Cori E., Riva M. from Istituto Sperimentale Lattiero-Caseario (Dairy Products Experimental Institute), Lodi DISTAM, Milano