T. Becker et al., D-LACTATE AND L-LACTATE DETERMINATION IN DAIRY-PRODUCTS - PRESENTATION OF A FAST AUTOMATED-ANALYSIS SYSTEM, Zeitschrift fur Lebensmittel-Untersuchung und -Forschung, 201(6), 1995, pp. 537-540
A flow-injection system is presented, which is versatile, automated an
d has an integrated enzyme system. Its efficiency at determining D- an
d L-lactate separately in dairy products is compared with the official
ly used reference method (DIN 10335). By means of a mathematical elimi
nation of matrix effects, the pretreatment steps can be clearly reduce
d. As a result of the immobilization of the enzymes, an appropriate au
tomation software and an adaptation of the system developed to the giv
en medium, the analysis could be performed within 5 min and was distin
ctly cheaper than alternative methods. The values determined in 15 dif
ferent dairy products deviated from those of the reference method by 3
% at a maximum.