CDR DrinkLab is a quick, reliable and easy analysis system for the quality and process control of the beverage sector

Determination of Total Latic Acid (D+L) in Fruit Juices

The measurement of D+L lactic acid in fruit juices is used to control the quality and safety of the product. High values indicate unwanted microbial fermentation, possible spoilage or poor preservation. It also helps to verify compliance with regulations and prevent food fraud.

Method

Sample treatment

The sample must be centrifuged (code 222061) before the analysis.

Principle of the test

D-lactic acid and L-lactic acid are oxidized through an enzymatic reaction to pyruvic acid with the consequent production of NADH. The increase in absorbance, measured at 366 nm in end-point, is proportional to the concentration of lactic acid in the sample. The result is expressed in ppm.

Calibration curve

The calibration curve was made using samples with known lactic acid value (L+D). The trend of the curve confirms the excellent linearity of the system over the entire measurement range.

...

Reagent test Kits

Measuring range

AnalysesMeasuring rangeResolutionRepeatability

The perfect system for you

image

CDR DrinkLab

  • Complete analysis panel, supplied already configured

  • Up to 16 determinations simultaneously

  • Possibility of carrying out analyses of the same sample

  • Integrated printer

  • Full connections (LAN - USB - Bluetooth barcode/QR code reader)