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Correlation between Lactulose and Furosine in UHT-Heated Milk

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Abstract:

The kinetics of furosine and lactulose formation during heat treatment of milk and correlations between these parameters have been studied as a contribution for setting legal standards for heat-processed milks. Activation energies of 93.15 ± 5.87 kJ/mol and 153.2 ± 6.49 kJ/mol for furosine and lactulose respectively were computed from zero-order rate constants. Polynomial and logarithmic equations were developed to predict the furosine content as a function of lactulose content. The polynomial equation proposed fit the experimental data and previously reported data. The standard error of the prediction was lower than ±7.8 mg/liter. The application of this equation to observed values for lactulose and furosine in commercial milk samples would allow the detection of milk powder in UHT milk.

Keywords: FUROSINE; LACTULOSE; MILK; UHT

Document Type: Research Article

Affiliations: Instituto de Fermentaciones Industriales, (C.S.I.C.), Juan de la Cierva 3, 28006 Madrid, Spain

Publication date: October 1, 1996

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