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Updated: Apr 25, 2026

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Published on: August 19, 2013
Detection of orange juice frauds using front-face fluorescence spectroscopy and Independent Components Analysis
Faten Ammari1, Lamia Redjdal1, Douglas N Rutledge1
1INRA, UMR1145 Ingénierie Procédés Aliments, F-75005 Paris, France; AgroParisTech, UMR1145 Ingénierie Procédés Aliments, F-75005 Paris, France; CNAM, UMR1145 Ingénierie Procédés Aliments, F-75005 Paris, France.
Abstract:
The aim of this study was to find simple objective analytical methods to assess the adulteration of orange juice by grapefruit juice. The adulterations by addition of grapefruit juice were studied by 3D-front-face fluorescence spectroscopy followed by Independent Components Analysis (ICA) and by classical methods such as free radical scavenging activity and total flavonoid content. The results of this study clearly indicate that frauds by adding grapefruit juice to orange juice can be detected at percentages as low as 1%.
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