In the United States alone, orange juice sales gross more than a billion dollars alone. This has led to fruit juice adulteration, which in some cases is the simple dilution and blending of inexpensive and synthetically produced juices into more expensive ones. The sweeteners added can range from other less-expensive juices to sugar derived from fruit or vegetables. The challenge is that methods for detecting adulteration from cane sugar cannot be applied to detection of beet medium invert sugar because the metabolic path by which beets produce sugar is different from that of sugar cane.
The Chromatography applications lab at Thermo Fisher Scientific has developed a high-performance anion exchange chromatography with pulsed amperometric detection (HPAE-PAD) method for profiling beet medium invert sugar. Application 82 describes the sensitive identification of several components in beet medium invert sugar that are not present in orange juice.
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In case you are not familiar with the HPAE-PAD technique, read Technical Note 20 for an overview.
Tell us about the types of fruit juice adulterations you testing for.