The ability to detect the undeclared addition of a juice of lesser economic value to one of higher value (juice-to-juice debasing) is a particular concern between apple and pear juices due to similarities in their major carbohydrate/polyol profiles. Individual unique fingerprint phenolics have been identified in apple juice and pear juice, and an additional plant hormone compound (absisic acid) identified in pear juice. Additionally, the HPLC-PDA (high performance liquid chromatography with a photodiode array detector) profile of pear juices in combination with pear fingerprint compounds including arbutin could be used to identify samples originating from China versus those from other geographical locations.

Read the abstract at: Markers in Pear and Apple Juice

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