Detection of exogenous sugars in pineapple juice using compound-specific stable hydrogen isotope analysis.

ABSTRACT: An improved procedure for determining ²H/¹H isotope ratios, using gas chromatography-isotope ratio mass spectrometry, has been used to detect the addition of exogenous C4-plant-derived sugars to pineapple juice. Isotopic techniques are commonly used to identify the addition of low-cost sugars to fruit juices and are difficult to subvert as it is not economically viable to change the isotopic ratios of the sugars. However, the addition of cane sugar to pineapple juice has presented a significant challenge that is only detected by site-specific ¹³C analysis of the methyl and methylene positions of ethanol derived from pineapple sugars, measured by nuclear magnetic resonance. This new GC-IRMS-based procedure utilises the trifluoroacetate derivative of sucrose

SUBMITTER: Kelly SD 

PROVIDER: S-EPMC8046972 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature