Measurements of Oxygen-18/Oxygen-16 Stable Isotope Ratio in Citrus Juice: A Comparison of Preparation Methods

Eli Cohen, Israel Saguy

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

The 180/160 ratios of the water of a number of citrus juices were measured by utilizing two preparation methods (i.e., distillation and charcoal treatment). The charcoal preparation method not only was proven to be a rapid method that circumvented the need for distillation but also was more accurate and reliable in accounting for the real isotopic ratio of 180/160 in citrus juices. Data obtained by utilizing the charcoal preparation method were ca.0.5%o higher than those obtained by distillation. This discrepancy was related to incomplete water distillation. The superior accuracy obtained with the charcoal method indicates that it should be possible to utilize the isotope ratio for the detection of citrus juice adulteration.

Original languageEnglish
Pages (from-to)28-30
Number of pages3
JournalJournal of Agricultural and Food Chemistry
Volume32
Issue number1
DOIs
StatePublished - 1 Jan 1984
Externally publishedYes

ASJC Scopus subject areas

  • General Chemistry
  • General Agricultural and Biological Sciences

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