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Phytochemical research using accelerator mass spectrometry.

T Le Vuong1, Bruce A Buchholz, Michael W Lamé

  • 1Vitalea Science, Inc, Davis, California, USA.

Nutrition Reviews
|October 29, 2004
PubMed
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Researchers can now study phytochemicals from fruits and vegetables in the human body at dietary levels. Accelerator mass spectrometry enables sensitive tracking of these compounds, aiding chronic disease research.

Area of Science:

  • Nutritional Science
  • Biochemistry
  • Analytical Chemistry

Background:

  • Fruits and vegetables contain vital phytochemicals that may reduce chronic disease risk.
  • Studying phytochemicals at physiological levels in humans is challenging due to limited detection sensitivity.
  • Existing methods lack the precision for safe, dietary-level human studies.

Purpose of the Study:

  • To introduce a sensitive method for tracing phytochemicals in humans.
  • To enable detailed kinetic studies of phytochemicals at dietary intake levels.

Main Methods:

  • Utilizing accelerator mass spectrometry (AMS).
  • Employing carbon-14 (14C)-labeled phytochemicals.
  • Achieving attomole sensitivity and <3% measurement precision.

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Main Results:

  • Demonstrated high sensitivity (attomole range) and precision (<3%) for 14C-labeled phytochemicals.
  • Enabled quantitative analysis of phytochemicals at physiologically relevant, dietary levels in humans.

Conclusions:

  • Accelerator mass spectrometry is a viable tool for human phytochemical research.
  • This technique advances the study of diet-related chronic disease prevention.