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Using low frequency full bottle diamagnetic screening to study collectible wine.

S J Harley1, V Lim, P A Stucky

  • 1Department of Chemistry, One Shields Avenue, University of California, Davis, CA 95616, USA.

Talanta
|October 4, 2011
PubMed
Summary

A new low-frequency spectrometer screens wine

Area of Science:

  • Analytical Chemistry
  • Spectroscopy
  • Wine Science

Background:

  • Wine authentication is crucial for commerce and connoisseurship.
  • Current methods for wine analysis can be invasive or destructive.
  • Non-destructive screening methods are needed for intact wine bottles.

Purpose of the Study:

  • To develop and validate a non-invasive spectroscopic method for assessing wine diamagnetic properties.
  • To evaluate the method's sensitivity to wine solutes.
  • To demonstrate the application of the technique for wine authentication and counterfeit detection.

Main Methods:

  • Utilized a low-frequency (ν < 30 MHz) spectrometer for non-invasive analysis.
  • Employed principal component analysis (PCA) for data comparison and contrast.

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  • Analyzed standard solutions to determine sensitivity to ionic and molecular solutes.
  • Applied the method to a library of collectible wines.

    • Main Results:

    • Successfully screened diamagnetic properties of full, intact wine bottles.
    • Established the method's sensitivity to various ionic and molecular wine components.
    • Demonstrated effective comparison and contrast of sealed wine bottles.
    • Identified potential for counterfeit wine detection without opening bottles.

    Conclusions:

    • Low-frequency spectroscopy offers a viable non-destructive method for wine analysis.
    • The technique can differentiate wines based on their diamagnetic properties.
    • This approach holds promise for authenticating collectible wines and combating fraud.