Discrimination and classification of beet and cane inverts in honey by FT-Raman spectroscopy

M. M. Paradkar, J. Irudayaraj

Research output: Contribution to journalArticlepeer-review

Abstract

As a natural product, honey has been prone to adulteration. Adulteration of honey by substituting with cheap invert sugars is a critical issue in the honey industry. Fourier Transform (FT) Raman Spectroscopy was used to detect adulterants such as cane and beet invert in honey. FT Raman spectrum of adulterated samples were characterized and the region between 200 and 1600 cm-1 (representing carbohydrates and amino acid fractions) was used for quantitative and discriminant analysis. Partial least squares, and principal component regression analysis were used for quantitative analysis while linear discriminant analysis and canonical variate analysis (CVA) were used for discriminant analysis. FT-Raman spectroscopy was efficient in predicting beet and cane invert adulterants (R2>0.91) in all three floral types of honey considered. Classification of adulterants in honey using CVA gave a minimum classification accuracy of about 96%.

Original languageEnglish (US)
Pages (from-to)231-239
Number of pages9
JournalFood chemistry
Volume76
Issue number2
DOIs
StatePublished - Feb 2 2002
Externally publishedYes

Keywords

  • Adulteration
  • Chemometrics
  • FT-Raman Spectroscopy
  • Honey
  • Sugars

ASJC Scopus subject areas

  • Analytical Chemistry
  • Food Science

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