Investigation of different apple cultivars by high resolution magic angle spinning NMR. A feasibility study

J Agric Food Chem. 2011 Dec 28;59(24):12784-93. doi: 10.1021/jf203733u. Epub 2011 Nov 30.

Abstract

(1)H HR-MAS NMR spectroscopy was applied to apple tissue samples deriving from 3 different cultivars. The NMR data were statistically evaluated by analysis of variance (ANOVA), principal component analysis (PCA), and partial least-squares-discriminant analysis (PLS-DA). The intra-apple variability of the compounds was found to be significantly lower than the inter-apple variability within one cultivar. A clear separation of the three different apple cultivars could be obtained by multivariate analysis. Direct comparison of the NMR spectra obtained from apple tissue (with HR-MAS) and juice (with liquid-state HR NMR) showed distinct differences in some metabolites, which are probably due to changes induced by juice preparation. This preliminary study demonstrates the feasibility of (1)H HR-MAS NMR in combination with multivariate analysis as a tool for future chemometric studies applied to intact fruit tissues, e.g. for investigating compositional changes due to physiological disorders, specific growth or storage conditions.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Beverages / analysis
  • Feasibility Studies
  • Fruit / chemistry
  • Magnetic Resonance Spectroscopy / methods*
  • Malus / chemistry*
  • Malus / classification*
  • Multivariate Analysis