Feasibility study on the use of near-infrared hyperspectral imaging for the screening of anthocyanins in intact grapes during ripening

J Agric Food Chem. 2013 Oct 16;61(41):9804-9. doi: 10.1021/jf4021637. Epub 2013 Oct 3.

Abstract

The potential of near-infrared hyperspectral imaging to determine anthocyanins in intact grape has been evaluated. The hyperspectral images of intact grapes during ripening were recorded using a near-infrared hyperspectral imaging covering the spectral range between 900 and 1700 nm. Reference values of anthocyanins were obtained by HPLC-DAD. A number of spectral pretreatments and different mask development strategies were studied. Calibrations were performed by modified partial least-squares regression (MPLS) and present a good potential (RSQ of 0.86 and SEP values of 2.62 and 3.05 mg g(-1) of grape skin for nonacylated and total anthocyanins, respectively) for a fast and reasonably inexpensive screening of these compounds in intact grapes.

Publication types

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

MeSH terms

  • Anthocyanins / analysis*
  • Feasibility Studies
  • Fruit / growth & development*
  • Plant Extracts / analysis*
  • Spectroscopy, Near-Infrared / methods*
  • Vitis / chemistry*
  • Vitis / growth & development

Substances

  • Anthocyanins
  • Plant Extracts