Portraying and tracing the impact of different production systems on the volatile organic compound composition of milk by PTR-(Quad)MS and PTR-(ToF)MS

N. Liu, A. Koot, K. Hettinga, J. de Jong, S.M. van Ruth

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

The aim of this study was to discover the unique volatile compositional traits of retail milk from different production systems. Forty-four retail milk samples were analyzed, including organic milk (n = 10), conventional milk (n = 14) and pasture milk (n = 20) from winter (n = 22) and summer (n = 22). Proton transfer reaction quadrupole mass spectrometry (PTR-(Quad)MS) was utilized to obtain the mass-resolved fingerprints (76 masses per sample) of volatile organic compounds (VOCs). Principal component analysis (PCA) and analysis of variance (ANOVA) were performed to evaluate the differences between the groups. The production systems were characterized by six masses, while season showed larger differences, with twenty-two masses discriminating between the milks. For 2 masses, a significant interaction of systems and seasons was observed. The chemical formula of these VOC masses were tentatively identified by Proton Transfer Reaction Time-of-Flight Mass Spectrometric (PTR-(ToF)MS). These results illustrate that the type of feed is reflected in the VOC composition of milks. © 2017
Original languageEnglish
Pages (from-to)201-207
JournalFood Chemistry
Volume239
Early online date20 Jun 2017
DOIs
Publication statusPublished - 15 Jan 2018

Bibliographical note

cited By 6

Keywords

  • Mass spectrometry
  • Organic compounds
  • Principal component analysis
  • Proton transfer
  • Spectrometry
  • Volatile organic compounds, Chemical formulae
  • Organic milk
  • Production system
  • Proton transfer reactions
  • PTR-(Quad)MS
  • PTR-(ToF)MS
  • Quadrupole mass spectrometry
  • Time of flight, Analysis of variance (ANOVA), terpene
  • volatile organic compound
  • proton
  • volatile organic compound, analysis of variance
  • Article
  • chemical analysis
  • chemical composition
  • chemical interaction
  • chemical structure
  • clinical evaluation
  • finger dermatoglyphics
  • milk
  • pasture
  • principal component analysis
  • proton transfer reaction quadrupole mass spectrometry
  • proton transfer reaction time of flight mass spectrometry
  • proton transport
  • quadrupole mass spectrometry
  • seasonal variation
  • summer
  • time of flight mass spectrometry
  • winter
  • animal
  • mass spectrometry
  • spectroscopy, Animals
  • Mass Spectrometry
  • Milk
  • Protons
  • Spectrum Analysis
  • Volatile Organic Compounds

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