Speciation and milk adulteration analysis by rapid ambient liquid MALDI mass spectrometry profiling using machine learning

Abstract Growing interest in food quality and traceability by regulators as well as consumers demands advances in more rapid, versatile and cost-effective analytical methods. Milk, as most food matrices, is a heterogeneous mixture composed of metabolites, lipids and proteins. One of the major challe...

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Autores principales: Cristian Piras, Oliver J. Hale, Christopher K. Reynolds, A. K. Jones, Nick Taylor, Michael Morris, Rainer Cramer
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Publicado: Nature Portfolio 2021
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spelling oai:doaj.org-article:e10aab61123d4cd2a4be27a0b138fb742021-12-02T14:27:02ZSpeciation and milk adulteration analysis by rapid ambient liquid MALDI mass spectrometry profiling using machine learning10.1038/s41598-021-82846-52045-2322https://doaj.org/article/e10aab61123d4cd2a4be27a0b138fb742021-02-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-82846-5https://doaj.org/toc/2045-2322Abstract Growing interest in food quality and traceability by regulators as well as consumers demands advances in more rapid, versatile and cost-effective analytical methods. Milk, as most food matrices, is a heterogeneous mixture composed of metabolites, lipids and proteins. One of the major challenges is to have simultaneous, quantitative detection (profiling) of this panel of biomolecules to gather valuable information for assessing food quality, traceability and safety. Here, for milk analysis, atmospheric pressure matrix-assisted laser desorption/ionization employing homogenous liquid sample droplets was used on a Q-TOF mass analyzer. This method has the capability to produce multiply charged proteinaceous ions as well as highly informative profiles of singly charged lipids/metabolites. In two examples, this method is coupled with user-friendly machine-learning software. First, rapid speciation of milk (cow, goat, sheep and camel) is demonstrated with 100% classification accuracy. Second, the detection of cow milk as adulterant in goat milk is shown at concentrations as low as 5% with 92.5% sensitivity and 94.5% specificity.Cristian PirasOliver J. HaleChristopher K. ReynoldsA. K. JonesNick TaylorMichael MorrisRainer CramerNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Cristian Piras
Oliver J. Hale
Christopher K. Reynolds
A. K. Jones
Nick Taylor
Michael Morris
Rainer Cramer
Speciation and milk adulteration analysis by rapid ambient liquid MALDI mass spectrometry profiling using machine learning
description Abstract Growing interest in food quality and traceability by regulators as well as consumers demands advances in more rapid, versatile and cost-effective analytical methods. Milk, as most food matrices, is a heterogeneous mixture composed of metabolites, lipids and proteins. One of the major challenges is to have simultaneous, quantitative detection (profiling) of this panel of biomolecules to gather valuable information for assessing food quality, traceability and safety. Here, for milk analysis, atmospheric pressure matrix-assisted laser desorption/ionization employing homogenous liquid sample droplets was used on a Q-TOF mass analyzer. This method has the capability to produce multiply charged proteinaceous ions as well as highly informative profiles of singly charged lipids/metabolites. In two examples, this method is coupled with user-friendly machine-learning software. First, rapid speciation of milk (cow, goat, sheep and camel) is demonstrated with 100% classification accuracy. Second, the detection of cow milk as adulterant in goat milk is shown at concentrations as low as 5% with 92.5% sensitivity and 94.5% specificity.
format article
author Cristian Piras
Oliver J. Hale
Christopher K. Reynolds
A. K. Jones
Nick Taylor
Michael Morris
Rainer Cramer
author_facet Cristian Piras
Oliver J. Hale
Christopher K. Reynolds
A. K. Jones
Nick Taylor
Michael Morris
Rainer Cramer
author_sort Cristian Piras
title Speciation and milk adulteration analysis by rapid ambient liquid MALDI mass spectrometry profiling using machine learning
title_short Speciation and milk adulteration analysis by rapid ambient liquid MALDI mass spectrometry profiling using machine learning
title_full Speciation and milk adulteration analysis by rapid ambient liquid MALDI mass spectrometry profiling using machine learning
title_fullStr Speciation and milk adulteration analysis by rapid ambient liquid MALDI mass spectrometry profiling using machine learning
title_full_unstemmed Speciation and milk adulteration analysis by rapid ambient liquid MALDI mass spectrometry profiling using machine learning
title_sort speciation and milk adulteration analysis by rapid ambient liquid maldi mass spectrometry profiling using machine learning
publisher Nature Portfolio
publishDate 2021
url https://doaj.org/article/e10aab61123d4cd2a4be27a0b138fb74
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