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Classification of proanthocyanidin profiles using matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) spectra data combined with multivariate analysis.
- Source :
-
Food chemistry [Food Chem] 2021 Jan 30; Vol. 336, pp. 127667. Date of Electronic Publication: 2020 Jul 29. - Publication Year :
- 2021
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Abstract
- Proanthocyanidin (PAC) profiles of apples (a-PAC), cranberries (c-PAC), and peanut skins (p-PAC) were determined by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS). Deconvolution of overlapping isotopic patterns indicated that in apples, only 5% of the PAC oligomers contain one or more A-type bonds, whereas in cranberries and peanut skins, 96% of the PAC oligomers contain one or more A-type bonds. MALDI-TOF MS data combined with multivariate analysis, such as principal component analysis (PCA) and linear discriminant analysis (LDA), were used to differentiate and discriminate a-PAC, c-PAC, and p-PAC from one another. Mixtures of c-PAC with either a-PAC or p-PAC at different w/w ratios were evaluated by LDA modeling. The LDA model classified the training, testing, and validation sets with 99.4%, 100%, and 94.2% accuracy. Results suggest that MALDI-TOF MS and multivariate analysis are useful in determining authenticity of PAC from different sources and mixtures of PAC sources.<br />Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.<br /> (Copyright © 2020 Elsevier Ltd. All rights reserved.)
- Subjects :
- Arachis chemistry
Discriminant Analysis
Food Analysis statistics & numerical data
Malus chemistry
Multivariate Analysis
Principal Component Analysis
Proanthocyanidins chemistry
Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization statistics & numerical data
Vaccinium macrocarpon chemistry
Food Analysis methods
Proanthocyanidins analysis
Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization methods
Subjects
Details
- Language :
- English
- ISSN :
- 1873-7072
- Volume :
- 336
- Database :
- MEDLINE
- Journal :
- Food chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 32758802
- Full Text :
- https://doi.org/10.1016/j.foodchem.2020.127667