Identification of Passion Fruit Oil Adulteration by Chemometric Analysis of FTIR Spectra

Please always quote using this URN: urn:nbn:de:bvb:29-opus4-128590
  • Passion fruit oil is a high-value product with applications in the food and cosmetic sectors. It is frequently diluted with sunflower oil. Sunflower oil is also a potential adulterant as its addition does not notably alter the appearance of the passion fruit oil. In this paper, we show that this is also true for the FTIR spectrum. However, the chemometric analysis of the data changes this situation. Principal component analysis (PCA) enables not only the straightforward discrimination of pure passion fruit oil and adulterated samples but also the unambiguous classification of passion fruit oil products from five different manufacturers. Even small amounts—significantly below 1%—of thePassion fruit oil is a high-value product with applications in the food and cosmetic sectors. It is frequently diluted with sunflower oil. Sunflower oil is also a potential adulterant as its addition does not notably alter the appearance of the passion fruit oil. In this paper, we show that this is also true for the FTIR spectrum. However, the chemometric analysis of the data changes this situation. Principal component analysis (PCA) enables not only the straightforward discrimination of pure passion fruit oil and adulterated samples but also the unambiguous classification of passion fruit oil products from five different manufacturers. Even small amounts—significantly below 1%—of the adulterant can be detected. Furthermore, partial least-squares regression (PLSR) facilitates the quantification of the amount of sunflower oil added to the passion fruit oil. The results demonstrate that the combination of FTIR spectroscopy and chemometric data analysis is a very powerful tool to analyze passion fruit oil.show moreshow less

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Metadaten
Author:Johannes Kiefer, Anja I. Lampe, Stefano F. Nicoli, Massimo Lucarini, Alessandra Durazzo
URN:urn:nbn:de:bvb:29-opus4-128590
DOI:https://doi.org/10.3390/molecules24183219
ISSN:1420-3049
Title of the journal / compilation (English):Molecules
Publisher:MDPI
Document Type:Article
Language:English
Year of Completion:2019
Date of first Publication:2019/09/04
Publishing Institution:Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU)
Release Date:2020/01/15
Tag:chemometrics; infrared spectroscopy; maracuja oil; passion fruit oil; principal component analysis
Volume:24
Issue:18
Original publication:Molecules 24.18 (2019). <https://www.mdpi.com/1420-3049/24/18/3219>
Institutes:Naturwissenschaftliche Fakultät
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
open_access (DINI-Set):open_access
Collections:Universität Erlangen-Nürnberg / Eingespielte Open Access Artikel / Eingespielte Open Access Artikel 2020
Licence (German):Creative Commons - CC BY - Namensnennung 4.0 International