Dr. Nicole Ollinger von der Fachhochschule Oberösterreich und ihr Team haben in einem FFoQSI-Projekt Dekorzucker untersucht, der – statt wie üblich mit Palmöl – mit Sonnenblumenöl mit hohem Ölsäuregehalt hergestellt wurde. Zur Analyse und zum Vergleich von Qualität und Haltbarkeit der Produkte wurden die elektronische Nase HERACLES von Alpha MOS sowie das VideometerLab zur multispektralen Bildanalyse eingesetzt.
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Abstract: High-Oleic Sunflower Oil as a Potential Substitute for Palm Oil in Sugar Coatings—A Comparative Quality Determination Using Multispectral Imaging and an Electronic Nose
Palm oil has a bad reputation due to the exploitation of farmers and the destruction of endangered animal habitats. Therefore, many consumers wish to avoid the use of palm oil. Decorative sugar contains a small amount of palm oil to prevent the sugar from melting on hot bakery products. High-oleic sunflower oil used as a substitute for palm oil was analyzed in this study via multispectral imaging and an electronic nose, two methods suitable for potential large-batch analysis of sugar/oil coatings. Multispectral imaging is a nondestructive method for comparing the wavelength reflections of the surface of a sample. Reference samples enabled the estimation of the quality of unknown samples, which were confirmed via acid value measurements. Additionally, for quality determination, volatile compounds from decorative sugars were measured with an electronic nose. Both applications provide comparable data that provide information about the quality of decorative sugars.
Keywords: multispectral imaging; electronic nose; acid value; food quality; palm oil; sunflower oil
Authors: Ollinger, N.; Blank-Landeshammer, B.; Schütz-Kapl, L.; Rochard, A.; Pfeifenberger, I.; Carstensen, J.M.; Müller, M.; Weghuber, J. High-Oleic Sunflower Oil as a Potential Substitute for Palm Oil in Sugar Coatings—A Comparative Quality Determination Using Multispectral Imaging and an Electronic Nose. Foods 2024, 13, 1693. https://doi.org/10.3390/foods13111693
Funding: The COMET-K1 competence center FFoQSI is funded by the Austrian federal ministries BMK and BMDW and the Austrian provinces Lower Austria, Upper Austria and Vienna within the scope of COMET–Competence Centers for Excellent Technologies. The COMET program is managed by the Austrian Research Promotion Agency (FFG).
Copyright: © 2024 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).