Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.11851/3681
Title: Aspergillus decontamination in hazelnuts: Evaluation of atmospheric and low-pressure plasma technology
Authors: Şen, Yasin
Ulusoy, Baran Önal
Mutlu, Mehmet
Keywords: Atmospheric-pressure cold plasma
Low-pressure cold plasma
Aspergillus flavus
Aspergillus parasiticus
Inactivation
Decontamination
Hazelnut
Issue Date: Jun-2019
Publisher: Elsevier Ltd.
Source: Sen, Y., Onal-Ulusoy, B., & Mutlu, M. (2019). Aspergillus decontamination in hazelnuts: Evaluation of atmospheric and low-pressure plasma technology. Innovative Food Science & Emerging Technologies, 54, 235-242.
Abstract: The decontamination effects of non-thermal atmospheric-pressure (AP)and low-pressure (LP)plasma systems were investigated on hazelnuts artificially contaminated with Aspergillus parasiticus and Aspergillus flavus spores. Furthermore, AP-plasma treatment conditions were also optimized. Spore reductions of 5.6 and 4.7 log cfu/g in Aspergillus parasiticus and Aspergillus flavus, respectively, were achieved after 100 W-30 min of LP-air-plasma treatment. Similarly, 5.5 and 5.4 log cfu/g of reductions in Aspergillus parasiticus and Aspergillus flavus, respectively, were achieved after AP-air-plasma treatment at 3000 L/h of gas flow rate, frequency of 25 kHz and reference voltage of 100% (655 W)for 5-cycles (1.7 min). Deformation of spores and loss of spore integrity after plasma treatments were demonstrated with scanning electron microscope (SEM). This study showed that LP and AP plasma treatments might be an alternative method for inactivation of aflatoxin- producing fungi. Industrial relevance: Non-thermal (cold)plasma is a promising technology for decontamination of foods due to its safety, ease of use and low temperature processing capability. The results of this study showed that plasma system can be incorporated into a food processing chain, and when initial Aspergillus spp. spores were 7.8–7.9 cfu/g in hazelnut, plasma treatment with reductions of up to 5.6 log cfu/g can compete with other decontamination methods.
URI: https://hdl.handle.net/20.500.11851/3681
https://doi.org/10.1016/j.ifset.2019.04.014
ISSN: 1466-8564
Appears in Collections:Biyomedikal Mühendisliği Bölümü / Department of Biomedical Engineering
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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