Please use this identifier to cite or link to this item: https://hdl.handle.net/11499/37139
Title: Effects of ozone and chlorine washes and subsequent cold storage on microbiological quality and shelf life of fresh parsley leaves
Authors: Karaca, Hakan
Velioglu, Y.S.
Keywords: Bacterial inactivation
Chlorine
Ozone
Shelf life
Washing treatment
Antioxidants
Ascorbic acid
Chlorophyll
Cold storage
Escherichia coli
Food storage
Anti-oxidant activities
Antioxidant compounds
Distilled water
Listeria innocua
Microbial reduction
Microbiological quality
Total phenolic content
Food safety
Publisher: Academic Press
Abstract: In this study, we evaluated the effects of ozone and chlorine washes on the inactivation of Escherichia coli and Listeria innocua and on color pigments and antioxidant compounds of fresh parsley leaves. The growth of the microorganisms and the changes in pigments and antioxidant compounds of the leaves during subsequent cold storage for 15 days were also investigated. The microbial reductions obtained with ozone treatments were approximately 1 log higher than those obtained with distilled water. Chlorine was more effective against E. coli than ozone (3.2 and 2.2 log reductions, respectively) however reductions in L. innocua counts obtained with chlorine and ozone were not significantly different (P > 0.05). Washing treatments tested in this study did not have any detrimental effect on the pigments and antioxidant compounds of parsley leaves. However, these characteristics showed descending trends during subsequent cold storage. Decreases reached up to 45, 39, 88, 33 and 35% in chlorophyll a, chlorophyll b, ascorbic acid and total phenolic contents and antioxidant activity, respectively, at the end of storage. We determined that E. coli counts steadily decreased, however, L. innocua counts were quite stable during storage which can pose a serious food safety risk associated with parsley. © 2020 Elsevier Ltd
URI: https://hdl.handle.net/11499/37139
https://doi.org/10.1016/j.lwt.2020.109421
ISSN: 0023-6438
Appears in Collections:Mühendislik Fakültesi Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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