Individual and Combined Coatings of Chitosan and Carnauba Wax with Oregano Essential Oil to Avoid Water Loss and Microbial Decay of Fresh Cucumber

Silva-Espinoza, Brenda A. ; Luis A Ortega-Ramirez ; et al.

In: Coatings, Jg. 10 (2020-06-01), Heft 614

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The objective of the present study is to evaluate the effect of individual and combined coatings of chitosan (0.008 g·

mL&minus

1) and carnauba wax (0.1 g·

1) with oregano essential oil (OEO, 0.08 g·

1) to reduce dehydration and microbial decay of fresh cucumbers stored at 10 °

C. Chitosan-OEO-wax films showed the lowest water vapor transmission rate (0.141 g·

m&minus

2·

h&minus

1), compared to single chitosan films (0.257 g·

1). While chitosan-OEO films completely inhibited the in vitro growth of Alternaria alternata and reduced the growth of Salmonella Typhimurium, Escherichia coli O157:H7, mesophilic bacteria, and fungi isolated from decayed cucumbers. Besides, the infrared analysis of chitosan-OEO-wax films showed shifts in O&ndash

H and N&ndash

H absorption bands, indicating possible hydrogen bonding between the components. Wax and wax-OEO were the most effective coatings to prevent weight loss in cucumbers during 15 days of storage at 10 °

C, while the most effective antimicrobial treatments were chitosan and chitosan-OEO. Therefore, these results showed that carnauba wax and carnauba wax-OEO coatings were the most effective in weight loss, whereas chitosan and chitosan-OEO were the most effective to reduce the microbial load of the treated fresh cucumber.

Titel:	Individual and Combined Coatings of Chitosan and Carnauba Wax with Oregano Essential Oil to Avoid Water Loss and Microbial Decay of Fresh Cucumber
Autor/in / Beteiligte Person:	Silva-Espinoza, Brenda A. ; Luis A Ortega-Ramirez ; González-Aguilar, Gustavo A. ; Miranda, Raquel ; Lizardi-Mendoza, Jaime ; Manuel Reynaldo Cruz-Valenzuela ; Maria Melissa Gutierrez-Pacheco ; Jesús Fernando Ayala-Zavala
Link:	View record at OpenAIRE (Volltext) https://www.mdpi.com/2079-6412/10/7/614
Zeitschrift:	Coatings, Jg. 10 (2020-06-01), Heft 614
Veröffentlichung:	MDPI AG, 2020
Medientyp:	unknown
ISSN:	2079-6412 (print)
Schlagwort:	0106 biological sciences Materials science Cucumis sativus L macromolecular substances 01 natural sciences Alternaria alternata law.invention Chitosan chemistry.chemical_compound law 010608 biotechnology Materials Chemistry medicine Food science Dehydration essential oils Essential oil 040502 food science Wax antimicrobial activity biology technology, industry, and agriculture dehydration 04 agricultural and veterinary sciences Surfaces and Interfaces bilayer coating biology.organism_classification medicine.disease Antimicrobial Surfaces, Coatings and Films carbohydrates (lipids) chemistry lcsh:TA1-2040 visual_art visual_art.visual_art_medium Carnauba wax 0405 other agricultural sciences lcsh:Engineering (General). Civil engineering (General) Mesophile
Sonstiges:	Nachgewiesen in: OpenAIRE Sprachen: English File Description: application/pdf Language: English Rights: OPEN

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