Abstract：
:The purposes of this study were to develop stable thyme essential oil chitosan nanoemulsions (TEO-CSs) and thymol chitosan nanoemulsions (T-CSs), and to evaluate their characterization and antibacterial properties. The effects of the TEO-CSs and T-CSs on preservation of refrigerated pork at 4 °C were also assessed. The results indicated that the mean particle size values of the TEO-CSs and T-CSs were 139.47 and 123.30 nm, and the encapsulation efficiencies were 80.99% and 70.72%. The absolute zeta potential values of the TEO-CSs and T-CSs were 30.87 and 32.42 mV respectively, indicating that the stable TEO-CSs and T-CSs were fabricated. The information on FTIR, XRD and TGA inferred that chitosan was physically mixed with thymol and TEO without chemical reaction, and the antibacterial properties of thymol and TEO still remained. Furthermore, the antibacterial assays verified that the TEO-CSs and T-CSs strongly inhibited Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli) planktonic bacteria and biofilms. Fresh pork treated with the TEO-CSs and T-CSs had significantly improved color parameters (a⁎, b⁎, L⁎ and ΔE values) during storage at 4 °C. The TEO-CSs and T-CSs effectively extended the shelf life of refrigerated pork to more than 6 days by measuring the pH values and total viable count (TVC) of bacteria. Our results highlighted that the TEO-CSs and T-CSs, as natural novel antibacterial packaging materials, had outstanding antibacterial activities and effectively preserved food.
journal_name
Int J Biol Macromoljournal_title
International journal of biological macromoleculesauthors
Liu T,Liu Ldoi
10.1016/j.ijbiomac.2020.07.207subject
Has Abstractpub_date
2020-11-01 00:00:00pages
1509-1515eissn
0141-8130issn
1879-0003pii
S0141-8130(20)33967-2journal_volume
162pub_type
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journal_title：International journal of biological macromolecules
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journal_title：International journal of biological macromolecules
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journal_title：International journal of biological macromolecules
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journal_title：International journal of biological macromolecules
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doi：10.1016/0141-8130(95)01083-1
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