Journal
LWT-FOOD SCIENCE AND TECHNOLOGY
Volume 111, Issue -, Pages 218-225Publisher
ELSEVIER
DOI: 10.1016/j.lwt.2019.05.040
Keywords
Carboxymethyl xylan; Licorice essential oil; Functional films; Antioxidant activity; Antimicrobial properties
Categories
Funding
- FEDER funds through the POCI-COMPETE 2020 Operational Program Competitiveness and Internationalization in Axis I-Strengthening research, technological development, and innovation [POCI-01-0145-FEDER-007491]
- FCT-Foundation for Science and Technology [UID/Multi/00709/2013]
- [UID/Multi/00195/2013]
- Fundação para a Ciência e a Tecnologia [UID/Multi/00195/2013, UID/Multi/00709/2013] Funding Source: FCT
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Antioxidant and antibacterial edible films based on carboxymethyl xylan with licorice essential oil incorporated were successfully developed. The films were prepared by the casting method and characterized using FUR. The grammage, thickness, contact angle, mechanical and optical properties of the films were measured, together with the evaluation of their antioxidant, antibacterial and anti-biofilm properties against common foodborne pathogens. The FTIR spectra of the films clearly show the successful incorporation of the essential oil. The antioxidant properties of the films linked to scavenging free radicals and lipid peroxidation inhibition were maintained even after a storage period at room temperature (20 days, 25 degrees C). Moreover, the capacity of these films to inhibit the growth of Enterococcus faecalis and Listeria monocytogenes was demonstrated. The results also suggest the anti-biofilm potential of films incorporated with licorice essential oil. Therefore, these biodegradable films can be used in active packages for food, improving the overall shelf life.
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