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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Physico-chemical, antimicrobial and antioxidant properties of gelatin-chitosan based films loaded with nanoemulsions encapsulating active compounds

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Author(s):
Perez-Cordoba, Luis J. [1, 2] ; Norton, Ian T. [2] ; Batchelor, Hannah K. [3] ; Gkatzionis, Konstantinos [2] ; Spyropoulos, Fotios [2] ; Sobral, Paulo J. A. [1]
Total Authors: 6
Affiliation:
[1] Univ Sao Paulo, Fac Anim Sci & Food Engn, Dept Food Engn, BR-13635900 Sao Paulo - Brazil
[2] Univ Birmingham, Sch Chem Engn, Birmingham B15 2TT, W Midlands - England
[3] Univ Birmingham, Sch Pharm, Birmingham B15 2TT, W Midlands - England
Total Affiliations: 3
Document type: Journal article
Source: FOOD HYDROCOLLOIDS; v. 79, p. 544-559, JUN 2018.
Web of Science Citations: 22
Abstract

The aim of this research was to develop and characterize gelatin-chitosan (4: 1) based films that incorporate nanoemulsions loaded with a range of active compounds; N-1: canola oil; N-2: alpha-tocopherol/cinnamaldehyde; N-3: alpha-tocopherol/garlic oil; or N-4: alpha-tocopherol/cinnamaldehyde and garlic oil. Nanoemulsions were prepared in a microfluidizer with pressures ranging from 69 to 100 MPa, and 3 processing cycles. Films were produced by the casting method incorporating 5 g N-1,N-2,N-3,N-4/100 g bio-polymers and using glycerol as a plasticizer, and subsequently characterized in terms of their physicochemical, antimicrobial and antioxidant properties. No differences (p > 0.05) were observed for all films in terms of moisture content (18% w/w), and thermal properties. The films' solubility in water and light transmission at 280 nm were considerably reduced as compared to the control, N-1 (15% and 60% respectively) because of the nanoemulsion incorporation. The film loaded with N-1 showed the greatest (p < 0.05) opacity, elongation at break and stiffness reduction, and was the roughest, whilst the lowest tensile strength and ability to swell were attained by films loaded with N-3 and N-4, respectively. DSC and X-ray analyses suggested compatibility among the biopolymeric-blend, and a good distribution of nanodroplets embedded into the matrix was confirmed by AFM and SEM analyses. Films loaded with nanoencapsulated active compounds (NAC) were very effective against Pseudomonas aeruginosa, and also showed high antioxidant activity. Overall, the present study offers clear evidence that these activeloaded films have the potential to be utilized as packaging material for enhancing food shelf life. (C) 2017 Elsevier Ltd. All rights reserved. (AU)

FAPESP's process: 13/14324-2 - Gelatin-based films with nanoemulsionated actives agents: development, characterization and application in food matrices
Grantee:Luis Jaime Pérez Córdoba
Support Opportunities: Scholarships in Brazil - Doctorate (Direct)
FAPESP's process: 15/22285-2 - Gelatin-based films loaded with nanoemulsified active compounds: development and characterization
Grantee:Luis Jaime Pérez Córdoba
Support Opportunities: Scholarships abroad - Research Internship - Doctorate (Direct)