The influence of PBAT content in the nanocapsules preparation and its effect in essential oils release

Author(s)

da Silva Barbosa, Rennan Felix ^[1] ; de Souza, Alana Gabrieli ^[1] ; Rangari, Vijaya ^[2] ; Rosa, Derval dos Santos ^[1]

Affiliation

^[1] Univ Fed ABC UFABC Santo Andre, Ctr Engn Modelagem & Ciencias Socials Aplicadas C, Ave Estados 5001, BR-09210580 Santo Andre, SP - Brazil

^[2] Tuskegee Univ, Dept Mat Sci & Engn, Tuskegee, AL 36088 - USA

• Document type: Journal article
• Source: Food Chemistry; v. 344, MAY 15 2021.
• Web of Science Citations: 1

Abstract

Nanoencapsulation provides new alternatives for the food industry, enabling a controlled and slow release of active antimicrobial agents, such as essential oils (EO). Poly (butylene adipate-co-terephthalate) (PBAT) nanocapsules loaded with linalool EO were prepared using an extrusion method with 1, 3, and 5% w/v (PBAT to chloroform). Nanocapsules' sizes ranged from 100 to 250 nm and were spherical. The release profile was studied using an ethanoic medium over 24 h, and according to the Korsmeyer-Peppas model, a Fick diffusion mechanism was involved. FT-IR and thermogravimetric analyses confirmed EO encapsulation with an encapsulation efficiency of 55%, 71%, and 74% for 1, 3, and 5%, respectively. The results indicated that encapsulation depended on organic phase concentration, with higher PBAT contents achieving better results. The resulting nanocapsules had antimicrobial activity against E. coli, which could be extended to develop active packaging systems. (AU)

• FAPESP's process: 18/25239-0 - Evaluation of dispersion of modified cellulose nanostructures in bionanocomposites
• Grantee: Derval dos Santos Rosa
• Support Opportunities: Scholarships abroad - Research
• FAPESP's process: 18/11277-7 - PBAT films with cellulose nanostructures treated with essential oils encapsulated for active packaging
• Grantee: Derval dos Santos Rosa
• Support Opportunities: Regular Research Grants