There is increasing interest in the development of biodegradable active packaging, as well as in the wide availability of resources and methods for its production. This study aimed to formulate and characterize biofilms with sodium caseinate (SC) and sorbitol (Sb), incorporating citral microparticles (CM) as antimicrobial. The active biofilms were prepared by the casting method and optimized by response surface methodology, minimizing transparency, opacity, and elastic modulus concerning the SC:Sb (between 1:0.5 and 1:1.5) and SC:CM (between 1:0.5 and 1:1.5) ratios. The thickness, color, mechanical, and microstructural properties of the biofilms made with the optimal conditions (the SC:Sb and SC:CM ratios of 1:0.91 and 1:0.95, respectively) were then characterized. In addition, Fourier transformed infrared (FT-IR) and mid-infrared (MID) spectroscopy were performed for qualitative purposes to assess the molecular interactions in the supplies and mixtures used in the formulation of the active biofilms. The optical, physical, and mechanical properties were experimentally evaluated at this optimum point. The FT-IR data indicate intermolecular interactions between the biofilm components. The active biofilms obtained under optimal conditions show a thickness of 150.0 mu m, with acceptable optical and mechanical properties. The active biofilm obtained may be a promising material for the packaging of perishable fresh foods.

Characterization, microstructure, and spectroscopic study of optimized sodium caseinate-sorbitol active biofilms with citral microencapsulate / Y. Ives, H. Alyssa, V. Luis. - In: POLYMER BULLETIN. - ISSN 0170-0839. - (2022 Jun 29). [Epub ahead of print] [10.1007/s00289-022-04345-5]

Characterization, microstructure, and spectroscopic study of optimized sodium caseinate-sorbitol active biofilms with citral microencapsulate

H. Alyssa
Secondo
;
2022

Abstract

There is increasing interest in the development of biodegradable active packaging, as well as in the wide availability of resources and methods for its production. This study aimed to formulate and characterize biofilms with sodium caseinate (SC) and sorbitol (Sb), incorporating citral microparticles (CM) as antimicrobial. The active biofilms were prepared by the casting method and optimized by response surface methodology, minimizing transparency, opacity, and elastic modulus concerning the SC:Sb (between 1:0.5 and 1:1.5) and SC:CM (between 1:0.5 and 1:1.5) ratios. The thickness, color, mechanical, and microstructural properties of the biofilms made with the optimal conditions (the SC:Sb and SC:CM ratios of 1:0.91 and 1:0.95, respectively) were then characterized. In addition, Fourier transformed infrared (FT-IR) and mid-infrared (MID) spectroscopy were performed for qualitative purposes to assess the molecular interactions in the supplies and mixtures used in the formulation of the active biofilms. The optical, physical, and mechanical properties were experimentally evaluated at this optimum point. The FT-IR data indicate intermolecular interactions between the biofilm components. The active biofilms obtained under optimal conditions show a thickness of 150.0 mu m, with acceptable optical and mechanical properties. The active biofilm obtained may be a promising material for the packaging of perishable fresh foods.
FT-IR; Active packaging; Atomic force microscopy; Microencapsulation; Scanning electron microscopy
Settore AGR/15 - Scienze e Tecnologie Alimentari
29-giu-2022
Article (author)
File in questo prodotto:
File Dimensione Formato  
Pre print Manuscrip Active biofilms-V2.pdf

accesso riservato

Tipologia: Pre-print (manoscritto inviato all'editore)
Dimensione 821.8 kB
Formato Adobe PDF
821.8 kB Adobe PDF   Visualizza/Apri   Richiedi una copia
s00289-022-04345-5.pdf

accesso riservato

Tipologia: Publisher's version/PDF
Dimensione 1.8 MB
Formato Adobe PDF
1.8 MB Adobe PDF   Visualizza/Apri   Richiedi una copia
Pubblicazioni consigliate

Caricamento pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/936143
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 1
  • ???jsp.display-item.citation.isi??? 1
social impact