The influence of Aloe vera gel incorporation on the physicochemical and mechanical properties of banana starch-chitosan edible films.
J Sci Food Agric
; 98(11): 4042-4049, 2018 Aug.
Article
em En
| MEDLINE
| ID: mdl-29377147
ABSTRACT
BACKGROUND:
Aloe vera (AV) gel is a promising material in food conservation, given its widely reported antimicrobial and antioxidant activity; however, its application in the formation of edible films and coatings has been small owing its low film-forming capability. The aim of this study was to investigate the physicochemical properties of film-forming solutions and films prepared using unripe banana starch-chitosan and AV gel at different AV gel concentrations.RESULTS:
Our results showed that AV gel considerably affected the rheological and optical properties of the edible coatings, mainly due to increased amounts of solids brought by the AV gel. Film-forming capacity and physicochemical properties were also studied; most of the film properties were affected by the inclusion of AV gel, with decreased water vapor permeability, tensile strength and elongation at break. Fourier transform infrared studies showed that the inclusion of AV gel disrupts the interaction between starch and chitosan molecules; however, further studies are needed to fully understand the specific interactions between the components of AV gel and both starch and chitosan molecules.CONCLUSION:
Our results suggest that the addition of AV gel creates a crosslinking effect between the phenolic compounds in AV gel and starch molecules, which disrupts the starch-chitosan interaction and greatly affects the properties of both the film-forming solution and edible films. © 2018 Society of Chemical Industry.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Polímeros
/
Amido
/
Extratos Vegetais
/
Embalagem de Alimentos
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Musa
/
Preparações de Plantas
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Quitosana
Idioma:
En
Revista:
J Sci Food Agric
Ano de publicação:
2018
Tipo de documento:
Article
País de afiliação:
Colômbia