Gelatin-based films containing hydrophobic plasticizers and saponin from Yucca schidigera as the surfactant


Autoria(s): ANDREUCCETTI, Caroline; CARVALHO, Rosemary A.; GROSSO, Carlos R. F.
Contribuinte(s)

UNIVERSIDADE DE SÃO PAULO

Data(s)

19/10/2012

19/10/2012

2010

Resumo

The aim of this study was to evaluate the incorporation of hydrophobic plasticizers (acetyltributyl citrate - ATB, tributyl citrate - TB and acetyltriethyl citrate - ATC) in a matrix of gelatin, using the saponin extracted from Yucca schidigera (yucca) as emulsifier, in the production of biodegradable emulsified films using the casting technique. High levels of hydrophobic plasticizers were incorporated, reaching up to 75% of plasticizer in relation to the protein (w/w) for ATB and TB, and up to 60% for ATC. The minimum values of water vapor permeability were 0.08, 0.07 and 0.06 g mm m(-2) h(-1) kPa(-1) for ATB, TB and ATC respectively, with no significant differences (p > 0.05). The water solubility of the films ranged from 21% to 59.5%. Although the WVP decreased, both scanning electron microscopy and laser scanning confocal microscopy indicated that the incorporation of the hydrophobic plasticizers did not occur homogeneously in the film matrix. (C) 2010 Elsevier Ltd. All rights reserved.

Identificador

FOOD RESEARCH INTERNATIONAL, v.43, n.6, p.1710-1718, 2010

0963-9969

http://producao.usp.br/handle/BDPI/26815

10.1016/j.foodres.2010.05.013

http://dx.doi.org/10.1016/j.foodres.2010.05.013

Idioma(s)

eng

Publicador

ELSEVIER SCIENCE BV

Relação

Food Research International

Direitos

restrictedAccess

Copyright ELSEVIER SCIENCE BV

Palavras-Chave #Emulsified films #Gelatin #Citrate esters #Saponin #Yucca schidigera #WATER-VAPOR PERMEABILITY #HYDROXYPROPYL METHYLCELLULOSE FILMS #SODIUM CASEINATE FILMS #ACID-BEESWAX MIXTURES #EDIBLE FILMS #PHYSICAL-PROPERTIES #BARRIER PROPERTIES #SKIN GELATIN #FATTY-ACIDS #MECHANICAL-PROPERTIES #Food Science & Technology
Tipo

article

original article

publishedVersion