Evaluation of the water vapor permeability for whey protein/chitosan films and its effect on respiration of coated banana

Authors

  • Kadaffi León Arce Ortiz Grupo de investigación GIPAB, Universidad del Valle, Cali, Colombia
  • Karen Johana Ortega Villalba Grupo de investigación GIPAB, Universidad del Valle, Cali, Colombia
  • Claudia Isabel Ochoa-Martinez Grupo de investigación GIPAB, Universidad del Valle, Cali, Colombia
  • Carlos Vélez Pasos Grupo de investigación GIPAB, Universidad del Valle, Cali, Colombia

DOI:

https://doi.org/10.26461/11.08

Keywords:

Coating, edible film, biodegradable, permeability, respiration

Abstract

The coatings and films prepared whey (WPI) and chitosan (CHI) are known to be antifungal and also a barrier to the transference of water vapor, having an effect on the preservation of fruits. The aim of this study was to determine the effect of a coating of WPI and CHI on respiration of banana during storage at ambient conditions (25 ± 3 °C and 75 ± 5% RH) and its relation to water vapor permeability (PVA) of the films. Different concentrations of WPI and CHI were evaluated. CHI was used at 75% of deacetylation (solution of 1,2%, 1,5% and 1,8% w / v) and WPI of 96% (solution 3% and 4% w/v). The respiration rate was determined using a digital respirometer by measuring each sample during 55 minutes. The best coating was 1,5% -WPI CHI 3%. In this treatment the maturity and respiration was controlled and the climacteric peak occurred on day 9 of storage with 109,84 mg CO2/kg-h (in the control sample occurred on day 7 with 172,71 mg CO2/kg-h). The water vapor permeability of the film made with this formulation had an intermediate value (7,43x10-4g-mm / m2-h-Pa) over other formulations. Films with the highest and the lowest permeability shown the highest respiration rates.

Downloads

Download data is not yet available.

Published

2016-07-23

Issue

Section

Articles

How to Cite

Evaluation of the water vapor permeability for whey protein/chitosan films and its effect on respiration of coated banana. (2016). INNOTEC, 1(11 ene-jul), 59-64. https://doi.org/10.26461/11.08