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Development of active packaging for the preservation of lyophilized pulp fruit
BMC Proceedings volume 8, Article number: P206 (2014)
Introduction
Innovative technologies are needed to maintain food freshness, quality and safety, while reducing concentrations of chemical additives. This work aimed the development of an active packaging material to preserve lyophilized tropical fruits pulp powder and to study the stability provided by the active packaging.
Methodology
Active packaging material was low density polyethylene (LDPE) film incorporated with Tinuvin 326(UV absorber) and iron powder in different concentrations (0-0.5% and 0-15% w/w, respectively). Eleven treatments were performed according to the central composite design (CCD) in order to evaluate changes in mechanical, physical and barrier properties of films. Moreover, the influence of selected optimal active packaging on the stability of lyophilized tropical fruits pulp was assessed.
Results
The incorporation of Tinuvin 326 in LDPE did not alter the physical and mechanical properties of the film. Tinuvin 326 promoted barrier activity to UV light with increasing concentrations while maintaining film transparency. Thus, incorporation of 0.5% Tinuvin 326 and 7.5% iron was considered the most suitable conditions according to the Response Surface Methodology, for the physicochemical and microbiological characteristics of lyophilized pulp. Moreover, the lyophilized tropical fruits pulp powder was stable for most of the analyzed parameters during storage of the products.
Conclusions
The developed packaging maintained the chemical integrity, physical properties and resistance to microbial growth of the packaged food, during the storage period. Due to their nature, this package may be produced on industrial scale for lyophilized products preservation, replacing laminated packaging. Therefore, developed active packaging has potential for the preservation of lyophilized fruits pulp powder.
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This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.
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Batista, R.A., Narain, N., Soares, N.d.F.F. et al. Development of active packaging for the preservation of lyophilized pulp fruit. BMC Proc 8 (Suppl 4), P206 (2014). https://doi.org/10.1186/1753-6561-8-S4-P206
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DOI: https://doi.org/10.1186/1753-6561-8-S4-P206