Document Detail

Edible moisture barriers: how to assess of their potential and limits in food products shelf-life extension?
MedLine Citation:
PMID:  19399672     Owner:  NLM     Status:  MEDLINE    
Control of moisture transfer inside composite food products or between food and its environment remains today a major challenge in food preservation. A wide rage of film-forming compounds is now available and facilitates tailoring moisture barriers with optimized functional properties. Despite these huge potentials, a realistic assessment of the film or coating efficacy is still critical. Due to nonlinear water sorption isotherms, water-dependent diffusivities, and variations of physical state, modelling transport phenomena through edible barriers is complex. Water vapor permeability can hardly be considered as an inherent property of films and only gives a relative indication of the barrier efficacy. The formal or mechanistic models reported in literature that describe the influence of testing conditions on the barrier properties of edible films are reviewed and discussed. Most of these models have been validated on a narrow range of conditions. Conversely, few original predictive models based on Fick's Second Law have been developed to assess shelf-life extension of food products including barriers. These models, assuming complex and realistic hypothesis, have been validated in various model foods. The development of nondestructive methods of moisture content measurement should speed up model validation and allow a better comprehension of moisture transfer through edible films.
C Bourlieu; V Guillard; B Vallès-Pamiès; S Guilbert; N Gontard
Publication Detail:
Type:  Journal Article; Review    
Journal Detail:
Title:  Critical reviews in food science and nutrition     Volume:  49     ISSN:  1549-7852     ISO Abbreviation:  Crit Rev Food Sci Nutr     Publication Date:  2009 May 
Date Detail:
Created Date:  2009-04-28     Completed Date:  2009-05-28     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8914818     Medline TA:  Crit Rev Food Sci Nutr     Country:  United States    
Other Details:
Languages:  eng     Pagination:  474-99     Citation Subset:  IM    
UMR 1208 Ingénierie des Agropolymères et Technologies Emergentes, CIRAD, INRA, Montpellier SupAgro, Université Montpellier 2, Montpellier, France.
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MeSH Terms
Food Packaging / instrumentation*
Food Preservation* / methods
Models, Theoretical
Plant Proteins
Resins, Plant
Time Factors
Water / chemistry*
Reg. No./Substance:
0/Colloids; 0/Lipids; 0/Plant Proteins; 0/Polysaccharides; 0/Resins, Plant; 0/Waxes; 7732-18-5/Water; 9000-59-3/shellac

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