Nisin Diffusion in Protein Films: Effects of Film Type and Temperature

Nisin Diffusion in Protein Films: Effects of Film Type and Temperature

Protein films [cast corn zein (CCZ), heat-pressed corn zein (HPCZ), cast wheat gluten (CWG), and heat-pressed wheat gluten (HPWG)] were studied at different exposure temperatures (5, 25, 35, and 45 °C) to determine nisin diffusion in aqueous model systems. Kinetics of nisin diffusion in protein film...

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Bibliographic Details
Published in:Journal of food science Vol. 67; no. 8; pp. 3019 - 3025
Main Authors: Teerakarn,A, Hirt, D.E, Acton, J.C, Rieck, J.R, Dawson, P.L
Format: Journal Article
Language:English
Published: Oxford, UK Blackwell Publishing Ltd 01-10-2002
Institute of Food Technologists
Wiley Subscription Services, Inc
Subjects:
activation energy
Biological and medical sciences
Corn
diffusivity
Food industries
Food science
Fundamental and applied biological sciences. Psychology
General aspects
gluten
Handling, storage, packaging, transport
nisin
protein films
Proteins
Temperature
Thin film coatings
Triticum aestivum
Wheat
wheat gluten
Zea mays
zein
Nisin
Temperature
protein films
Bacteriocin
Edible film
Packaging
Plant protein
diffusivity
Models
Zein
Conditioning
Antibacterial agent
Diffusion
Active packaging
Gluten
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Summary:Protein films [cast corn zein (CCZ), heat-pressed corn zein (HPCZ), cast wheat gluten (CWG), and heat-pressed wheat gluten (HPWG)] were studied at different exposure temperatures (5, 25, 35, and 45 °C) to determine nisin diffusion in aqueous model systems. Kinetics of nisin diffusion in protein films followed a Fickian diffusion model. The CCZ had the lowest nisin diffusivity and highest nisin retention. Diffusivities in HPCZ, CWG, and HPWG films were not significantly different. Temperature dependence of nisin diffusion in all films followed an Arrhenius model, which indicated no morphological changes within 5 to 45 °C. The activation energy for nisin diffusion in corn-zein films was higher than that in wheat-gluten films.
Bibliography:http://dx.doi.org/10.1111/j.1365-2621.2002.tb08853.x
ArticleID:JFDS3019
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ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0022-1147
1750-3841
DOI:10.1111/j.1365-2621.2002.tb08853.x