Diffusivity of potassium sorbate in κ-carrageenan based antimicrobial film

J. H. Choi; W. Y. Choi; D. S. Cha; M. J. Chinnan; H. J. Park; D. S. Lee; J. M. Park

doi:10.1016/j.lwt.2004.07.004

Diffusivity of potassium sorbate in κ-carrageenan based antimicrobial film

J. H. Choi, W. Y. Choi, D. S. Cha, M. J. Chinnan, H. J. Park, D. S. Lee, J. M. Park

Research output: Contribution to journal › Article › peer-review

100 Citations (Scopus)

Abstract

The diffusion of potassium sorbate incorporated into κ-carrageenan based antimicrobial film was measured at 5 s intervals using a diffusion cell. The kinetics of potassium sorbate release followed Fick's law of diffusion, as shown by diffusional exponent characteristic n-value and high correlation coefficients between experimental and theoretical data. The effects of solution pH at the film surface (3.8, 5.2 and 7.0) and temperature (5, 25 and 40°C) on diffusion were investigated. Diffusion was found to be unaffected by adjacent solution pH in the range of values tested, but a decrease in temperature from 40 to 5°C resulted in a reduction of diffusion coefficients from 4.24×10^-13 to 1.29×10^-13 m²/s at pH 5.2.

Original language	English
Pages (from-to)	417-423
Number of pages	7
Journal	LWT
Volume	38
Issue number	4
DOIs	https://doi.org/10.1016/j.lwt.2004.07.004
Publication status	Published - 2005 Jun

Keywords

Active packaging
Diffusivity
Potassium sorbate
κ-carrageenan

ASJC Scopus subject areas

Food Science

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10.1016/j.lwt.2004.07.004

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title = "Diffusivity of potassium sorbate in κ-carrageenan based antimicrobial film",

abstract = "The diffusion of potassium sorbate incorporated into κ-carrageenan based antimicrobial film was measured at 5 s intervals using a diffusion cell. The kinetics of potassium sorbate release followed Fick's law of diffusion, as shown by diffusional exponent characteristic n-value and high correlation coefficients between experimental and theoretical data. The effects of solution pH at the film surface (3.8, 5.2 and 7.0) and temperature (5, 25 and 40°C) on diffusion were investigated. Diffusion was found to be unaffected by adjacent solution pH in the range of values tested, but a decrease in temperature from 40 to 5°C resulted in a reduction of diffusion coefficients from 4.24×10-13 to 1.29×10-13 m2/s at pH 5.2.",

keywords = "Active packaging, Diffusivity, Potassium sorbate, κ-carrageenan",

author = "Choi, {J. H.} and Choi, {W. Y.} and Cha, {D. S.} and Chinnan, {M. J.} and Park, {H. J.} and Lee, {D. S.} and Park, {J. M.}",

year = "2005",

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doi = "10.1016/j.lwt.2004.07.004",

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AU - Choi, J. H.

AU - Choi, W. Y.

AU - Cha, D. S.

AU - Chinnan, M. J.

AU - Park, H. J.

AU - Lee, D. S.

AU - Park, J. M.

PY - 2005/6

Y1 - 2005/6

N2 - The diffusion of potassium sorbate incorporated into κ-carrageenan based antimicrobial film was measured at 5 s intervals using a diffusion cell. The kinetics of potassium sorbate release followed Fick's law of diffusion, as shown by diffusional exponent characteristic n-value and high correlation coefficients between experimental and theoretical data. The effects of solution pH at the film surface (3.8, 5.2 and 7.0) and temperature (5, 25 and 40°C) on diffusion were investigated. Diffusion was found to be unaffected by adjacent solution pH in the range of values tested, but a decrease in temperature from 40 to 5°C resulted in a reduction of diffusion coefficients from 4.24×10-13 to 1.29×10-13 m2/s at pH 5.2.

AB - The diffusion of potassium sorbate incorporated into κ-carrageenan based antimicrobial film was measured at 5 s intervals using a diffusion cell. The kinetics of potassium sorbate release followed Fick's law of diffusion, as shown by diffusional exponent characteristic n-value and high correlation coefficients between experimental and theoretical data. The effects of solution pH at the film surface (3.8, 5.2 and 7.0) and temperature (5, 25 and 40°C) on diffusion were investigated. Diffusion was found to be unaffected by adjacent solution pH in the range of values tested, but a decrease in temperature from 40 to 5°C resulted in a reduction of diffusion coefficients from 4.24×10-13 to 1.29×10-13 m2/s at pH 5.2.

KW - Active packaging

KW - Diffusivity

KW - Potassium sorbate

KW - κ-carrageenan

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DO - 10.1016/j.lwt.2004.07.004

M3 - Article

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SN - 0023-6438

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EP - 423

JO - LWT

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IS - 4

ER -

Diffusivity of potassium sorbate in κ-carrageenan based antimicrobial film

Abstract

Keywords

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