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. 2010 Feb 6;47(1):109–113. doi: 10.1007/s13197-010-0003-7

Permeability of edible coatings

B Mishra 1,✉, B S Khatkar 2, M K Garg 3, L A Wilson 4
PMCID: PMC3550979  PMID: 23572611

Abstract

The permeabilities of water vapour, O2 and CO2 were determined for 18 coating formulations. Water vapour transmission rate ranged from 98.8 g/m2.day (6% beeswax) to 758.0 g/m2.day (1.5% carboxymethyl cellulose with glycerol). O2 permeability at 14 ± 1°C and 55 ± 5% RH ranged from 1.50 to 7.95 cm3cm cm−2s−1Pa−1, with CO2 permeability 2 to 6 times as high. Permeability to noncondensable gases (O2 and CO2) was higher for hydrophobic (peanut oil followed by beeswax) coatings as compared to hydrophilic (whey protein concentrate and carboxymethyl cellulose).

Keywords: Edible coatings, Water vapour, O2, CO2, Permeability

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