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The measurement of carbon dioxide transmission of edible films by a static method

✍ Scribed by Ayranci, Erol; Tun�, Sibel; Et�i, Ahmet

Publisher
John Wiley and Sons
Year
1999
Tongue
English
Weight
77 KB
Volume
79
Category
Article
ISSN
0022-5142

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✦ Synopsis

A static method is proposed for the measurement of CO 2 transmission of edible ®lms. It is based on the absorption of CO 2 transmitted through the ®lm on an absorbent ascarite II. Water is evolved during absorption of CO 2 by ascarite II and that is absorbed by a desiccant, anhydrous CaCl 2 . Total CO 2 transmission is determined from the increase in weight of the absorbents. The transmission parameters, CO 2 transmission rate (CO 2 TR), CO 2 permeance and CO 2 permeability (CO 2 P), are also calculated. The edible ®lm used was composed of methyl cellulose and polyethylene glycol. An attempt was made to determine the optimum amounts of ascarite II and CaCl 2 to be used. Finally, the effect of CO 2 pressure on the transmission parameters was also examined. CO 2 TR was found to increase with increasing pressure while CO 2 permeance and CO 2 P values were found to decrease with increasing pressure.

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