To investigate the effects of temperature and relative humidity (RH) on the absorption kinetics of a moisture-activated non-metallic oxygen scavenger for packed foods, the kinetic parameters were evaluated at 11,… Click to show full abstract
To investigate the effects of temperature and relative humidity (RH) on the absorption kinetics of a moisture-activated non-metallic oxygen scavenger for packed foods, the kinetic parameters were evaluated at 11, 33, 75, 99% RH and 5, 23, and 60 °C. The absorption kinetics were well described by a first-order reaction. This non-metallic oxygen scavenger requires a high RH to ensure a high oxygen absorption capacity; average oxygen absorption capacity was 10.98, 23.74, 43.99, 50.4 mL at 11, 33, 75, 99% RH, respectively, at 23 °C. As the temperature increased, the oxygen scavenging capacity also increased. The oxygen absorption rate constant increased from 0.251 h− 1 at 5 °C to 1.406 h− 1 at 60 °C. It is important to consider the storage conditions before using a non-metallic scavenger for active food packaging use in order to ensure selection of the appropriate scavenger type.
               
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