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Table 2 Released copper from TPS composite films containing Cu and Si-Cu particles to water and copper concentration in the simulant aqueous medium

From: Flexible thermoplastic starch films functionalized with copper particles for packaging of food products

Sample Released Cu (ng Cu2+/g TPS) Cu concentration in water (mg/L)
TPS/Cu0.25 34.4 ± 9.1 245.8 ± 44.2
TPS/Cu0.50 34.3 ± 4.6 257.6 ± 39.8
TPS/Cu0.75 41.4 ± 2.1 273.7 ± 28.5
TPS/Si-Cu0.25 5.1 ± 0.7 35.8 ± 14.1
TPS/Si-Cu0.50 6.6 ± 0.5 44.8 ± 6.1
TPS/Si-Cu0.75 4.6 ± 1.8 55.9 ± 14.8