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Table 1 Antimicrobial activity of TPS composite films containing Cu and Si-Cu particles against S. aureus and E. coli

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

Sample S. aureus E. coli
CFU/mL D% R (log) CFU/mL D% R (log)
TPS 2.6 × 106 1.6 × 107
TPS/Cu0.25 60 99.998 4.6 2.6 × 104 99.838 2.8
TPS/Cu0.50 32 99.999 4.9 4.0 × 103 99.975 3.6
TPS/Cu0.75 18 99.999 5.2 1.3 × 104 99.919 3.1
TPS/Si-Cu0.25 77 99.997 4.5 7.3 × 103 99.954 3.3
TPS/Si-Cu0.50 100 99.996 4.4 4.0 × 103 99.975 3.6
TPS/Si-Cu0.75 24 99.999 5.0 1.3 × 103 99.999 5.1