Table 3 The WI, silver content, and antibacterial rate of different washing times
Silk samples | Laundering cycles | Silver content (mg/kg) | WI | Antibacterial activities | |||
---|---|---|---|---|---|---|---|
S. aureus | E. coli | ||||||
Surviving cells (CFU/ml) | % reduction | Surviving cells (CFU/ml) | % reduction | ||||
Untreated | - | - | 90.79 | 2.28 × 106 | - | 4.37 × 106 | - |
Silver-treated fabrics | - | 98.65 | 86.32 | 1.16 × 103 | 99.49 | 8.74 × 102 | 99.98 |
5 | 95.02 | 86.43 | 3.44 × 103 | 98.49 | 1.74 × 103 | 99.96 | |
10 | 88.85 | 87.13 | 1.28 × 103 | 99.49 | 6.11 × 103 | 99.86 | |
20 | 87.14 | 87.58 | 2.53 × 103 | 98.89 | 1.48 × 103 | 99.96 | |
50 | 81.65 | 87.71 | 5.86 × 103 | 97.43 | 6.11 × 103 | 99.86 |