Table 1. Biofilm-formation ability of Kocuria salsicia isolates (KS1–KS9) in phosphate buffered saline (PBS) compared with that of Staphylococcus aureus ATCC 29213 at 5°C, 15°C, 25°C, 30°C, 37°C, and 42°C

Strains	Optical density of isolates¹⁾
	Temperature (°C)²⁾
	5	15	25	30	37	42
NC	0.047±0.001	0.048±0.001	0.046±0.005	0.043±0.005	0.046±0.002	0.047±0.003
PC	0.051±0.006^a	0.050±0.005^a	0.051±0.001^a	0.060±0.011^a	0.052±0.002^a	0.053±0.003^a
KS1	0.048±0.003^a	0.052±0.005^a	0.053±0.002^a	0.059±0.002^a	0.056±0.002^a	0.053±0.001^a
KS2	0.053±0.004^a	0.053±0.000^a	0.056±0.002^a	0.062±0.003^a	0.057±0.003^a	0.053±0.001^a
KS3	0.053±0.004^a	0.053±0.007^a	0.054±0.000^a	0.064±0.003^a	0.051±0.001^a	0.055±0.003^a
KS4	0.048±0.001^a	0.050±0.003^a	0.052±0.003^a	0.055±0.002^a	0.053±0.003^a	0.055±0.003^a
KS5	0.053±0.005^a	0.054±0.002^a	0.053±0.001^a	0.054±0.004^a	0.057±0.001^a	0.054±0.002^a
KS6	0.049±0.003^a	0.053±0.003^a	0.059±0.005^a	0.061±0.001^a	0.059±0.001^a	0.056±0.002^a
KS7	0.050±0.004^a	0.053±0.003^a	0.055±0.003^a	0.054±0.002^a	0.052±0.002^a	0.053±0.001^a
KS8	0.056±0.006^a	0.051±0.006^a	0.055±0.002^a	0.059±0.005^a	0.055±0.000^a	0.053±0.000^a
KS9	0.057±0.005^a	0.059±0.008^a	0.055±0.004^a	0.064±0.004^a	0.065±0.005^b	0.057±0.001^a

Optical density of isolates is expressed as mean±SD.
Biofilm formation by temperature (°C).
Different letters indicate statistical difference at p<0.05 compared to S. aureus ATCC 29213 (Tukey method).
ATCC, American Type Culture Collection; NC, negative control (PBS); PC, positive control (S. aureus ATCC 29213+PBS); KS1–KS9, K. salsicia KS1–KS9+PBS.