Table 1. Microbial populations of rice with single treatment during washing (unit: log CFU/g)

Treatment		Non-inoculated rice		Bacteria-inoculated rice
Treatment		Total aerobicbacteria	Coliforms	B. cereus	E. coli
Non-treatment		3.77±0.32^1)a	3.31±0.16^a	3.02±0.33^a	4.29±0.23^a
Water	Wash water (3 times)	3.34±0.12^ab	3.00±0.21^bc	2.25±0.21^b	3.97±0.12^b
Disinfectant	ClO₂ (20 ppm, 5 min)	3.22±0.27^b	2.72±0.34^d	1.94±0.14^b	3.25±0.20^c
Disinfectant	NaOCl (100 ppm, 5 min)	3.13±0.22^b	2.53±0.11^d	1.91±0.34^b	3.10±0.21^c
Ultrasound	Ultrasound (40 kHz, 10 min)	3.11±0.30^ab	2.76±0.10^c	2.23±0.13^b	3.69±0.06^b

Values are mean±standard deviation.
Indicates significant difference within same each column (p<0.05).