Table 1. Effect of single and combined treatments on the germination rates and hygiene indicator bacteria of mung bean seeds and sprouts
Treatment | Time(min) | Germination rates (%) | Viable cells (log CFU/g)4) |
Total aerobic bacteria | Coliform | E. coli |
seeds | sprouts | seeds | sprouts | seeds | sprouts |
Control | | 98.44±0.71a5) | 2.30±0.22a | 7.91±0.10 | ND6) | 7.71±0.07a | ND | ND |
UVC LED1) | 5 | 94.00±1.61b | 1.75±0.21b | 7.95±0.14 | ND | 7.70±0.04a | ND | ND |
30 ppm SAEW | 5 | 94.32±0.58ab | 1.56±0.22bc | 7.90±0.14 | ND | 7.62±0.07a | ND | ND |
UVC W-LED2) | 3 | 97.57±0.44a | 1.66±0.10bc | 7.90±0.12 | ND | 7.67±0.04a | ND | ND |
5 | 97.60±0.94a | 1.13±0.12de | 7.89±0.09 | ND | 7.53±0.12ab | ND | ND |
Mild heat3) | 1 | 96.60±1.20a | 1.40±0.32c | 7.88±0.14 | ND | 7.48±0.04ab | ND | ND |
3 | 97.89±1.16a | 1.08±0.15e | 7.82±0.15 | ND | 7.22±0.45bc | ND | ND |
SAEW + UVC W-LED | 3 | 96.74±1.39a | 1.39±0.23cd | 7.88±0.12 | ND | 7.61±0.04a | ND | ND |
5 | 96.37±0.63ab | ND | 7.87±0.10 | ND | 7.49±0.08ab | ND | ND |
SAEW + Mildheat | 3 | 95.79±2.51ab | ND | 7.93±0.12 | ND | 7.17±0.33bc | ND | ND |
5 | 96.66±2.08a | ND | 7.85±0.22 | ND | 7.10±0.39c | ND | ND |
UVC LED, ultraviolet-C light emitting diodes (275 nm); SAEW, slightly acidic electrolyzed water.
Washed in tap water equipped with UVC waterproof-LED.
Blanched at 60°C.
Mung bean seeds and sprouts (n=3) were analyzed at 0 and 4 days, respectively.
Different letters (a-e) within the same column represent significant differences by Duncan’s multiple range test (p<0.05).
ND, not detected.