Recently, consumers demand for healthy and fresh foods, including fresh ginseng
and ginseng sprouts has increased. However, evaluation of microbial safety for
ginseng sprouts have not been intensively conducted. The purpose of this study
was to investigate microbial contamination levels on ginseng sprouts produced on
20 different farms and green moss used as packaging material at these farms.
Microbial contamination levels of sanitary indicator microorganisms (total
aerobic bacteria, Escherichia coli, coliform, yeasts, and
molds) and foodborne pathogens (E. coli O157:H7,
Salmonella spp., Staphylococcus aureus,
Listeria monocytogenes, and Bacillus
cereus) were evaluated in ginseng sprouts and green moss. As a
result, the abundance of total aerobic bacteria in ginseng sprouts and green
moss ranged from 5.52-8.08 and 5.74-9.70 log CFU/g, respectively. The average
population of yeasts and molds on ginseng sprouts and green moss were observed
to be > 3 log CFU/g at all the farms. In particular, the average
populations of B. cereus in ginseng sprouts and green moss were
3.56 and 5.88 log CFU/g, respectively. Foodborne pathogens were not detected in
all ginseng sprouts. However, Staphylococcus aureus was
detected in 7 (41%) out of 17 green moss. Therefore, the study findings
highlight the need of developing an effective control strategy for eliminating
hazardous microorganisms, to improve the microbial safety of ginseng
sprouts.