국내 유통 중인 새싹삼과 포장용 청이끼에 대한 미생물 오염도 조사
Investigation of microbial contamination levels on ginseng sprouts and green moss used as domestic packaging material
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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.
Abstract
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.
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