시판 유제품 중에서 분리된 젖산균의 감마선 조사에 의한생존 효과
The Effect of Gamma Irradiation on the Survival of Lactic Acid Isolated from Commercial Daily Product
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초록
This study was conducted with effect of lactic acid bacteria by gamma irradiation. Lactic acid bacteria were exposed to irradiation with a single absorbed dose of 1, 2, 3, 4, 5, 6, 8, and10 kGy. Possible lactic acid bacteria, including Lactobacillus paracasei KCTC 13169, Lactobacilluscasei KCTC 3109, Lactobacillus acidophilus KCTC 3140, Lactobacillus plantarum subsp plantarumKCTC 3103, Lactobacillus debruekii subsp bulgaricus KCTC 3635, Streptococcus thermophilusKCTC 3658 were selected. The radiation sesitivities of lactic acid bacteria were expressed as D10values. The D10 values of Lactobacillus paracasei, Lactobacillus casei, Streptococcus thermophilus,Lactobacillus acidophilus, Lactobacillus plantarum, and Lactobacillus debruekii were calculated as0.42, 0.51, 0.47, 0.90, 0.44, and 0.61 kGy, respectively. Results suggest that L. acidiphilus has thehighly resistant to gamma irradiation.
Abstract
This study was conducted with effect of lactic acid bacteria by gamma irradiation. Lactic acid bacteria were exposed to irradiation with a single absorbed dose of 1, 2, 3, 4, 5, 6, 8, and10 kGy. Possible lactic acid bacteria, including Lactobacillus paracasei KCTC 13169, Lactobacilluscasei KCTC 3109, Lactobacillus acidophilus KCTC 3140, Lactobacillus plantarum subsp plantarumKCTC 3103, Lactobacillus debruekii subsp bulgaricus KCTC 3635, Streptococcus thermophilusKCTC 3658 were selected. The radiation sesitivities of lactic acid bacteria were expressed as D10values. The D10 values of Lactobacillus paracasei, Lactobacillus casei, Streptococcus thermophilus,Lactobacillus acidophilus, Lactobacillus plantarum, and Lactobacillus debruekii were calculated as0.42, 0.51, 0.47, 0.90, 0.44, and 0.61 kGy, respectively. Results suggest that L. acidiphilus has thehighly resistant to gamma irradiation.
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