Listeria monocytogenes(Lm)에 항균성 이 있는 뽕나무와 고삼 75% 에탄올 추출물을 chloroform($CHCl_{3}$), ethyl acetate(EtOAc), butanol(BuOH), 물 순으로 순차 분획하여 얻은 분획물을 tryptic soy broth에 농도별로 첨가하여 5균주의 L. monocytogenes의 증식 저해효과를 관찰하였다. 뽕나무 추출물의 $CHCl_{3}$ 및 EtOAc 분획물은 실험 대상균주 모두에 뚜렷한 증식 억제효과를 보였고, 고삼은 Lm ATCC 19113균주에 대하여 $CHCl_{3}$ 분획물이 비교적 높은 항균성을 보였다. 뽕나무 추출물의 경우 Lm ATCC 19111 균주는 EtOAc 분획물 500ppm에서, Lm ATCC 19112 균주는 $CHCl_{3}$ 분획물 1000ppm에서, Lm ATCC 19113 균주는 EtOAc 분획물 500ppm에서, Lm ATCC 19114 및 15313 균주는 $CHCl_{3}$ 분획물 1000ppm에서 완전증식 억제효과를 보였다.
Ethanol 75% extracts of Morus alba Linne(Ma) and Sophora flavescens AITON(Sf) were fractionated by chloroform($CHCl_{3}$), ethyl acetate(EtOAc), butanol(BuOH) and water. Each fractionate was added to tryptic soy broth varying in extract levels and 5 strains of Listeria monocytogenes(Lm) were inoculated in them for comparing growth inhibition at $32^{circ}C$. The $CHCl_{3}$ and EtOAc fraction of Ma were superior in growth inhibition of 5 strains but only $CHCl_{3}$ fraction of Sf showed comparatively higher inhibition to Lm ATCC 19113. Lm ATCC 19111 and 19113 were totally inhibited by 500 ppm of EtOAc fraction and Lm ATCC 19112, 19114 and 15313 were also absolutely inhibited by 1000 ppm of $CHCl_{3}$ fraction of Ma 75% ethanol extract.
