감초 추출물로부터 항균성 물질의 분리 및 동정

국문 초록 (Abstract)

식품부패미생물에 대한 감초추출물의 항균력을 확인하고 유효성분을 분리한 후 그 구조를 확 인 하였다. 감초추출물은 대표적인 항균제인 메타중아황산칼륨과 myconazole과 비슷한 항균 활성을 나 타내었다. 용매분획을 실시한 결과 chloroform fraction이 가장 항균활성이 높은 것으로 나타났다. 이에 chloroform분획을 silica gel column chromatography를 통해 분리하여 항균활성이 가장 큰 분획물인 KC를 분리하였다. 이 화합물은 ESI-MS 와 1H-NMR, 13C-NMR 결과로부터 활성물질의 구조를 동정 하였으며 그 결과 KC는 (R)-glabridin인 것으로 확인하였다.

다국어 초록 (Multilingual Abstract)

Antimicrobial properties of Licorice(Glycyrrhizae radix L.) against food spoilage microorganism, Bacillus subtilis KCTC 1021 was investigated. Antibacterial activity of the essential oil was as equivalent as Potassium metabisulfite and myconazole. The licorice extracts was fractionated to hexane, chloroform, ethyl acetate, butanol and water fraction. Chloroform fraction showed the highest inhibitory effect on the Bacillus subtilis KCTC 1021. Chloroform fraction was further fractionated by silica gel column chromatography and thin layer chromatography(TLC). The antibacterial compound was isolated from their fractions and its chemical structures was identified as (R)-glabridin by ESI-MS, 1H-NMR and 13C-NMR.

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