느릅나무 뿌리껍질 성분의 유방염균에 대한 항균효과 = Effects of Root Bark Components from the Elm (Ulmus davidiana var japonica) on Mastitis Pathogens

다국어 초록 (Multilingual Abstract)

The methanolic extracts from the elm (Ulmus davidiana var japonica) root barks which have been known as an oriental medicine Eubackpie for the treatment of edema, ulcer and inflammation were examined for their bacteriocidal effects on mastitis pathogens of milk cows. The growth of the pathogenic bacteria such as Staphylococcus aureus and Streptococcus sp. No. 12 was markedly inhibited by the chloroform fraction among the extracts, and these antibacterial activities were also supported by MIC test. Water-soluble mucilage was obtained from the root barks with a yield of 36.8~40.2% by dry weight basis. This substance appeared to be a kind of polysaccharide with $61.0{\pm}1.0%$ carbohydrate content, and to have hygroscopic and astringent properties due to its high viscosity and water absorption.