Antioxidative and antimicrobial activities of medicinal plant extracts for screening phytobiotic material = Phytobiotic 소재 선발을 위한 약용식물 추출물의 항산화 및 항균 활성

Abstract

For this study, plant material for development of phytobiotics (feed additives made with plant extract) was screened. Among hot-water extracts of 9 medicinal plants, Fallopia japonica showed the highest antioxidative activity; the electron donating ability (EDA) and nitrite scavenging ability were 86.9% and 92.7%, respectively. Also, F. japonica had the antimicrobial activity for Pseudomonas aeruginosa, Escherichia coli, Bacillus cereus, Salmonella Typhimurium, Listeria monocytogenes, Klebsiella pneumoniae, Staphylococcus aureus. Specially, antimicrobial activity of F. japonica against K pneumoniae, and S. aureus was very strong. IC50 of F. japonica against K. pneumoniae, and S. aureus was 6.24 mg/mL and 1.8 mg/mL respectively. These results suggested that F. japonica was a candidate for a phytobiotic material.