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Microbiology and Biotechnology Letters

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Food, Environment, and Other Topics in Biotechnology

Microbiol. Biotechnol. Lett. 2015; 43(4): 367-372

https://doi.org/10.4014/mbl.1511.11009

Received: November 13, 2015; Accepted: December 10, 2015

천문동 추출물의 호흡기 세균에 대한 항균활성 및 항산화

Antimicrobial Activity against Respiratory Bacteria by Asparagus Cochinchinensis Extracts and its Antioxidant Capacity

Min-Gi Jung 1, Su-In Kim 1, Hae-Jin Jeong 1, Chung-Yeol Lee 2, Hong-Joo Son 1, Dae-Youn Hwang 1, Hee-sup Lee 1 and Dong-Seob Kim 1*

1Department of Food Science & Technology, Pusan National University, Miryang 627-706, Republic of Korea, 2Kanglim Organic Co., Ltd., Miryang 627-881, Republic of Korea

Abstract

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This study was aimed at determining the antioxidant and antimicrobial effects of solvent extracts from Asparagus cochinchinensis. The Asparagus cochinchinensis was extracted with water, methanol, ethanol, n-hexane, dichloromethane, ethyl acetate, and ether. The antimicrobial activity of these extracts was determined by modified well diffusion methods against 4 species of respiratory disease bacteria (Staphylococcus aureus, Escherichia coli, Staphylococcus epidermidis, and Pseudomonas aeruginosa). In addition, the amount of total polyphenol and flavonoid content, and antioxidant activity was evaluated. Ethyl acetate extract of A. cochinchinensis exhibited higher antimicrobial activity against tested microorganisms than water, methanol, ethanol, n-hexane, dichloromethane, and ether extracts. For antioxidant activity, the ethyl acetate extract of A. cochinchinensis exhibited a notable effect on the scavenging of superoxide against DPPH (IC50 = 3.81 mg/ml). Finally, the total polyphenol and flavonoid contents were 14 ± 0.7 mg/g, and 0.50 ± 0.13 mg/g, respectively. These results can be regarded as basic research into A. cochinchinensis for the prevention of respiratory diseases. The results indicate that A. cochinchinensis may be utilized as a nutraceutical for respiratory diseases when the physiologically active substances of A. cochinchinensis are increased by further study.

Keywords: Antimicrobial activity, Respiratory disease, Antioxidant activity, Asparagus cochinchinensis, Pseudomonas aeruginosa, Well diffusion methods

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