Antioxidative and Antimicrobial Activities of Pleurotus eryngii Extracts Prepared from Different Aerial Part

부위별 새송이버섯 추출물의 항산화 및 향균효과

  • Kim, Hyun-Jeung (Department of Food and Nutrition, Sungshin Women's University) ;
  • Ahn, Myung-Soo (Department of Food and Nutrition, Sungshin Women's University) ;
  • Kim, Gum-Hee (Department of Food Science and Nutrition, Hoseo University) ;
  • Kang, Myung-Hwa (Department of Food Science and Nutrition, Hoseo University)
  • 김현정 (성신여자대학교 식품영양학과) ;
  • 안명수 (성신여자대학교 식품영양학과) ;
  • 김금희 (호서대학교 식품영양학과) ;
  • 강명화 (호서대학교 식품영양학과)
  • Published : 2006.12.31

Abstract

Antioxidative and antimicrobial activities were measured for the Pleurotus eryngii (P. eryngii) solvent extracts in order to discover new functional activities. In P. eryngii, the powder moisture was 9.0%, and the carbohydrate, crude protein, crude ash and crude fat contents were 63.06, 20.70, 5.20 and 2.0%, respectively. Among the detected minerals, potassium (K) had the highest levels and manganese (Mn) the lowest. The amount of polyphenol in EtEx (Ethanol Extract) was 387 mg% for the whole body, 158 mg% for the stipe, and 593 mg% for the pileus. Higher levels of polyphenol in the entire body were found in the BuEx (Butanol Extract) (594 mg%) and WaEx (Water extract) (404 mg%) of the P. eryngii powder. BuEx had the highest level in the pileus, and EtEx and BuEx were higher than the other extracts in the stipe. The electron donating ability (EDA) of EtEx of the P. eryngii powder was the highest, at 91.12%, for the whole body, while it was the lowest, at 62.90%, in the stipe. In addition, the EDA of WaEx was 90.39% for the whole body. These EDA values were similar to those for tocopherol (93.93%) and BHT (96.72%), supporting the potential of these extracts to act as antioxidants. A number of the extracts were certified to have antimicrobial activities for small number of microorganisms, especially for gram-negative microorganisms. In other words, BuEx and EAEx in the pileus and WaEx in the stipe were found to inhibit the growth of Pseudomonas aeruginosa (gram negative). Additionally, EtEx and WaEx in all parts were shown to act as antimicrobial agents for Escherichia coli of gram negative.

Keywords

Pleurotus eryngii;electron donating ability (EDA);nitrite scavenging;SOD-liked activity;antimicrobial activity

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