Inactivation of Legionella pneumophila from Whirlpool Bath Waters by Grapefruit (Citrus paradisi) Seed Extract

KATSUNORI FURUHATA; CHIKAKU DOGASAKI; MOTONOBU HARA; MASAFUMI FUKUYAMA

doi:10.4265/bio.8.129

Inactivation of Legionella pneumophila from Whirlpool Bath Waters by Grapefruit (Citrus paradisi) Seed Extract

KATSUNORI FURUHATA, CHIKAKU DOGASAKI, MOTONOBU HARA, MASAFUMI FUKUYAMA

著者情報

キーワード: Grapefruit seed extract, Legionella pneumophila, Bactericidal activity

ジャーナルフリー

2003 年 8 巻 3 号 p. 129-132

DOI https://doi.org/10.4265/bio.8.129

詳細

Published: 2003/09/20 Received: 2003/02/10 Available on J-STAGE: 2010/06/28 Accepted: 2003/06/08 Advance online publication: - Revised: -
訂正情報
訂正日: 2010/06/28 訂正理由: - 訂正箇所: 論文抄録訂正内容: Wrong : We investigated the antibacterial effect of commercial grapefruit seed extract (GSE, Liquid), which has recently been attracting attention as a food additive, on Legionella pneumophila. The sensitivity test was performed using the disc method. All 25 strains tested were sensitive to GSE, and formed clear inhibition zones in its presence. The minimum inhibitory concentration (MIC) values were measured by the agar dilution method. The MIC of GSE in the strains was in the range of 98mg/l to 390mg/l, and the MIC₉₀ was 390mg/l. The minimum bactericidal concentration (MBC) values for the test strains were also determined. MBC₉₀ was 50, 000, 6, 300, and 3, 100mg/l when the exposure time was 1, 10, and 60 minutes, respectively. These bactericidal test results demonstrate that GSE has a bactericidal effect on L. pneumophila.
Right : We investigated the antibacterial effect of commercial grapefruit seed extract (GSE, Liquid), which has recently been attracting attention as a food additive, on Legionella pneumophila. The sensitivity test was performed using the disc method. All 25 strains tested were sensitive to GSE, and formed clear inhibition zones in its presence. The minimum inhibitory concentration (MIC) values were measured by the agar dilution method. The MIC of GSE in the strains was in the range of 98mg/l to 390mg/l, and the MIC₉₀ was 390mg/l. The minimum bactericidal concentration (MBC) values for the test strains were also determined. MBC₉₀ was 50, 000, 6, 300, and 3, 100mg/l when the exposure time was 1, 10, and 60 minutes, respectively. These bactericidal test results demonstrate that GSE has a bactericidal effect on L. pneumophila.

抄録

We investigated the antibacterial effect of commercial grapefruit seed extract (GSE, Liquid), which has recently been attracting attention as a food additive, on Legionella pneumophila. The sensitivity test was performed using the disc method. All 25 strains tested were sensitive to GSE, and formed clear inhibition zones in its presence. The minimum inhibitory concentration (MIC) values were measured by the agar dilution method. The MIC of GSE in the strains was in the range of 98mg/l to 390mg/l, and the MIC₉₀ was 390mg/l. The minimum bactericidal concentration (MBC) values for the test strains were also determined. MBC₉₀ was 50, 000, 6, 300, and 3, 100mg/l when the exposure time was 1, 10, and 60 minutes, respectively. These bactericidal test results demonstrate that GSE has a bactericidal effect on L. pneumophila.

責任著者(Corresponding author)

訂正情報

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