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Title: 病原性好塩細菌のクロルテトラサイクリンによる発育阻止に対する培養温度並びに塩分濃度の影響
Other Titles: Influence of Temperature and Salinity on Sensitivity of So-called Pathogenic Halophilic Bacteria to Chlortetracycline
Authors: 谷口, 忠敬 / 銭谷, 武平
Authors (alternative): Taniguti, Tadataka / Zenitani, Buhei
Issue Date: Mar-1963
Publisher: 長崎大学水産学部
Citation: 長崎大学水産学部研究報告, v.14, pp.25-29; 1963
Abstract: The sensitivity of TAKIKAWA's so-called pathogenic halophilic bacteria to chlortetracycline (CTC) has been tested by varying cultural temperature or the concentrations of sodium chloride in media. The results obitaned are as follows: 1) In the nutrient broth containing 3 per cent sodium chloride, the minimal growth inhibitory concentration (MIC) of the 21 strains of "pathogenic halophilic bacteria " to CTC was the range of 0.25 to 1.75 ppm. These results of MIC appear to be the same degree in MIC against the bacteria isolated from sea water (Table 1 and 2). 2) Influence of lowering the temperature from 37℃ to 20℃ of incubation resulted in a decrease of MIC as shown in Table 3. The differences in MIC at 20℃ and 37℃ respectively varied with the test strain of "pathogenic halophilic bacteria ". 3) In the nutrient broth prepared with sea water, MIC of " pathogenic halophilic bacteria " to CTC was relatively high values, 20 to 35 ppm. However, MIC in sea water media was lowered by decreasing salinity in the media (Fig. 1). The MIC of CTC against " pathogenic halophilic bacteria " in the media prepared with a diluted sea water to six-fold was approximately 5 to 10 ppm. These tendencies were also recognized from the experiments on the media containing the different concentrations of sodium chloride (Table 4) / 病原性好塩細菌のクロールテトラサイクリン感受性について,培養温度並びに培地中の塩分濃度の影響について試験した. 1) 3%食塩肉汁培地中では病原性好塩細菌に対するCTCのMICは0.25~1.75ppmであって,海水から分離したPseudomonas属に対するそれと同程度であった. 2) MICは37℃培養で最も大きく,温度が低い程小さくなる.試験温度によるMICの相違の程度は菌株によって異った, 3) 食塩含有培地では食塩濃度が低い程MICも低下した.海水調製肉汁ではMICは20-35ppmの高い値で,稀釈するに伴い低下し,6倍稀釈海水の肉汁培地では5~10ppmであった.
URI: http://hdl.handle.net/10069/31641
ISSN: 05471427
Type: Departmental Bulletin Paper
Text Version: publisher
Appears in Collections:第14号

Citable URI : http://hdl.handle.net/10069/31641

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