海水性Aeromonasの研究
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概要
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Forty six strains of marine Aeromonas were isolated from the sea water and the surface slime of sea fish which were caught in the area of Suruga Bay. Morphological, cultural, biochemical and taxonomical studies were carried out on these isolates. Furthermore the author investigated both the histidine decarboxyluse activity and the food decomposing ability. The results obtained are summarized as follows. 1. This organism, gram negative polar flagellated rods, are widely distributed in both the sea water and the fish skin in the area of Suruga Bay. 2. Growth of the bacteria occured when sodium chloride was added in media at the concentration of 2-3 % as well as the medium was prepared with sea water. 3. The biochemical characteristics of this bacteria are following: indole not produced, gelatine not liquefied, reduce nitrites from nitrates, H_2S produced weekly, litmus milk no change, methylred test negative, Voges proskauer reaction negative, occasionally urease positive, acid and gas produced from glucose, fructose, mannose, maltose, starch, occasionally sucrose, but not acid and gas produced from lactose. 4. From the morphological and cultural natures, the organism should be classified as a sea water form of Aeromonas. 5. This bacteria have had strong activity of histidine decarboxylation and 21 strains out of 46 produced histamin in large amount in the medium containing histidine. The author emphasis that the organism as well as Proteus morganii may be an important causative agent of histamine poisoning.
- 千葉大学の論文