アミラ-ゼインヒビタ-生産放線菌の海洋からの分離とその分類学的諸性状〔英文〕

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A marine actinomycete which produced an extracellular α-amylase inhibitor was isolated and identified. A new and simple starch agar plate method was employed for a quick screening of the inhibitor producer. Out of 5, 158 isolates from various sea areas, only one strain which was isolated from the sediment of neritic sea area was found to produce an amylase inhibitor. The strain showed abundant to moderate growth covered with aerial mycelium of light gray to light brownish color on all the media except for glucose-asparagine agar. The spores were cylindrical and the surface was smooth. Sporangia and flagellated spores were not observed. The strain showed taxonomic features closely identical to the strain type of Streptomyces corclrorusii except for the temperature range for growth, NaCl tolerance and intracellular pigment production in the presence of seawater. From these differences, the strain is named Streptanyces corchorusii subsp. rhodanarinas subsp. nov. This is the first report of an amylase inhibitor producing organism from marine environment.
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