streptococcus thermophilus
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Streptococcus thermophilus also known as Streptococcus salivarius subsp.thermophilus[1][2] is a gram-positive bacterium, and a fermentative facultative anaerobe, of the viridans group.[3] It tests negative for cytochrome, oxidase, and catalase, and positive for alpha-hemolytic activity.[3] It is non-motile and does not form endospores.[3]S. thermophilus is fimbriated.[4] It has an optimal growth temperature range of 35 - 42 °C while L. bulgaricus has an optimal range of 43 - 46 °C.
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it is a gram positive bacteria.
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