How Long Do Things in Your Fridge Stay Good AFTER Their Expiration Dates? You know that awful feeling you get when you throw away bacon, just because somebody named Oscar printed numbers on the package saying it was expired? No? You've never thrown away bacon, under any circumstances? Good man.
Spirillum volutans with polar amphitrichous flagella. Spirillum volutans is a gram-negative, flagellated spirochete. The bacterium is found in freshwater. Volutin granules of polyphosphate can be seen. Brightfield. Magnification: 250x.
Spirillum volutans grows only under microaerobic conditions in a-peptone-succinate-salts broth, but cangrowaerobically whenthe peptone is replaced by vitamin-free acid-hydrolyzed casein broth. Theaddition ofpotassium metabisul-fite, norepinephrine, catalase or superoxide dismutase (SOD) permitted aerobic growthin peptone-succinate-salts broth. Acombination ofcatalase andSODhad. a synergistic effect. S. volutans lacked catalase and had only a low level of. peroxidaseactivity, butdidpossess SODactivity (12 to 14U/mgofprotein). The. organism was found to be extraordinarily sensitive to exogenous hydrogen. peroxide.