<prompt> tafadhali geuza maudhui haya ya swahili kwenda kwa kiingereza.nisin ina shughuli za antimicrobial dhidi ya anuwai anuwai ya bakteria ya gramu na spores zao ambazo husababisha kuharibika kwa chakula, na haswa huzuia bacilli sugu ya joto, kama vile b. stearother ..  <response>: nisin possesses anti-microbial activity against a wide range of gram-positive bacteria and their spores which causes food spoilage,especially inhibits the heat-resistant bacilli, such as b. stearothermophilus, ci. 