Nisin is the most prominent lantibiotic and is used as a food preservative due to its high potency against certain Gram-positive bacteria. However, the effectiveness of nisin is often affected by environmental factors such as pH, temperature, food composition, structure, as well as food microbiota. The development of nisin resistance has been seen among various Gram-positive bacteria. The mechanisms under the acquisition of nisin resistance are complicated and may differ among strains. This paper presents a brief review of possible mechanisms o...