nisin powder in wooden bowl, top view. food additive e234. nizin used for food packaging and can serve as preservative

food additive e234 nisin antibiotic powder lantibiotics polycyclic antibacterial peptide lactococcus lactis natural preservative antimicrobial didehydroaminobutyric acid amino dextrose chemical white synthes soluble additives industry natamycin bacteriocin bacteria pathogen medicine product resistance veterinary grey compound heap pile top view scattered dust wooden scoop bowl dish plate table nizin used packaging serve view e234 preservative