leuconostoc gelidum leuconostoc gelidum leuconostoc gelidum is a gram-positive lactic acid bacterium; its type strain is ncfb 2775. its genome has been sequenced. its name derives from the fact that it was first isolated from chill-stored meats. leuconostoc gelidum scientific classification domain: bacteria phylum: bacillota class: bacilli order: lactobacillales family: lactobacillaceae genus: leuconostoc species: l. gelidumshaw and harding 1989 binomial name leuconostoc gelidum synonyms leuconostoc gasicomitatum björkroth et al. 2001