Kalmar "Family Lactobacteriaceae" tana nufin dangin taxonomic na ƙwayoyin cuta na Gram-positive waɗanda galibi ana samun su a cikin muhalli, da kuma a cikin hanyoyin narkewar abinci da urogenital na dabbobi da mutane. Wadannan kwayoyin cuta ne kwayoyin lactic acid, wanda ke nufin cewa suna samar da lactic acid a matsayin abin da ya haifar da metabolism. Iyalin Lactobacteriaceae sun haɗa da nau'o'i da yawa, irin su Lactobacillus, Streptococcus, da Pediococcus, waɗanda ke da ayyuka daban-daban masu amfani a cikin samar da abinci, abincin dabbobi, da lafiyar ɗan adam.