weissella hellenica weissella hellenica weissella hellenica is a species of gram-positive bacteria, placed within the family of leuconostocaceae. it is frequently isolated from fermented sausage and flounder intestine, as well as korean fermented pickle kimchi and barrels used to make japanese pickles. some strains have been observed to be probiotic while some have not. some strains produce bacteriocins named weissellicins which show antimicrobial activity against other bacteria. weissella hellenica scientific classification domain: bacteria phylum: bacillota class: bacilli order: lactobacillales family: lactobacillaceae genus: weissella species: w. hellenicacollins et al. 1993