alcaligenes viscolactis alcaligenes viscolactis alcaligenes viscolactis is a bacterium which can produce ropiness in milk and which can grow in sun tea. alcaligenes viscolactis scientific classification domain: bacteria phylum: pseudomonadota class: betaproteobacteria order: burkholderiales family: alcaligenaceae genus: alcaligenes binomial name alcaligenes viscolactis