ANTIBIOTIC

摘要

The invention relates to a new and useful antibiotic substance which is of the formula I and to processes for its production and recovery. The antibiotic which exhibits ionophoric properties, is classified as a polyether group antibiotic. The antibiotic of formula I is effective in inhibiting the growth of gram positive bacteria and exhibits utility as an antihypertensive agent and as a compound to improve ruminant feed utilization. The antibiotic of Formula I is prepared by cultivating a strain of Streptomyces sp. X-14547 in an aqueous carbohydrate solution containing nitrogenous nutrients and mineral salts and thereafter isolating the antibiotic from the fermentation broth.