Abstract: A substantially odorless, refined fish oil product containing more than 20% eicosapentaenoic acid as the fatty acid residue is provided. The product is produced by a process comprising combinations of steps of winterization of the oil, interesterification of the oil, deodorization procedure of the oil by heating thereof in vacuo with polyhydric alcohol and monoglyceride, and molecular distillation after the deodorization procedure. The product can be used mainly for prevention and therapy of thrombotic maladies by controlling the content of cholesterol in blood in humans.

Abstract: A novel antibiotic designated herein MM 17880 may be obtained from the cultivation of strains of Streptomyces olivaceus and related organisms. In addition to being potent antibacterial agents, MM 17880 and its salts inhibit .beta.-lactamase obtained fromm many organisms so that it shows a synergistic antibacterial effect when combined with .beta.-lactam antibiotics.