To extract polyunsaturated fatty acids and to remove cadmium from marine industrial waste like squid-waste-tissues, a microbial treatment of the tissues was examined using a bio-reactor of 200 L. During the sequential and mixed cultivation of proteolytic microbes and some strains of sulfate-reducing bacteria in the homogenized tissues, cadmium was removed significantly from the homogenate as the metal-sulfide precipitate. Characterization of polyunsaturated fatty acids extracted from the tissues are also discussed.特集 : 「環境調和型社会を指向して
