Abstract: A composition for purifying an ozone-containing gas comprising activated carbon, in which the percentage of the volume of pores having a pore diameter of 0.4-0.8 nm in the volume of pores having a pore diameter of 0.4-2.0 nm is 75% or more, and an ozone decomposition catalyst powder is disclosed. Also disclosed is a filter for purifying an ozone-containing exhaust gas comprising activated carbon powder, in which the percentage of the volume of pores having a pore diameter of 0.4-0.8 nm in the volume of pores having a pore diameter of 0.4-2.0 nm is 75% or more, and an ozone decomposition catalyst powder carried on a fiber supporting body. The composition and filter of the present invention can remarkably reduce the content of ozone and volatile organic compounds in ozone-containing exhaust gas from printers.

Abstract: A composition for purifying an ozone-containing gas comprising activated carbon, in which the percentage of the volume of pores having a pore diameter of 0.4-0.8 nm in the volume of pores having a pore diameter of 0.4-2.0 nm is 75% or more, and an ozone decomposition catalyst powder is disclosed. Also disclosed is a filter for purifying an ozone-containing exhaust gas comprising activated carbon powder, in which the percentage of the volume of pores having a pore diameter of 0.4-0.8 nm in the volume of pores having a pore diameter of 0.4-2.0 nm is 75% or more, and an ozone decomposition catalyst powder carried on a fiber supporting body. The composition and filter of the present invention can remarkably reduce the content of ozone and volatile organic compounds in ozone-containing exhaust gas from printers.

Abstract: This invention provides a method for producing Antibiotic T-42082 wherein the method comprises cultivating an Antibiotic T-42082-producing strain of the genus Streptomyces (ATCC 31080) to permit said strain to elaborate and accumulate Antibiotic T-42082 in the resultant broth and harvesting the antibiotic from said broth. This invention also includes the novel antibiotic.

Abstract: D-Ribose is produced by cultivating a strain belonging to the genus Bacillus, which lacks sporulation ability or has high 2-deoxy-D-glucose-oxidizing activity or has both of these two properties and also lacks at least one of transketolase and D-ribulose phosphate 3-epimerase, to cause said strain to elaborate and accumulate a large amount of D-ribose. The thus accumulated D-ribose can be recovered in good yield.

Abstract: A novel aminoglycoside antibiotic, xylostasin, of the nomenclature O-.beta.-D-xylofuranosyl-(1.fwdarw.5)-O-[.alpha.-2,6-diamino-2,6-dideoxy-D -glucopyranosyl-(1.fwdarw.4)]-2-deoxystreptamine and its pharmaceutically acceptable acid salts which are effective against infections with bacteria, and a process for producing the antibiotic by cultivating a strain belonging to the genus Bacillus which is capable of producing the antibiotic.