Azo dye derivatives of azobenzene constitute the largest group of dyes used in the textile industry and possess recalcitrant chemical groups, such as those of azo and sulphonic acid. Some microorganisms are able to degrade these aromatic compounds. In the present work, decolourisation of culture media containing azo dyes by the ligninolytic fungus Phanerochaete chrysosporium was achieved under ...

five new aromatic poly(amide-imide)s (5a-e) were synthesized by direct polycondensationreaction of n-(4-carboxy phenyl) trimellitimide (3) with five aromatic diamines (4a-e) by usingtriphenyl phosphite in n-methyl-2-pyrrolidone (nmp) and pyridine at solution containingdissolved cacl2. all of the polymers were obtained in quantitative yields with inherentviscosities between 0.29-0.40 dl/g. the r...

Escherichia coli p-aminobenzoate synthase is composed of two nonidentical subunits encoded by pabA and pabB and has been assumed to be the sole enzyme responsible for p-aminobenzoate biosynthesis from chorismate and glutamine. Plasmids were constructed that overproduce the p-aminobenzoate synthase subunits 250-500-fold. Partial purification of the subunits revealed that they form a diffusible i...

We have developed a simplified assay for the enzyme N-acetyltransferase, based upon the loss of fluorescence after acetylation of the substrate p-aminobenzoic acid. This method is sufficiently sensitive to permit the quantitation of N-acetyltransferase activity in 10(5) human lymphocytes. Using this method, we have compared the level of N-acetyltransferase activity in lymphocytes from adult per...

The present paper augments information previously published on the first 25 patients with scrub typhus to receive chloromycetin (1) and reviews our experience in the use of this drug in the treatment of a total of 69 persons who contracted tsutsugamushi disease in the vicinity of Kuala Lumpur, Federation of Malaya. The results obtained in this group are compared with those observed in 19 patien...

Lincomycin (863 units per mg), acetylsalicylic (13, >98%), 3-aminobenzoic (15, 98%), 4-amino-2chlorobenzoic (22, 97%), 4-amino-2-hydroxybenzoic (26, 99%), benzoic (6, >97%), 2-chlorobenzoic (8, 98%), trans-cinnamic (44, 99%), 4-coumaric (43, 98%), 2,3-dichlorobenzoic (40, 97%), 2,5-dichlorobenzoic (36, 97%), 3,4-dichlorobenzoic (31, 99%), 3,4-dihydroxybenzoic (30, 97%), 3,4-dimethoxybenzoic (32...

In the title compound, [Zn(C(17)H(14)Cl(2)N(3)O(3)S)(2)(H(2)O)(2)], the Zn(II) ion has a tetra-hedral coordination formed by the two N atoms of the sulfonamide groups and the two water mol-ecules. Two inter- and two intra-molecular O-H⋯O hydrogen bonds are observed in the crystal structure.