overcome. Sulfanilamide, sulfathiazole, sulfadiazene, and sulfapyridine were measured by the method of Bratton and Marshall (2), using a photoelectric colorimeter.2 Substrates and ultrafiltrates of serum were obtained according to Lavietes' method (3). It had been established previously that contact with mercury did not affect the determination of sulfonamide compounds in serum. The effects of ...

samples were thus obtained for subsequent anaerobic assay with P. cereviseae. Typical assay results are indicated in Fig. 2. There is a marked increase in P. cereviseae activity caused by incubation of C. sporogenes with folic acid as compared with the corresponding nonincubated system. This activity could not be attributed to endogenous cell activity, and was not due to the utilization of aryl...

Sebastián Bellú y Marcela Rizzotto* Area Inorgánica, Universidad Nacional de Rosario, Suipacha 531, 2000 Rosario, Argentina Nora Okulik Facultad de Agroindustrias, Universidad Nacional del Nordeste, Cte. Fernández 755 (3700) Presidencia Roque Sáenz Peña, Chaco, Argentina Alicia Jubert Departamento de Química, Facultad de Ciencias Exactas 47 y 115 y Facultad de Ingeniería 1 y 47, Universidad Nac...

In this study, the degradation of sulfonamide antibiotics was investigated through persulfate-enhanced UV advanced oxidation process. Factors that may affect efficiency were analyzed. Results showed persulfate imposed a significant enhancement on process during sulfathiazole degradation. The combined UV/persulfate can effectively remove about 96% within 60 min. With increase in dosage persulfat...

(Received: September 16, 1952) In our previous report (1), it was pointed out that the amount of free amino acids in the bacterial cell of sulfathiazol-resistant dysentery strain not only differed from that of sensitive one, but also varied depending upon the presence or absence of sulfathiazol in the culture medium. Attempts have been made to see if there is the similar relation in case of str...

Since the early observations of Kellner (1936) and Fuller (1937), who demonstrated that p-aminobenzenesulfonamide (sulfanilamide) is formed in animal tissues when prontosill or prontosil soluble2 (neoprontosil3) is administered by mouth, and the studies by Domagk (1935), Colebrook and Kenney (1936), and Colebrook, Buttle, and O'Meara (1936), wherein they were unable to demonstrate an antibacter...