The experiments here described indicate that the peptone fractions can alter the different blood elements in such a manner as to affect their immunological reactions. This power is not possessed by all the peptones equally, either qualitatively or quantitatively. If we regard the phenomenon of hemolysis by immune serum in the light of a biochemical process, depending upon properties inherent in...

All tested strains of halophilic archaebacteria of the genera Halobacterium, Haloarcula, Haloferax, and Natronobacterium lysed in 1% Bacto-Peptone (Difco) containing 25% NaCl, whereas no lysis was observed with other strains belonging to archaebacteria of the genera Halococcus, Natronococcus, and Sulfolobus, methanogenic bacteria, and moderately halophilic eubacteria. Substances in Bacto-Pepton...

Characteristics and the use as culture media of protein hydrolysate from Locusta migratoria were determined in comparison with different peptones. After powdering, it was hydrolyzed chemically (acid hydrolysis) obtained product Locust Peptone (LP). The contents protein, fat, nitrogen, ash, minerals, total sugars amino acids LP seen that has both organic inorganic materials enough to a component...

The botanist Vines believed that he was able to separate both peptone-forming and peptone-splitting enzymes from the milky sap of Carica papaya (1). Applying quantitative methods to the hydrocyanic acid activation of papain, Willstatter and Grassmann (2) concluded that papain is a homogeneous enzyme. They assumed that hydrocyanic acid plays the role of a kinase that extends the specificity rang...