A new, precise, and accurate procedure is described for the automated determination of serum alkaline phosphatase on the Robot Chemist. The substrate, p-nitrophenylphosphate in 2-amino-2-methyl-1-propanol, offers the prime advantage of providing directly its own chromogen, p-nitrophenol, following enzyme action. Other advantages are the small sample volumes required and linear reaction rates. C...

Detection of lung cancer biomarkers (LCBs) from exhaled breath in the early stage can lower mortality. We report a highly sensitive dealuminated zeolite Y (DaY)/SnO2 nanoparticle (NP)-based sensor for detection LCBs at low concentrations. The sensing performances were tested with 200 ppb propanol, formaldehyde, and toluene different operating temperatures 175 to 300 °C. was found be efficient p...

Specific enzymic formation of the I)g isomer" of I-amino-2-propanol, a part of the vitamin B12 molecule, has not yet been reported. KRASNA, ROSENBLUM AND SPRINSON z, using growing cultures of Streptomyces griseus, found that L-E15NJthreonine is effectively incorporated into the aminopropanol moiety of vitamin B12 and suggested that the amino alcohol might be formed by decarboxylase activity. A ...

This paper is mainly focusing on the determination of mean molal activity coefficient of HCl in aqueous acidic medium. The present investigations have been carried out to determine the activity coefficients of hydrochloric acid in 2-propanol water mixture solutions under various conditions to study the ion solvent interactions in different temperatures. The standard molar potential Em0 of the c...

Vancomycin-resistant enterococci (VRE) may be spread within a hospital via the contaminated hands of the healthcare worker. Effective hand disinfectants are necessary to break chains of transmission. We determined the bactericidal activity of 1-propanol, chlorhexidine digluconate (0.5 and 4%). Sterillium (45% 2-propanol, 30% 1-propanol and 0.2% mecetronium etilsulphate), Skinsept F (70% 2-propa...

A number of application for enzymes in organic solvents have been developed in chemical processing, food related conversions and analyses. The only unsolved problem related to nonaqueous enzymology is the notion that enzymes in organic solvent are mostly far less active than in water. Therefore, studies concerning the mechanisms by which enzymes are inactivated by organic solvents would reveal ...

The present work concerns with an investigation on the solubility of cis,cis-muconic acid dissolution in different polar solvents by characterizing and modeling the dissolution as a function of temperature. Water, ethanol, 2-propanol and acetic acid have been investigated as solvents in the range temperatures from a 298.15 to 348.15 K. Owing to the absence of cis,cis-muconic acid solubility...