The wild-type strain and four DNA repair-deficient strains (uvrA6, uvrB5, recA56, and polA1) of Escherichia coli K-12 were treated with acetic acid, lactic acid, and p-aminobenzoic acid at pH 3.5 during their stationary phase of growth. All three acids were highly toxic to the polymerase-deficient strain. The greater sensitivity of the strain carrying the polA1 gene than its isogenic pol+ deriv...

Fluorescent conjugated polymer, poly(3-aminobenzoic acid), as a new class of fluorescence sensor for detection of trace amounts of water in organic solvents was developed. This sensor exhibits extraordinarily high sensitivity with a detection limit as low as 0.008 wt% for water in DMF.

In defense of: • Glycerine (Page 4) • Cetyl Stearyl Alcohol (Page 5) • Animal Products (Beeswax, Lactic acid & Lanolin in one product each) (Page 5) • Para-aminobenzoic Acid (PABA) (Page 5) • Parabens (Page 6) o Hazardous and Useless Alternatives Exposed (Page 8) Silver Chloride (Page 8) Grapefruit Seed Extract [Adulterated with Benzethonium Chloride & Triclosan] (Page 8) In defense of: • Sodiu...

Abstract Disinfecting activity test of four diphenyltin(IV) benzoate derivative compounds has been carried out. The investigated were diphenyltin (IV) di 4 aminobenzoate (DPDA) ( 2 ), chlorobenzoate (DPDC) 3 di-4-hydroxybenzoate (DPDH) and di-4-nitrobenzoate (DPDN) 5 they prepared by reacting oxide (DPO) 1 ) with benzoic acid derivatives 4-aminobenzoic (4-HABz), 4-chlorobenzoic (4-HCBz), 4-hydr...

Through X-ray absorption and emission spectroscopies, the chemical, electronic and structural properties of organic species in solution can be observed. Near-edge X-ray absorption fine structure (NEXAFS) and resonant inelastic X-ray scattering (RIXS) measurements at the nitrogen K-edge of para-aminobenzoic acid reveal both pH- and solvent-dependent variations in the ionisation potential (IP), 1...

A new pactamycin analogue, 5"-fluoropactamycin, was prepared by directed biosynthesis. Supplementation of the fermentation medium of Streptomyces pactum, var. pactum with 3-amino-5-fluorobenzoic acid, an analogue of 3-aminobenzoic acid, an advanced precursor in pactamycin biosynthesis, resulted in co-production of pactamycin and the new pactamycin analogue. A similar feeding experiment with 3-a...

A comparison of the electrochemical gating of molecular conduction by a redox [Os(bipyridine)(pyridine)Cl] complex tethered to Au(111) with two different metal-molecule junctions in a scanning tunneling microscope nanogap is presented. The same redox molecular structure was tethered by mercaptobenzoic acid or reduction of the aryldiazonium salt of p-aminobenzoic acid, resulting in a Au-S or Au-...

Aged distilled beverages (cognac and brandy) contain phenolic antioxidants as their quality markers. Voltammetric sensors based on the carbon nanotubes electropolymerized pyrocatechol violet (PCV) or p-aminobenzoic acid (ABA) were developed for simultaneous determination of in cognac brandy. The polymerization conditions PCV ABA optimized. Sensors allow sensitive gallic ellagic acids well syrin...

A capillary electrophoresis method was developed for the analysis of oligosaccharides combined with derivatization with 2-aminobenzoic acid. Glycosaminoglycan delta-disaccharides were effectively resolved on a fused-silica capillary tube using 150 mM borate, pH 8.5, as a running electrolyte solution. This analytical method was applied to the identification of glycosaminoglycan in combination wi...