This work aims to encapsulate nisin by complexation with exopolysaccharides (EPS), produced by Bacillus tequilensis-GM and Leuconostoc citreum-BMS, namely EPS-GM and EPS-BMS, respectively, using spray-drying technique, and to evaluate the effect of this encapsulation on the structure of nisin. R...

The need for new antibiotic compounds is rising and antimicrobial peptides are excellent candidates to fulfill this object. The bacteriocin subgroup lantibiotics, for example, are active in the nanomolar range and target the membranes of mainly Gram-positive bacteria. They bind to lipid II, inhi...

The rising existence of antimicrobial resistance, confirms the urgent need for new antimicrobial compounds. Lantibiotics are active in a low nanomolar range and represent good compound candidates. The lantibiotic nisin is well studied, thus it is a perfect origin for exploring novel lantibiotics...

Albomycin belongs to the class of sideromycins, compounds composed of iron carriers linked to antibiotic moieties. Albomycin was found to be active against bacteria that have a functional ferric hydroxamate transport system meaning that bacteria will actively transport albomycin until they die. ...

Thianes not containing 4-OH or 4-CO groups are oxidized by wet bromine predominantly to equatorial thiane 1-oxides. The reaction is assumed to proceed by way of an equatorial electrophilic attack by hypobromous acid at the S atom. An electronic interpretation is given of the steric course of ele...

The molecular structure of thiane-1-oxide has been determined by gas-phase electron diffraction. According to the electron diffraction data the molecule has a chair conformation with Cs symmetry. The oxygen atom takes axial position. The following bond distances (rg in Å) and bond angles (deg) w...

The microwave spectrum of thiane has been studied in the 8- to 18-GHz region. Thirty five new rotational lines of the ground vibrational state with J up to 41 have been measured and assigned. These lines and a previous set reported by R. W. Kitchin, T. B. Malloy, Jr., and R. L. Cook [J. Mol. Spe...

The present study reports a DSC study of the sulfur heterocyclic compounds: 2,2’-bithiophene [492-97-7]; 2,5-thiophenedicarboxylic acid [4282-31-9]; 3-acetylthiophene [1468-83-3]; 2-thiopheneacetic acid [1918-77-0]; 3-thiopheneacetic acid [6964-21-2]; 1,4-dithiane sulfone [139408-38-1]; 1,3-oxa...

Electrochemical oxidation of 4-(p-chlorophenyl)thiane in aqueous organic solvents gave selectively the trans-sulfoxide by bromonium ion mediation. A preferential formation of the cis-sulfoxide was attained under acidic electrolyses.

A thermophysical study of thiane sulfone, 1; 1,3-dithiane sulfone, 2; and 1,3-dithiane sulfoxide, 3 in the temperature intervals between T=268 K and their respective melting temperatures has been carried out. The experimental values for the mole fraction, temperature, enthalpy and entropy of fus...

An efficient asymmetric [3+2] annulation reaction with respect to isatin N-Boc ketimines and 1,4-di-thiane-2,5-diol has been achieved by using a chiral tertiary-amine squaramide catalyst, which delivering the spirocyclic 3-aminooxindoles in very good yields (up to 95%) with moderate to good dias...

Spirooxindoles play an important role in drug discovery and development. The development of efficient methods for the synthesis of spirooxindoles from easily available starting materials is of current interest. Herein, we report in detail the In(OTf)3-catalyzed [3 + 3] annulation of spirocyclopr...

Labdane diterpene acids were found to be the major resin acid components in Pinus nigra needles of various seed sources. The major constituents have been identified as 4-epiimbricataloic acid, manoyl oxide 19-oic acid, 4-epicommunic acid, and 15-monomethyl pinifolate. A GC method was developed t...

The principal resin acids of Pinus sylvestris needles are pinifolic acid and its monomethyl ester. Manoyl oxide acid was found to be the major needle resin acid in very few Scots pine trees in Sweden. The structure of manoyl oxide acid was studied by high-field NMR techniques.

The electrochemical oxidation of hematoxylin, as an important biological molecule, was studied using cyclic voltammetry. In this study, the effect of different parameters such as pH, hematoxylin concentration, and time window of the chosen electrochemical method has been used for understanding t...

Clinical biomarker studies are often hindered by the scarcity or suboptimal quality of biological specimens. EdgeSeq, a transcriptomics analysis platform, combines quantitative nuclease protection assay technology with next-generation sequencing, using small amounts of starting material and deli...

A validated simple, reliable and sensitive adsorptive anodic stripping voltammetric procedure is suggested for the accurate determination of antimony(III) on a glassy carbon electrode (GCE) in the presence of hematoxylin (HT), used as a chemical receptor in antimony analysis for the first time. ...

A model fulvic acid (FA) was synthesized from a natural dye, hematoxylin, in a slow oxidative polymerization/condensation reaction catalysed by OH− at pH ca. 12. The resulting dark-brown product, acidified to pH ca. 2, did not precipitate from the reaction solution. It was isolated and purified ...

In the present study, a feather rotating-TENG (FTR-TENG) was developed by analyzing the properties of nanostructure and changes in friction areas by the aerodynamic motion of naturally evolved feathers. The motion and area of surface of the feathers vary according to the interlocking effect of t...

Histological images stained with hematoxylin-eosin are widely used by pathologists for cancer diagnosis. However, these images can have color variations that highly influence the histological image processing techniques. To deal with this potential limitation, normalization methods are useful fo...