Withdrawal Notice: C-Methylation Of Organic Substrates: A Comprehensive Overview. Part II. Methanol As Methylating Agent. A Case Of Catalysis Versatility.

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Migration of plasticizers from poly(vinyl chloride) and multilayer infusion bags using selective extraction and GC-MS.

Flexible poly(vinyl chloride) (PVC) is widely used in the pharmaceutical industry for the manufacture of medical devices (tubes, probes, bags, primary packaging, etc.). The objective of the present study was to develop a procedure to evaluate the migration potential of nine plastic additives in aqueous infusion bags (NaCl 0.

Antioxidant and Biological Activities of Proteinaceous Extract from Algerian Glycine max Plant.

Objective: Glycine max is commonly used in Algeria for treatment of anemia deficiency and osteoporosis, it ranks first in terms of vegetal proteins. The experiment was aimed at characterizing the proteinaceous Glycine max extract and evaluating its antioxidant, biological and hematological potential.

Methodology: Extraction of proteinaceous materials from Glycine max plant was undertaken using water and n-hexane as extracting media.

Microemulsion breakdown by pervaporation technique: effect of the alkyl chain length of n-alkanol, a cosurfactant of the microemulsion.

Two sets of microemulsions, cyclohexane- and water-rich ones, were prepared with the following n-alkanols as cosurfactants: n-propanol, n-butanol, n-pentanol, and n-hexanol. The results showed the influence of the alkyl chain length of the n-alkanol on the permselectivity properties of the pervaporation technique in the breakdown of the microemulsions. The variations of the total flux rate J and the enrichment factor beta were in parallel with the effect of the cosurfactant on the swelling extent of the PDMS membrane.

Use of inverse gas chromatography to account for the pervaporation performance in monitoring the oxidation of primary alcohols.

The oxidation of n-propanol and n-butanol to their corresponding aldehydes was monitored by the pervaporation technique. Mass transfer phenomenon that occurs in the pervaporation process was confirmed by the results of inverse gas chromatography. Polydimethylsiloxane (PDMS), a hydrophobic polymer widely employed as a membrane in pervaporation technique, was evaluated as a stationary phase in this study.

Use of inverse gas chromatography to account for the pervaporation performance in the microemulsion breakdown.

Mass transfer phenomenon that occurs in the pervaporation process when applied to the microemulsion breakdown, was confirmed by the results of inverse gas chromatography. The stationary phase for this study was polydimethylsiloxane (PDMS), a hydrophobic polymer employed as a membrane in the pervaporation technique. The retention times of the different molecule probes (toluene, cyclohexane, and n-butanol) gave an insight into the extent of the interactions between each of these molecules and the stationary phase; these molecules were the components of the two microemulsions in study.

Use of reverse transcriptase-polymerase chain reaction (RT-PCR) and dot-blot hybridisation for the detection and identification of African horse sickness virus nucleic acids.

A coupled reverse transcriptase-polymerase chain reaction assay (RT-PCR) for the detection of African horse sickness virus (AHSV) dsRNA, has been developed using genome segment 7 as the target template for primers. RNA from isolates of all nine AHSV serotypes were readily detected. The potential inhibitory effects of either ethylene diamine tetra acetic acid (EDTA) or heparin on the RT-PCR were eliminated by washing blood samples before lysis of the red blood cells and storage.

Molecular epidemiology of African horse sickness virus based on analyses and comparisons of genome segments 7 and 10.

This paper describes a method to rapidly identify African horse sickness virus (AHSV), using a single tube reverse transcription polymerase chain reaction (PCR). This method was used to amplify cDNA copies of genome segments 7 and 10 from several different AHSV strains, of different serotypes, which were then analysed by sequencing and/or endonuclease digestion. AHSV VP7 (encoded by genome segment 7) is one of the two major capsid proteins of the inner capsid layer, forming the outer surface of the core particle.

Detection of African horse sickness virus in the blood of experimentally infected horses: comparison of virus isolation and a PCR assay.

A reverse transcription-polymerase chain reaction (RT-PCR) assay followed by dot-blot hybridisation was used to detect African horse sickness virus (AHSV); the primers employed amplified the S7 gene that encodes the VP7 protein. The RT-PCR assay was compared with virus isolation for detecting AHSV in blood samples form horses experimentally infected with AHSV-4 and AHSV-9. The influence of sample storage and transportation and the effects of two anticoagulants (EDTA and heparin) were also studied.

Nucleotide sequence comparison of the segments S10 of the nine African horsesickness virus serotypes.

Segments 10 (S10) of the double-stranded RNA (ds RNA) genomes from African horsesickness virus (AHSV) serotypes 2, 4, 5, 6 and 7 were cloned and sequenced. Direct sequencing of previously reverse transcribed amplified (RT)-PCR segments S10 was also performed. Nucleotide sequences of two strains (the virulent Moroccan strain and a vaccine strain) of the same serotype (4) were determined.

Differentiation of African horse sickness viruses by polymerase chain reaction and segments 10 restriction patterns.

This paper describes a single tube reverse transcription-polymerase chain reaction (RT-PCR) method for detection of African horse sickness virus (AHSV). The genomic segments 10 of viruses of the 9 AHSV serotypes were amplified. The 758bp products were digested to completion by restriction enzymes.

Detection of African horse sickness viruses by dot-blot hybridization using a digoxigenin-labelled probe.

In order to develop a non-radioactive dot-blot hybridization assay, for the detection of African-horse sickness virus (AHSV), genome segment 7 from 9 serotypes was amplified by RT-PCR. The resulting PCR products were denatured, immobilized on nylon membranes and then hybridized to a non-radioactive digoxigenin-labelled probe. This probe (265 bp in length) was generated by nested-PCR using genome segment 7 of AHSV, serotype 4 as a template.

Application of the polymerase chain reaction to the detection of African horse sickness viruses.

The development of a coupled reverse transcriptase-polymerase chain reaction assay (RT-PCR) is described for the detection of African horse sickness virus (AHSV) double-stranded RNA. Genome segments 7 and 10 were chosen as target templates for primers selected for use in the RT-PCR. Using these AHSV-specific primers all 9 serotypes were detectable.

Diagnosis of the African horse sickness virus serotype 4 by a one-tube, one manipulation RT-PCR reaction from infected organs.

A single tube reverse transcription-polymerase chain reaction (RT-PCR) method for detection of African horse sickness virus (AHSV) in splenic tissues from infected horses is described. Double stranded RNA was extracted from infected organs of horses and used to produce complementary DNA (cDNA) with the two primers selected for the PCR. The 1179 bp amplified product (the segment 7 which encodes for VP 7), detected by electrophoresis on agarose gel and ethidium bromide staining, was hydrolysed with eight restriction endonucleases for characterization of the AHSV.

Diagnosis and molecular epidemiology of the African horse sickness virus by the polymerase chain reaction and restriction patterns.

African horse sickness is a viral disease caused by an orbivirus belonging to the Reoviridae family. This paper describes a polymerase chain reaction (PCR) for amplifying segments 7, which encode for VP 7, a protein common to the 9 known serotypes of this virus. A reverse transcription step is necessary before amplification.