Chemical analysis of the characteristics of Tunisian Juglans regia L. fractions: Antibacterial potential, gas chromatography–mass spectroscopy and a full investigation of their dyeing properties

[Display omitted] •Methanolic Tunisian Juglans regia L. fractions were chemically analyzed.•The TPC, TFC and IC50 were determined.•The antibacterial activities of stem against nine pathogenic strains were assessed.•The dyeing properties of the mixture were performed on wool, cotton and polyamide.•Th...

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Bibliographic Details
Published in:Industrial crops and products 2017-12, Vol.108, p.690-699
Main Authors: Jabli, Mahjoub, Sebeia, Nouha, Boulares, Mouna, Faidi, Khaled
Format: Article
Language:English
Subjects:
Antibacterial activity
Color strength
Dyeing
Fastness
Gas chromatography–mass spectroscopy
IC50
Juglans regia L. (walnut)
Mixture
TFC
TPC
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Summary:[Display omitted] •Methanolic Tunisian Juglans regia L. fractions were chemically analyzed.•The TPC, TFC and IC50 were determined.•The antibacterial activities of stem against nine pathogenic strains were assessed.•The dyeing properties of the mixture were performed on wool, cotton and polyamide.•The resulting data from fastness assays exhibited fair fastness grades. The current report deals with the assessment of the characteristics of Tunisian Juglans regia L. (Walnut) fractions. First, prepared stem and leaves methanolic extracts were chemically characterized. The Total Phenolic Contents (TPC), Total Flavanoid Contents (TFC) and the concentration required to scavenge 50% of DPPH* (IC50) were determined. The ability of walnut fractions to quench reactive species was measured through 1,1-diphenyl-1-picrylhydrazyl (DPPH*) radical scavenging activity assay. The highest values of TPC and TFC were achieved using leaves fraction whereas the maximum value of IC50 was reached using stem part. The main constituents of this latter were analyzed using Gas Chromatography–Mass Spectroscopy (GC–MS) and its antibacterial activities against pathogenic strains of Aspergillus Niger, Aeoromonas hydrophila, Pseudomonas Fluorescens, Salmonella arizonae 2, Listeria monocytogenes, Staphylococcus aureus, Salmonella arizonae1, Orchi Epididymite and Escherichia Coli were reported. Results reveal that Aspergillus Niger and Salmonella arizonae 1 are the most sensitive microorganisms exhibiting the largest inhibition zones (18
ISSN:0926-6690
1872-633X
DOI:10.1016/j.indcrop.2017.07.032