| Titre : |
Evaluation of potential application for sunt pod extracts (Acacia nilotica) in leather tanning |
| Type de document : |
texte imprimé |
| Auteurs : |
A. I. Nasr, Auteur ; Hardy Mueller, Auteur ; M. M. Abdelsalam, Auteur ; A. H. Azzam, Auteur ; C. Jungandreas, Auteur ; W. Poppitz, Auteur |
| Année de publication : |
2017 |
| Article en page(s) : |
p. 23-32 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Acacia et constituants
Additifs
Analyse spectrale
Colorimétrie
Cuirs et peaux de moutons
Extraction (chimie)
Phénols
Tanins végétaux
Tannage végétal -- Analyse
Viscosité
|
| Index. décimale : |
675.2 Préparation du cuir naturel. Tannage |
| Résumé : |
The current investigation was carried out to evaluate the efficiency of using sunt, Acacia nilotica, pods extract in leather tanning. Skins from 16 Barki rams aged 12-18 months were cured and prepared for tanning using sunt pod extract. The sunt pods were collected and dried at 25°C for 5 days. Thereafter, the dried pods were ground by a 0.3 mm fineness grinder and were further subjected to the extraction procedure. Three chemical additives, namely NaOH, Na2SO3 and Na2CO3 were used for the extraction at 70 and 90°C. The influences of both types of chemical additive and extraction temperature on extraction yield were determined. The extract characteristics in terms of stiasny number, hide powder, tannins, non-tannins and total phenol contents were also analyzed. The results showed that increasing extraction temperature increased (P<0.05) extraction yield and improved the quality of the extract regardless of chemical additive type. Meanwhile, the extraction using either Na2SO3 in aqueous solution or by water at 90°C yielded the best extract characteristics. The elevated concentrations of condensed and hydrolysable tannins obtained in our results point to the possibility of utilizing sunt pod extract in tanning or re-tanning of leather rather than using traditional tanning reagents. |
| Note de contenu : |
- EXPERIMENTAL : Raw material - Extraction procedure and experimental design - Total phenol and tannins content - Hide powder test - Stiasny number - Fourier Transform Infrared Spectrometry (FTIR) - Mass spectrometry (MS) - Determination of viscosity - Vis-spectroscopy and color measurement - Tanning procedure - Determination of leather
- RESULTS AND DISCUSSION : Extracts quality determination - Leather properties |
| En ligne : |
https://drive.google.com/file/d/1hA-XvIKsJlNx9HrDZywbDOC-wlmhhObt/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27566 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXII, N° 1 (01/2017) . - p. 23-32
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