Phytochemical screening and determination of tannin content of compounds from acacia xanthophloea as viable tanning agents for the leather industry / Michael Cheloti in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 106, N° 5 (09-10/2022)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 106, N° 5 (09-10/2022) . - p. 218-233 Titre : Phytochemical screening and determination of tannin content of compounds from acacia xanthophloea as viable tanning agents for the leather industry Type de document : texte imprimé Auteurs : Michael Cheloti, Auteur ; Wangila Phanice, Auteur ; Kiprop Ambrose, Auteur ; Arthur Onyuka, Auteur ; Derese Solomon, Auteur ; Wekesa Ingrid, Auteur ; Sasia Alvin, Auteur ; Mukavi Justus, Auteur Année de publication : 2022 Article en page(s) : p. 218-233 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Acacia et constituants Agents de tannage Caractérisation Chimie végétale Criblage Phénols Tanins végétaux Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Acacia xanthophloea species, a tropical plant and a member of the Fabacea family is a ubiquitous and native shrub of the Eastern and Southern Africa regions. Although plant species in the Fabacea family are known as a source of tannins, very little is known about their phytochemistry. This study aimed at determining the suitability of Acacia xanthophloea as a viable tanning agent for the leather industry. The crude extract of Acacia xanthophloea was phytochemically screened using a series of qualitative tests while the total phenolic content and tannin content of the Acacia crude extract was determined spectrophotometrically using the Folin-Ciocalteu method. The functional groups of the compounds in the crude extract were determined using FTIR while Scanning Electronic Microscopy (SEM) was used to determine the surface morphological changes that take place during the tanning process. Results of phytochemical screening indicated the presence of: alkaloids, glycosides, flavonoids, phenolic compounds and saponins. Total phenolic content at 249.1mg TAE/g and total tannin content at 39.8mg TAE/g (16%) is reported. The results of this study indicate that the organic extract of Acacia xanthopholea could be a good source of tannins for leather tanning. Note de contenu : - METHODS : Sample collection - Sample preparation and extraction - Phytochemical screening - Total phenolic content - Tannin content - Fourier transform infrared spectroscopy (FTIR) characterisation - SEM analysis - RESULTS AND DISCUSSION : Phytochemical screening - Tannin content (TPC) - FTIR characterisation of the crude extract - Scanning electronic microscope (SEM) analysis - Table 1 : Summary of the test for the phytochemicals, observations and the results - Table 2 : Total phenolic content, total non-tannin content and total tannin content - Table 3 : Shows attributes of FTIR spectra acquired for bark crude extract of Acacia xanthophloea En ligne : https://drive.google.com/file/d/14IkrqSFxaH65b7xkokAtUw1zSBuEyZhf/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38197 [article]

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