Development of sustainable strategies for leather waste management through bacterial remediation / A. Sindhuja in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXV, N° 12 (12/2020)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXV, N° 12 (12/2020) . - p. 454-458 Titre : Development of sustainable strategies for leather waste management through bacterial remediation Type de document : texte imprimé Auteurs : A. Sindhuja, Auteur ; C. Kurinjimalar, Auteur ; Gladstone Christopher Jayakumar, Auteur ; Arjunan Yasothai, Auteur ; Swarna Vinodh Kanth, Auteur Année de publication : 2020 Article en page(s) : p. 454-458 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Bactéries Biodégradation Caractérisation Cuir -- Déchets Cuirs et peaux -- Détérioration Enzymes microbiennes Hydroxyproline Peptidases Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : A new Bacillus species has been isolated and used for treating chrome leather wastes. The activity of Bacillus species is evaluated for the degradability of the Chrome Leather Waste (CLW). An initial CLW substrate concentration at 0.5 and 1%, along with the bacterial strain is studied against the control sample without bacterial strain. The higher proteolytic enzyme production and hydroxyproline release in the CLW containing medium confirms the degradation process, whereas it is significantly less in control samples. The degradation profile of CLW shows higher in 1% CLW as compared to 0.5% CLW. In 1% CLW, the protease activity of the isolated strain has been increased from 1.615 to 5.625 U/mL. In addition to protease activity, the isolated strain also expressed chromate reductase activity. Furthermore, FTIR, TGA, and SEM studies confirm the degradation of leather wastes. Note de contenu : - EXPERIMENTAL : Characterization of bacterial species - Evaluation of bacterial strain on chrome leather wases - ATR-FTIR of the chrome shavings - TGA of the chrome shavings - Microscope evaluation - Results and discussion - Fig. 1 : Phylogenetic tree of strain MG995009 - Fig. 2 : FT-IR spectra for treated and untreated samples, magnified image of chances in wave numbers of treated and untreated samples - Fig. 3 : Thermogravimetric analysis of treated and untreated CLW - Fig. 4 : SEM images of treated and untreated CLW of control and 0,5% - Table 1 : Release of protease during the degradation process of CLW - Table 2 : Release of hydroxyproline during the degradation process of CLW DOI : https://doi.org/10.34314/jalca.v115i12.4204 En ligne : https://drive.google.com/file/d/1ZyKTaiUdWrV-bpvWHu6TqCKAsLXwDUbR/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34998 [article]

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