Determination of hydrolytic enzyme capabilities of halophilic archaea isolated from hides and skins and their phenotypic and phylogenetic identification / S. T. Bilgi in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CX, N° 2 (02/2015)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CX, N° 2 (02/2015) . - p. 33-42 Titre : Determination of hydrolytic enzyme capabilities of halophilic archaea isolated from hides and skins and their phenotypic and phylogenetic identification Type de document : texte imprimé Auteurs : S. T. Bilgi, Auteur ; Binnur Meriçli Yapici, Auteur ; Smaïl Karaboz, Auteur Année de publication : 2015 Article en page(s) : p. 33-42 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Bactéries -- Isolement Cuirs et peaux Enzymes protéolytiques Une enzyme protéolytique est une enzyme capable de couper une protéine en plusieurs fragments ou peptides. La trypsine, la papaïne, la pepsine, la chymotrypsine, la plasmine, la subtilisine... sont capables de couper une protéine, chaque enzyme étant spécifique de certains sites particuliers de cette protéine. C'est ainsi, par exemple, qu'une immunoglobuline G est découpée par la papaïne en un fragment Fc et deux fragments Fab, comme l'a montré Porter en 1959. Peaux brutes -- Salage Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : This research aims to isolate extremely halophilic archaea from salted hides, to determine the capacities of their hydrolytic enzymes, and to identify them by using phenotypic and molecular methods. Domestic and imported salted hide and skin samples obtained from eight different sources were used as the research material. 186 extremely halophilic microorganisms were isolated from salted raw hides and skins. Some biochemical, antibiotic sensitivity, pH, NaCl, temperature tolerance and quantitative and qualitative hydrolytic enzyme tests were performed on these isolates. In our study, taking into account the phenotypic findings of the research, 34 of 186 isolates were selected. These isolates were identified by 16S rRNA sequence analysis and 15 different strains of extreme halophilic archaea were identified. 13 strains of these were identified for first time from salted raw hide and skin in our study including Natrialba aegyptia, Halococcus thailandensis, Halococcus dombrowskii, Halovivax asiaticus, Halovivax sp. E107, Haloarchaeon, Natronococcus sp., Halorubrum sp., Halomicrobium zhouii, Natronococcus jeotgali, Haloterrigena thermotolerans, Natrinema versiforme, Halobacterium noricense. At the same time detecting Natrialba aegyptia in 6 of 8 hide samples showed that this strain is widely found in hide and skin samples. Research results are expected to contribute to other studies and solving microbial problems in leather industry. Note de contenu : - RESULTS : Qualitive findings concerning hydrolytic enzyme activities - Quantitative findings concerning hydrolytic enzyme activities - Molecular identification - DISCUSSION : Discussion findings concerning measurement of hydrolytic enzyme activity - Discussion of the finding concerning molecular identification En ligne : https://drive.google.com/file/d/1sR44uFApruPJWE2Pi5Ro2vFbltiwkQGk/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=23198 [article]

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The effect of two anti-fungal compounds on the growth of molds that frequently appear on tanned leather / Binnur Meriçli Yapici in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. XCII, N° 2 (02-03/1997)

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. XCII, N° 2 (02-03/1997) . - p. 38-45 Titre : The effect of two anti-fungal compounds on the growth of molds that frequently appear on tanned leather Type de document : texte imprimé Auteurs : Binnur Meriçli Yapici, Auteur ; Ismail Karaboz, Auteur Année de publication : 1997 Article en page(s) : p. 38-45 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : In this study, two fungicides with different chemical compositions and raw skins from domestic sheep have been used. These raw skins were both pickled (preserved pickled pelts) and chrome-tanned with and without fungicides. Each fungicide was used in the ratios of 0.005 %, 0.015 % and 0.030 %, based on the pelt weight. Two fungicides (one mix phenolic-based and pentachlorophenol-free, the other TCMTB-based) were used to prevent thegroh of mold such as aspergillus niger, aspergillus flavus, penicillium rubrun and alternaria spp. which are troublesome in pickled leathers and chrome-tanned leathers in the leather industry of our country. Minimum inhibitory concentrations of these fungicides were found. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=7685 [article]

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