Design of leather footwear for diabetics containing chlorhexidine digluconate microparticles / Fatih Yalcin in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXV, N° 3 (03/2020)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXV, N° 3 (03/2020) . - p. 79-86 Titre : Design of leather footwear for diabetics containing chlorhexidine digluconate microparticles Type de document : texte imprimé Auteurs : Fatih Yalcin, Auteur ; Huseyin Ata Karavana, Auteur ; Seda Rencber, Auteur ; Sinem Yaprak Karavana, Auteur Année de publication : 2020 Article en page(s) : p. 79-86 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Antiseptiques Caractérisation Chaussures -- Conception et construction Cuir Diabète Digluconate de chlorhexidine Encapsulation Ethylcellulose Formulation (Génie chimique) Matériaux -- Imprégnation Microbiologie Particules (matières) Pieds -- Soins et hygiène Système de libération contrôlée (technologie) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : ChlorHexidine Digluconate [CHD] was encapsulated inside an ethylcellulose shell material [Aquacoat ECD], and then spray dried to produce mixed microparticles (MPs). The validity and functional quality of the resultant [CHD-MPs] were analyzed on vamp and lining leather which are used to manufacture shoes for diabetics. The morphology, efficiency of encapsulation and in vitro release characteristics of the [CHD-MPs] were optimized in order to impregnate [CHD-MPs] onto leather footwear for diabetics. Scanning electron microscopy (SEM) was used to characterize the [CHD-MPs] and the leathers treated with it. SEM images illustrated that the [CHD-MPs] were spherical, smooth in shape and adhered well to leather. In vitro CHD-release studies from its MPs, and for leather treated with it were performed in phosphate buffer saline at pH =7.2. There was an inherently controlled release behaviour of CHD for all the formulations on leather. Finally, microbiologic studies on leather treated with [CHD-MPs] were done. This study suggested that footwear containing [CHD- MPs] is/will improve the quality of daily life for diabetics. Note de contenu : - EXPERIMENTAL : Materials - METHODS : Prepration of MPs - Particle morphology of the MPs - Conditions of Ultra-Performance Liquid Chromatography (UPLC) - Encapsulation efficiency of the MPs - FT-IR analysis - In vitro drug release of the MPs - Application of the MPs on the leathers - Scanning Electron Microscopy (SEM) of the leathers with the MPs - In vitro drug release of the leathers with MPs - Microbiologic studies on leathers with MPs - RESULTS AND DISCUSSION : Particle morphology - UPLC conditions - Encapsulation efficiency - Fourier Transform Infrared Spectroscopy (FT-IR) - In vitro drug release of the MPs - SEM of the leathers with the MPs - In vitro drug release of the leathers impregnated with MPs - Microbiologic studies on leathers with MPs DOI : https://doi.org/10.34314/jalca.v115i03.1625 En ligne : https://drive.google.com/file/d/1bMgMmBeb608l3LTX7OTST1S0mMdLW9-K/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33885 [article]

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Importance of using genuine leather in shoe production in terms of foot comfort / Behzat Oral Bitlisli in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 89, N° 3 (05-06/2005)

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 89, N° 3 (05-06/2005) . - p. 107-110 Titre : Importance of using genuine leather in shoe production in terms of foot comfort Type de document : texte imprimé Auteurs : Behzat Oral Bitlisli, Auteur ; Huseyin Ata Karavana, Auteur ; Bahri Basaran, Auteur ; A. Aslan, Auteur Année de publication : 2005 Article en page(s) : p. 107-110 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Chaussures Chaussures -- Matériaux Confort Essais (technologie) Humidité -- Absorption Perméabilité Transpiration Vapeur d'eau Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : In this study, 1200 pairs of work shoes were examined that had caused complaints by users due to dampness resulting from perspiration in the shoes. It was determined that the upper leather was box calf, the lining was a polyether urethane-based synthetic textile product having a non-woven structure and the insole was a polymeric material of an ethylene- propylene diene rubber (EPDM)-based foam structure. It was also found that the water vapour permeability and water absorption properties of the synthetic insole used in the manufacturing of the work shoes were quite low. It was concluded that this prevented absorption of wetness formed inside the shoe and transfer of the damp to the air outside, and negatively affected foot comfort, causing user complaints. Note de contenu : - MATERIALS : Investigation - RESULTS AND DISCUSSION : Materials used in the manufacture of the shoes - Water vapour permeability - Water absorption - Table 1 : Typical IR absorption bands of lining - Table 2 : Typical IR absorption bands of insole - Table 3 : Results of water vapour permeability (WVP) tests of shoe materials - Table 4 : Results of static absorption of water (SAW) tests of shoe materials Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39269 [article]

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A study on cost accounting in garment leather manufacturing / E. Yigit in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 90, N° 2 (03-04/2006)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 90, N° 2 (03-04/2006) . - p. 68-72 Titre : A study on cost accounting in garment leather manufacturing Type de document : texte imprimé Auteurs : E. Yigit, Auteur ; B. O. Bitlisli, Auteur ; E. Teker, Auteur ; Bahri Basaran, Auteur ; Huseyin Ata Karavana, Auteur Année de publication : 2006 Article en page(s) : p. 68-72 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Comptabilité analytique Coût de production Vêtements en cuir Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : In this study, actual annual production figures of a tannery processing sheepskins for garments in the Menemen Organized Leather Industrial Region of Izmir, Turkey were examined so as to establish production costs and determine unit costs. A cost distribution table was formed using the actual figures obtained from the tannery and units costs were then determined. It was found that total actual costs comprised 66.1% skins, 19.6% chemical substances, 5.4% labour and 6.03% general production expenses. Note de contenu : - Cost items - Material costs - Labour Costs - General Production Costs - Distribution of Unit Costs and General Expenses - Country-wise variations in costs - Table 1 : Cost distribution (US$) - Table 2 : Ratios of material expenses - Table 3 : Ratios of labour expenses - Table 4 : Ratios of general production expenses En ligne : https://drive.google.com/file/d/1X4F7w4Hg_OZLCLb2tk_wkSRj-ZehusoG/view?usp=share [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39159 [article]

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The effect of conservation defects on the Suede quality of double-face / Behzat Oral Bitlisli in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. XCIX, N° 12 (12/2004)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. XCIX, N° 12 (12/2004) . - p. 494-501 Titre : The effect of conservation defects on the Suede quality of double-face Type de document : texte imprimé Auteurs : Behzat Oral Bitlisli, Auteur ; Meral Birbir, Auteur ; I. Yasa, Auteur ; O. Sari, Auteur ; Bahri Basaran, Auteur ; Huseyin Ata Karavana, Auteur Année de publication : 2004 Article en page(s) : p. 494-501 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : In this research, the effects of microorganisms on suede quality of double-face leather were examined. The bacterial numbers on salted sheepskin samples were found as 1.8x106-4.3x107 cfu/g on solid medium and 1.9x106-4.7x107 cfu/g on halophile medium containing 10-30% NaCl. However it was found that salted sheepskins contained 4.4x101-2.0x104 cfu/g of fungi. While 53-74% of halophilic bacteria and 39-58% of fungi showed proteolytic activity, 47-62% of halophilic bacteria and 35-54% of fungi showed lipolytic activity. It was observed that defective light stained areas on suede surface of finished double-face leathers were caused by microorganisms on salted sheepskins and that these defects correspond to 35% of the total double-face leathers amount. Consequently, it was decided that the proteolytic and lipolytic activities of microorganisms on the flesh side of the sheepskins decreased the suede quality and caused economical losses. En ligne : https://drive.google.com/file/d/1uj7Rf4HbcbOesDGVa6fnGsFnkFOBGtJs/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4238 [article]

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Utilization of collagen hydrolysate in keratinase production from bacillus subtilis ATCC 6633 / Ahmet Aslan in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CII, N° 4 (04/2007)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CII, N° 4 (04/2007) . - p. 129-134 Titre : Utilization of collagen hydrolysate in keratinase production from bacillus subtilis ATCC 6633 Type de document : texte imprimé Auteurs : Ahmet Aslan, Auteur ; Huseyin Ata Karavana, Auteur ; G. Gulumser, Auteur ; I. Yasa, Auteur ; B. H. Cadirci, Auteur Année de publication : 2007 Article en page(s) : p. 129-134 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : In this study, chrome shavings from tanning industry were hydrolyzed with a commercial protease in alkali medium. Some chemical analyses were made and amino acid composition of collagen hydrolysate obtained from chrome shavings determined. This collagen hydrolysate was used for the production of keratinase from Bacillus subtilis ATCC 6633 as a carbon and nitrogen source. The culture grew in fermentation medium containing various proportion of collagen hydrolysate (1-5% w/v) at pH 7.0 and pH 10.0 with agitation rate of 200 rpm. The best keratinase production was obtained from the medium containing 1% hydrolysate (w/v) at pH 7.0 for 36 hours and with 3% hydrolysate (w/v) at pH 10.0 for 24 hours. En ligne : https://drive.google.com/file/d/1fF1_2B0896goPd5Blqsss2iwmxQUJdnn/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3361 [article]

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