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Auteur Meral Birbir
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Marmara University - Goztepe - Istanbul - Turkiye
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Examination of moderately halophilic bacteria / Meral Birbir in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 105, N° 5 (09-10/2021)
[article]
Titre : Examination of moderately halophilic bacteria Type de document : texte imprimé Auteurs : Meral Birbir, Auteur ; Kubra Kizilkaya, Auteur ; Pinar Caglayan, Auteur Année de publication : 2021 Article en page(s) : p. 231-241 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Bactéries -- Comptage
Bactéries halophiles
Cendres
Cuirs et peaux -- Conservation
Cuirs et peaux -- Microbiologie
Humidité
Peaux brutes -- Salage
pHIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : The salt curing process may cause contamination of skin with micro-organisms found in the salt. Moderately halophilic bacteria are among the dominant halophilic micro-organisms which adversely affect skin quality. Therefore, the study was focused to examine prevalence and total numbers of aerobic bacteria, moderately halophilic bacteria, proteolytic and lipolytic moderately halophilic bacteria in curing salt samples and examine coiony characteristics and biochemical reactions of moderately halophilic bacteria. Twenty-five salt sampies that are used in the preservation of hides and skins were collected from different leather factories in Corlu (20 salt sampies) and Tuzla (5 salt samples) Leather Organized Industrial Zones in Turkey. The pH, ash and moisture values of the salt sampies were respectively determined as between 6.60-7.95, 90%-96%, 2.1%-2.9%. The total numbers of aerobic bacteria, moderately halophilic bacteria, proteolytic and lipolytic moderately halophilic bacteria in the sampies were detected as 2-70 CFU/g, 1-13 CFU/g, 1-13 CFU/g and 1-4 CFU/g, respectively. Ninety-five moderately halophilic bacterial isolates were recovered from the salt sampies. Three, thirteen, seventeen, fifty-six, two, four, five percent of the bacterial colonies were dark yellow, pink, white, cream, beige, dark cream and yellow, respectively. Seventy-nine, sixteen, four and one percent of the bacterial colonies were found as circuiar, punctiform, irregular and rhizoid, respectively. Sixty-six, thirty-four, forty-five and fifty-five percent of the isolates were Gram-positive, Gram-negative, cocci-shaped, and rod-shaped cells. Fifty-four and thirty-eight percent of the isolates were motile and endospore-forming bacteria, respectively. Ail isolates grew on complex agar media containing 3-15% NaCI (w/v) concentration but did not grow on complex agar medium without NaCI and complex agar medium with 30% NaCI. White optimal growth of eighty-two percent of the isolates were observed at Complex agar medium with 10% NaCI, eighteen percent of isolates exhibited optimal growth at Complex agar medium with 10-15% NaCI. All isolates were catalase-positive. Sixty-one, seventy-four, twenty-five, sixty percent of the isolates produced oxidase, protease, lipase, and amylase enzymes, respectively. Thirty-three of percent of the isolates produced ammonia from peptone. ln conclusion, ail salt sampies contained moderately halophilic bacteria, 92% and 48% of salt samples comprised respectively proteolytic and lipolytic moderately halophilic bacteria. Therefore, destructive moderately halophilic bacteria in each salt should be removed using antimicrobial applications before curing process to prevent damage to the salted hides and skins during storage. Note de contenu : - Salt samples
- Determination of pH values, moisture and ash contents of salt samples
- Determination of numbers of aerobic bacteria, moderately halohilic bacteria, proteolytic moderately halophilic bacteria and lipolytic moderately halophilic bacteria in salt samples
- Biochemical ativities of moderately halophilic bacterial isolates
- Table 1 : The pH values, ash contents, moisture content, total counts of aerobic bacteria and moderately halophilic bacteria of the salt samples
- Table 2 : Bacterial colony characteristics of pure moderately halophilic bacterial isolates
- Table 3 : Biochemical test results of moderately halophilic bacterial isolatesEn ligne : https://drive.google.com/file/d/1fiuvgEaAYneIoA1jwQhL4a7iKewvC3nP/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36349
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 105, N° 5 (09-10/2021) . - p. 231-241[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 22978 - Périodique Bibliothèque principale Documentaires Disponible Examination of multidrug-resistant enterobacteriaceae isolated from salted cattle hides and sheep skins / Meral Birbir in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXI, N° 9 (09/2016)
[article]
Titre : Examination of multidrug-resistant enterobacteriaceae isolated from salted cattle hides and sheep skins Type de document : texte imprimé Auteurs : Meral Birbir, Auteur ; K. Ulusoy, Auteur ; Pinar Caglayan, Auteur Année de publication : 2016 Article en page(s) : p. 334-344 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Antibiotiques
Cuirs et peaux -- Microbiologie
Cuirs et peaux de bovins
Cuirs et peaux de moutons
Entérobactériacées
Résistances aux antibiotiques
Tests microbiologiquesIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : Antibiotic resistance profiles in Enterobacteriaceae isolated from salted cattle hides and sheep skin samples were examined in this study. Antibiotic resistance profiles of 27 cattle hide and 28 sheep skin isolates, obtained from five salted cattle hide and five skin samples originating in different countries such as Dubai, Turkey, Israel, Australia, Lebanon, U.S.A. and South Africa, were examined by disc diffussion susceptibility method using 24 different antimicrobial agents. Seventy percent of the salted hide isolates and sixty-eight percent of the salted sheep skin isolates exhibited resistance to three or more of 24 antimicrobial agents used. Less than 50% of the isolates was resistant to tobramycin (13%), cephalothin (16%), tetracycline (16%), amoxycillin-clavulanate (25%), ampicillin-sulbactam (29%), piperacillin-tazobactam (38%), cefoxitin (20%), ceftriaxone (45%), ceftazidime (33%), cefuroxime sodium (45%), trimethoprim-sulfamethoxazole (25%), ampicillin (45%), chloramphenicol (35%) and nalidixic acid (42%). Although 71% of isolates exhibited resistance to aztreonam, all isolates were susceptible to norfloxacin. Resistance to amikacin (5%), streptomycin (9%), kanamycin (9%), gentamicin (5%), imipenem (4%), meropenem (2%), ciprofloxacin (5%) and ofloxacin (2%) was not very common among the isolates. Our research results showed that multidrug-resistant Enterobacteriaceae were common on both salted cattle hide and sheep skin samples. Therefore, we suggest effective antibacterial applications during salt curing of hides and skins to eradicate these multidrug-resistant bacteria in the leather industry. Note de contenu : - Test microorganisms
- Antibiotic susceptibility test
En ligne : https://drive.google.com/file/d/10tAONaxYP7uKDLhC73gWcTwmfYP7uFAk/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=26920
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXI, N° 9 (09/2016) . - p. 334-344[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 18288 - Périodique Bibliothèque principale Documentaires Disponible Examination of salt quality of Sereflikochisar lake used in the turkish leather industry / Meral Birbir in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 86, N° 3 (05-06/2002)
[article]
Titre : Examination of salt quality of Sereflikochisar lake used in the turkish leather industry Type de document : texte imprimé Auteurs : Meral Birbir, Auteur ; N. Kalli, Auteur ; C. Johannson, Auteur Année de publication : 2002 Article en page(s) : p. 112-117 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Antibiotiques
Bactéries -- Identification
Bactéries à gram négatif
Caractérisation
Microbiologie
Sels de sodiumIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : Sereflikoçhisar Salt Lake is one of the largest in Central Turkey. This lake is a major source of salt that is used in preservation of animal hides in the Turkish Leather Industry. Due to the economic importance of the salt obtained from Sereflikoçhisar Salt Lake, preliminary microbial research has been performed and the salt quality of this lake evaluated. The pH of the brine and salt samples was between 7.02 - 7.97. Chemical analyses showed that the brine and salt samples contain sufficient ions, organic substances and hardness to support the growth of extremely halophilic bacteria. Halophilic microorganisms found in Sereflikoçhisar Salt Lake were isolated and at least partially characterised.
The brine taken from Sereflikoçhisar Salt Lake contained 105 colony-forming units/ml of extremely halophilic bacteria. The salt crystals collected from Sereflikoçhisar Salt contained 105 - 107 colony-forming units/g of extremely halophilic bacteria. Colony pigmentation of these samples ranged from a deep blood-red to pale-orange as well as transparent colonies. Eighteen gram negative extremely halophilic aerobic strains were isolated from Sereflikoçhisar Salt Lake. All strains grew in 2.5 - 4.3 M NaCl (15-25% wt/vol) and they grew very well in 25 % (w/v) NaCl containing complex growth media at 39oC and at pH 7.0, they did not grow at a pH of 9-11. When grown under optimum conditions, the cells were pleomorphic rod-shaped and motile. Red pigmentation was also seen in the liquid media containing 25 % (w/v) NaCl.
Most colonies were 1 to 4 mm diameter. The colonies were circular, margins were entire and undulate. Elevation of the strains was convex, raised and pulvinate. Pellicule, ring formation, sediment and cloudy growth of these strains were seen in the liquid media. Most of these strains were found to be susceptible to bacitracin (l0U) and rifampicin 5 μg but resistant to erythromycin (15μg), chloramphenicol (30μg), penicillin G (lOU), gentamicin (l0μg), cefadroxil (30μg), sulfamethoxazole (23.75μg) and trimethoprime 1.25μg), tetracycline (30μg), ciprofloxacin (5μg), amikacin (30mg), novobiocin (5mg), ampicillin (l0mg) and neomycin (30mg). All of the strains showed negative starch hydrolysis, Voges-Proskaeur reactions and DNase activities. All of the strains showed positive methyl red reactions. Most of the strains showed negative indol production and positive gelatin, casein and Tween 80 hydrolysis, arginine dihydrolase, lysine decarboxylase, oxidase and catalase activities. Seven of 18 strains reduced nitrate to nitrite and formed gas from nitrate. D-Glucose, maltose, lactose, sucrose and D-mannitol were used as single carbon sources by some of the strains. Most of the strains have been found to produce acid from glucose. Ten, 7, 4 and 5 of the 18 strains produced acid from maltose, lactose, sucrose and mannitol, respectively.
These studies show that Sereflikochisar Salt Lake contains a viable and diverse bacterial community, Seventeen of the eighteen strains showed positive gelatinase activity. The salt obtained from the lake should not be used directly to preserve hide due to the high number of proteolytic strains it contains.Note de contenu : - MATERIALS AND METHODS : Physico-chemical analyses - Collection of samples and isolation of halophilic bacteria - Morphological, cultural and physiological characteristics - Antibiotic tests - Biochemical tests - Carbohydrate reactions
- RESULTS : Physico-chemical analyses - Microbiological analyses - Cell morphology - Salt tolerance - Antibiotic tests - Biochemical tests - Carbohydrate reactions - Discussion
- Table 1 : The physico-chemical characteristics of the brine and salt crystals samples studied
- Table 2 : Phenotypical features of the 18 extremely halophilic strains studied
- Table 3 : Antibiotic sensitivity of 18 extremely halophilic strains studied strains
- Table 4 : Susceptibility rates of 18 extremely halophilic strains to different antibiotics
- Table 5 : Biochemical characteristics of 18 extremely halophilic strains studied strains
- Table 6 : Acid production from different carbon sources by the extremely halophilc strainsEn ligne : https://drive.google.com/file/d/1Peza4taprLcxIOgHHC_zMrg9KrLQL07c/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39925
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 86, N° 3 (05-06/2002) . - p. 112-117[article]Examination of the fungal community on salt used in Turkish leather industry / Oguz Ozyaral in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 89, N° 6 (11-12/2005)
[article]
Titre : Examination of the fungal community on salt used in Turkish leather industry Type de document : texte imprimé Auteurs : Oguz Ozyaral, Auteur ; Meral Birbir, Auteur Année de publication : 2005 Article en page(s) : p. 237-241 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Champignons microscopiques
Chlorure de sodiumLe chlorure de sodium est un composé chimique de formule NaCl. On l'appelle plus communément sel de table ou de cuisine, ou tout simplement sel dans le langage courant. C'est le principal produit dissous dans l'eau de mer ; on l'appelle alors sel marin.
On l'obtient : dans des marais salants par évaporation de l'eau de mer, dans des mines, par extraction du sel gemme (halite) ou en le synthétisant lors de réactions à hautes températures entre du dichlore (Cl2) et du sodium métallique (Na).
Le chlorure de sodium est utilisé dans l'industrie chimique pour produire du chlore, de la soude caustique et de l’hydrogène.
Contamination fongique
Cuir
Cuirs et peaux -- Industrie -- Turquie
FongicidesIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : Tuz Lake and its salterns Kaldırım and Kayacık are major sources of solar salt for the Turkish hide industry. The fungal community on the salt, which may have detrimental effects if unprocessed salt is used in industrial processes such as in the leather industry, has not been previously investigated. Ten salt crystal and five brine samples were collected from Tuz Lake and its salterns for investigation. A total of 18 species belonging to 10 genera were encountered. Absidia, Acremonium, Eurotium, Aspergillus, Alternaria, Cladosporium, Eupenicillium, Penicillium, Stachybotrys, Trichoderma and Ulocladium species were isolated and identified. The results showed that Tuz Lake and its salterns contained diverse fungal communities. In conclusion the salt should not be used for the preservation of hide without purification because of the fungal contamination. Note de contenu : - Other results for sodium chloride tolerant fungi
- Fungi on leather
- Requirements for fungal growth
- Commercial fungicides
- Table 1 : The physico-chemical characteristics of salt samples and brine samples studied
- Table 2 : Fungal species isolated from Tuz Lake, Kaldrim and Kayacik SalternsEn ligne : https://drive.google.com/file/d/1SD1pa7Ph4ZizwBGGqBVa1T2J-fKkOawl/view?usp=share [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39213
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 89, N° 6 (11-12/2005) . - p. 237-241[article]Extracellular protease activities of extremely halophilic archaea and their control via direct electric current / Meral Birbir in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 92, N° 2 (03-04/2008)
[article]
Titre : Extracellular protease activities of extremely halophilic archaea and their control via direct electric current Type de document : texte imprimé Auteurs : Meral Birbir, Auteur ; Z. B. Ozdogru, Auteur ; Yasar Birbir, Auteur ; Ayse Ogan, Auteur Année de publication : 2008 Article en page(s) : p. 53-58 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Bactéries halophiles
Bain de saumure
Courants continus
Cuirs et peaux -- Conservation
Enzymes protéolytiquesUne 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.
Microbiologie
PeptidasesIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : Proteolytic enzymes which are produced by extremely halophilic Archaea present in salt may cause serious damage on salted hides and may result in significant economic losses in the leather industry. Hence, protease activities of 24 protease producing extremely halophilic archaeal strains isolated from Tuz Lake, Kaldırım and Kayacık salterns and Tuzköy salt mine were determined in this study. The protease activities of Tuz Lake, Kaldırım saltern, Kayacık saltern and Tuzköy salt mine strains were found as between 80.0 and 83.3, 81.1 and 83.8, 83.3 and 83.4, 82.0 and 83.4 Units, respectively. To prevent proteolytic haloarchaeal damage on brine cured hides, the protease producing strains were treated with 0.5A direct electric current for 20min. Although proteolytic strains of Tuz Lake and Tuzköy salt mine in the liquid gelatin media were killed by 0.5A direct electric current within 15min, 10min direct electric current treatment were enough to kill all proteolytic strains of Kaldırım and Kayacık salterns. Also, the effect of 0.5A direct electric current on protease activities of the test strains was examined during 20min treatment in this study. It was found that 0.5A direct electric current caused a slight decrease on protease activities of the test strains. Therefore, it is necessary to kill protease producing strains in brine solution with direct electric current before the excretion of their protease into the brine solution. Note de contenu :
- Extremely halophilic strain
- Protease activities of the extremely halophilic strains
- Inactivation of the test strains with 0.5A direct electric current
- Table 1 : Protease activities of extremely halophilic Archaea isolated from Tuz Lake, Kaldırım and Kayacık Salterns and Tuzköy Salt Mine
- Table 2 : Voltage, temperature and rf values of 4 mixed proteolytic halophilic Archaea inactivated in the liquid gelatin media by 0.5A direct electric current within 20 minutes
- Table 3 : The effect of 0.5A direct electric current on protease activities of some of the test strains during 20 minutes treatmentEn ligne : https://drive.google.com/file/d/1gBbMoBdjmpLA6cnCaGdQjxhmAhOnxKZz/view?usp=share [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38930
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 92, N° 2 (03-04/2008) . - p. 53-58[article]Halophilic bacteria isolated from brine cured cattle hides / Meral Birbir in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 80, N° 3 (05-06/1996)
PermalinkInhibiting lipolytic haloarchaeal damage on brine cured hide with halocin producer strains / Meral Birbir in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 91, N° 2 (03-04/2007)
PermalinkInvestigation of antibiotic-resistant enterobacteriaceae isolated from soaked sheepskins and cattle hides / Meral Birbir in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 103, N° 1 (01-02/2019)
PermalinkInvestigation of moderately halophilic bacteria causing deterioration of the salted sheep and goat skins and their extermination via electric current applications / Pinar Caglayan in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIII, N° 2 (02/2018)
PermalinkIsolation and identification of bacteria adversely affecting hide and leather quality / Meral Birbir in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 80, N° 5 (09-10/1996)
PermalinkMinimal bactericidal concentration for a quaternary ammonium compound used in soak liquors / Canan Veyselova in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 97, N° 4 (07-08/2013)
PermalinkMold strains isolated from unfinished and finished leather goods and shoes / Meral Birbir in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXXIX, N° 1 (01/1994)
PermalinkMolecular identification of moderately halophilic bacteria and extremely halophilic archaea isolated from salted sheep skins containing red and yellow discolorations / C. Akpolat in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CX, N° 7 (07/2015)
PermalinkNegative effects of haloversatile bacteria in salt on skins and their control with direct electric current in the leather industry / Haider Sabah Abdulhusein in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 107, N° 6 (11-12/2023)
PermalinkPrevention of halophilic microbial damage on brine cured hide by extremely halophilic halocin producer strains / Meral Birbir in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 88, N° 3 (05-06/2004)
PermalinkQuarternary ammonium compound as bactericide in hide brine curing and presoaking processes / C. Veyselova in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CVII, N° 10 (10/2012)
PermalinkScreening of bacteriocin production from moderately halophilic skin isolates to inhibit moderately halophilic / Pinar Caglayan in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIII, N° 12 (12/2018)
PermalinkScreening of industrially important enzymes produced by moderately halophilic bacteria isolated from salted sheep skins of diverse origin / Pinar Caglayan in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXII, N° 6 (06/2017)
PermalinkA study of the extremely halophilic microorganisms found on commercially brine-cured cattle hides / David G. Bailey in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXXVIII, N° 8 (08/1993)
PermalinkSynergistic effect of direct and alternating electric current treatments and bronopol to inactivate bacteria found in hide soak liquors / Yasar Birbir in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CVIII, N° 10 (10/2013)
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