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Controlling fungal growth on leather : correlation of TCMTB uptake and duration of mold resistance / John M. van Deren in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXIII (Année 1978)
[article]
Titre : Controlling fungal growth on leather : correlation of TCMTB uptake and duration of mold resistance Type de document : texte imprimé Auteurs : John M. van Deren, Auteur ; Edward F. Weiss, Auteur Année de publication : 1978 Article en page(s) : p. 498-507 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Absorption
Champignons microscopiques
Croissance microbienne
Cuirs et peaux -- Conservation
Fongicides
Résistance à la moisissure
Thiocyano-méthylthiobenzotiazoleIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : The compound, 2- (thiocyanomethylthio) benzothiazole (TCMTB) has proven effective for controlling fungal growth on leather. Good protection of the hides requires addition of the fungicide in a manner that assures its maximum transfer to the hide from the liquor to which it is added. Experiments with TCMTB labeled with radioactive carbon-14 showed that uptake of the fungicide by the hides was greatest when the TCMTB was added as soon as practical in the tanning process. When TCMTB was added to the chrome liquor at the beginning of tanning, over 90 percent of it was taken up by the hides, while adding the fungicide three hours af ter the start of tanning reduced the uptake to 77 percent. Exposure of treated hides in a tropical chamber showed that the duration of mold resistance was directly related to TCMTB uptake. Hides containing 100 ppm of TCMTB remained free of any visible fungal growth for over 25 days under these severe conditions. Note de contenu : - Fungal growth on leather
- Controlling fungal growth
- Correlation of TCMTB uptake and mold resistance
- Table 1 : Effect of contact time on TCMTB uptake of hides
- Table 2 : TCMTB uptake by leather vs. time after addition
- Table 3 : Extraction of TCMTB-14C from hide samplesEn ligne : https://drive.google.com/file/d/1giu_jzhyyq-FqdfQqINITk6Vn9iQ_fka/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=41163
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. LXXIII (Année 1978) . - p. 498-507[article]Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 011628 - Périodique Bibliothèque principale Documentaires Exclu du prêt A study of yeasts in chrome tanning and processing / Waldo E. Kallenberger in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXIII (Année 1978)
[article]
Titre : A study of yeasts in chrome tanning and processing Type de document : texte imprimé Auteurs : Waldo E. Kallenberger, Auteur Année de publication : 1978 Article en page(s) : p. 7-21 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Croissance microbienne
Croûte (cuir)On entend par "cuir en croûte" des cuirs ayant subi les opérations jusqu'au tannage, à l'exclusion de toute opération de corroyage ou de finissage, mais qui, par opposition aux wet-blue ont été séchés.
Cuirs et peaux
Fongicides
Levure (Agent de fermentation)
Levures (botanique)
Microbiologie
Tannage au chrome
Wet-blue (tannage)Peau tannée au chrome (le chrome donne une couleur bleue)Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Yeasts have previously been associated with stains and color imper-fections in blue chrome stocks and finished leathers. In this work several yeasts were isolated from chrome tanned crust leathers, wet blue stock, reducing sugars and syrups, and scrapings from tannery drums. Three of these different yeasts were maintained on dextrose, tartaric acid sup-plemented nutrient agar media for study. The primary objective of the study was to establish concentrations at which various fungicidal agents were effective in controlling the growth of the three yeasts. Mold was also introduced into test cultures with the yeasts in order to arrive at a comparative fungicide concentration effective in controlling their growth. In addition to the primary effect of the fungicide type and concentration on the yeasts, a number of other observations about the yeasts were noted during the course of the study. Through sugar assimi¬lation and fermentation tests, three yeasts were classified into their genera, Rhodotorula, Cladosporium, and Torulopsis. Note de contenu : - EXPERIMENTAL MATERIALS AND METHODS : Sources of organisms - Identification methods - Fungicide test methods
- RESULTS OF EXPERIMENTS : Identification of the pink colonies - Identification of black colonies - Identification of white colonies
- RESULTS OF THE FUNGICIDE TESTS
- Table 1 : Fermentation and assimilation test results
- Table 2 : Organism growth and fungicide concentration
- Table 3 : Active ingredients and effective concentration of test fungicidesEn ligne : https://drive.google.com/file/d/1C2R5dgbYzdLrnqj9ujw73PamAMjkZglY/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=41142
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. LXXIII (Année 1978) . - p. 7-21[article]Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 011628 - Périodique Bibliothèque principale Documentaires Exclu du prêt Wet-blue leather microflora and its growth / K. J. Bienkiewicz in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 66 (Année 1982)
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Titre : Wet-blue leather microflora and its growth Type de document : texte imprimé Auteurs : K. J. Bienkiewicz, Auteur ; H. Oberman, Auteur ; K. Malik, Auteur ; B. Sokolowska, Auteur Année de publication : 1982 Article en page(s) : p. 129-133 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Bactéries
Champignons microscopiques
Croissance microbienne
Cuirs et peaux -- Analyse
Cuirs et peaux -- Détérioration
Cuirs et peaux -- Microbiologie
Wet-blue (tannage)Peau tannée au chrome (le chrome donne une couleur bleue)Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Microbiological testing of wet-blues protected with two biocides of different type has shown that moulds, yeasts and bacteria grow on them when non-collagenous organic substances are present. Multiple strains of Trichoderma, Penicillia, Aspergilla, Fusaria, Rhodotorula, Torulopsis, Candida and Pseudomonas were isolated and identified. Leather itself is shown to be an unfavourable nourishing medium for microorganisms. The presence of Pseudomonas bacteria and its significance is discussed. Note de contenu : - Further experiments to estimate the resistance of leather to fungi
- Table 1 : Growth characteristics of microorganisms isolated on samples placed on Czapek-Dox medium (28 days, 30°C, 95% r.h.)
- Table 2 : Evaluation of microorganism growth
- Table 3 : Growth characteristics of test organisms of Czapek-Dow medium according to standard PN-69/C-89080 (28 days, 30°C, 95% r.h.)
- Table 4 : Stress/strain ratio of the mould-infected leathers (IUP/6)En ligne : https://drive.google.com/file/d/1uS-Yardwwz_2357FFT_ZXvsxOx2ukEAd/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34219
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Code-barres Cote Support Localisation Section Disponibilité 007129 - Périodique Bibliothèque principale Documentaires Disponible