| 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 fungicides |
| En ligne : |
https://drive.google.com/file/d/1C2R5dgbYzdLrnqj9ujw73PamAMjkZglY/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| 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
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A study of yeasts in chrome tanning and processing in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXIII (Année 1978)
