Canaigre, rumex hymenosepalus torr. a new viable process for the extraction of canaigre tannis / J. E. Flores Ruiz in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXX (Année 1985)

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. LXXX (Année 1985) . - p. 1-8 Titre : Canaigre, rumex hymenosepalus torr. a new viable process for the extraction of canaigre tannis Type de document : texte imprimé Auteurs : J. E. Flores Ruiz, Auteur ; G. E. Leon, Auteur Année de publication : 1985 Article en page(s) : p. 1-8 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : In order to obtain starch free tanning extracts from canaigre roots, several experiments were conducted at the laboratory level. The results of these experiments were utilized to design the process at the pilot plant level. The tanning extract yield in the laboratory test was 50% containing 70% of tannins. The process used at the laboratory level was also used at the pilot plant level obtaining maximum yields of 47% of extract. In the experimental trials run in the pilot plant it was found that the temperature has a very important effect on the extraction as well as on the quality of the extracts. The other two variables tested, residence time and solvents to solids ratio, did not show any significant effect on the results of the extraction at the experimental levels tested. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9243 [article]

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Novel method for simultaneous extraction of tannin extracts and starches from canaigre roots, Rumex hymenosepalus torr / J. E. Flores Ruiz in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXXI (Année 1986)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. LXXXI (Année 1986) . - p. 389-393 Titre : Novel method for simultaneous extraction of tannin extracts and starches from canaigre roots, Rumex hymenosepalus torr Type de document : texte imprimé Auteurs : J. E. Flores Ruiz, Auteur ; G. E. Leon, Auteur ; S. Cantua, Auteur ; C. Gutierrez, Auteur Année de publication : 1986 Article en page(s) : p. 389-393 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : The process to obtain starch and tanning extracts from Canaigre, Rumex hymenosepalus, consists in getting, through a single procedure, both products simultaneously. The most appropriate parameters to carry out these extractions were: temperature, concentration of sulfur dioxide in the solvent, and the time of contract between the solute and solvent. The results of the simultaneous extractions were measured in terms of the efficiency percentage for both products; analyzing also, the influence of selected variables through experimentation. The temperature and concentration of sulfur dioxide had an important effect only on the obtention of the tanning extract. En ligne : https://drive.google.com/file/d/1jtH_qTfeT1gA8Eh72kp7CjSBWf0QQtf2/view?usp=share [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9242 [article]

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