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]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. LXXIII (Année 1978) . - p. 498-507 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-méthylthiobenzotiazole Index. 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 samples En ligne : https://drive.google.com/file/d/1giu_jzhyyq-FqdfQqINITk6Vn9iQ_fka/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=41163 [article]

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Determination of TCMTB and other fungicides in leather / Joaquim Font in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CVI, N° 11 (11/2011)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CVI, N° 11 (11/2011) . - p. 341-348 Titre : Determination of TCMTB and other fungicides in leather Type de document : texte imprimé Auteurs : Joaquim Font, Auteur ; M. Reyes, Auteur ; Sara Cuadros, Auteur ; Anna Bacardit, Auteur ; Agusti Marsal, Auteur Année de publication : 2011 Article en page(s) : p. 341-348 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Antifongiques Cuir Thiocyano-méthylthiobenzotiazole Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : The new ISO 13365:2011 develops a test method for the determination of the content of the preservative agents 2-(thiocyanomethylthio)-benzothiazole (TCMTB), 4-chloro-3-methylphenol (PCMC), 2-phenylphenol (OPP) and 2-Octyl-3(2H)-isothiazolone (OIT) in leather by liquid chromatography. The simultaneous determination of the fungicides TCMTB, PCMC, OPP, OIT, and also 2-mercaptobenzothiazol (MBT) and 3-iodo-2-propynyl-butylcarbamate (IPBC) in leather samples was carried out by liquid chromatography (HPLC) with diode array ultraviolet detection. The sample preparation and extraction step was performed following the new ISO 13365 Standard. The mobile phase was 0.1% formic acid in water (A) : 0.1% formic acid in acetonitrile (B). Gradient: 60% B, 6 min isocratic, then linear to 95% B in 9 min. The chromatographic detection introduced only a minor change with respect to the Standard: a photo diode array detector was used instead of a single wavelength ultraviolet one, thereby improving the reliability of the identifications and the sensitivity of the quantification. It has been ensured that 2,4,6-trichlorophenol (TCP) and pentachlorophenol (PCP) not interfere in the determination. The leather fortifications of 30 and 300 mg/kg yielded average TCMTB recoveries of 94% and 99%, respectively. The recoveries of the other fungicides were similar. The targeted fungicides were determined in 40 samples of commercial leather. Residues of TCMTB were found in 90% of samples. In summary, the new ISO 13365:2011 Standard provides a quick and reliable method not only for the determination of the four molecules that are within the scope of the Standard but also for other fungicides such as IPBC and MBT. Note de contenu : - EXPERIMENTAL : Instrumentation - Materials - Samples - Procedures - RESULTS AND DISCUSSION : Limits of detection and quantification - Linearity, recovery and precision - Selection of wavelength of detection - Analysis of commercial samples En ligne : https://drive.google.com/file/d/19XjQ5s3y5T5kEoC4Y9iPRhX1M6Hvfu-4/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12523 [article]

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Efficient synthesis of chloromethylthiocyanate for use in fungicide production / L. Muthusubramanian in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 87, N° 3 (05-06/2003)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 87, N° 3 (05-06/2003) . - p. 115 Titre : Efficient synthesis of chloromethylthiocyanate for use in fungicide production Type de document : texte imprimé Auteurs : L. Muthusubramanian, Auteur ; R. B. Mitra, Auteur Année de publication : 2003 Article en page(s) : p. 115 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Caractérisation Composés organiques -- Synthèse Cuirs et peaux -- Conservation Fongicides Thiocyano-méthylthiobenzotiazole Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Pentachlorophenol was a standard fungicide used in the leather industry, legislation has now limited the permitted levels and substitute fungicides based on such products as 2-(Thiocyanomethylthio)-benzothiazole (TCMTB) have been introduced. This paper reports the synthesis of chloro methylthiocyanate (CMTC), which is used as an intermediate for synthesis of TCMTB. The compound is characterised by conventional methods, I.R., 1 HNMR and mass spectral data. En ligne : https://drive.google.com/file/d/1dDCBaDXabVMmpYqb-bVqSkM70wH_Gjcm/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39787 [article]

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Monitoring the mode of action of synthetic and natural biocides against Aeromonas hydrophila by Raman spectroscopy and chemometrics / Megha Mehta in JOURNAL OF LEATHER SCIENCE AND ENGINEERING, Vol. 3 (Année 2021)  

[article]  inJOURNAL OF LEATHER SCIENCE AND ENGINEERING > Vol. 3 (Année 2021) . - 15 p. Titre : Monitoring the mode of action of synthetic and natural biocides against Aeromonas hydrophila by Raman spectroscopy and chemometrics Type de document : texte imprimé Auteurs : Megha Mehta, Auteur ; Yang Liu, Auteur ; Mark Waterland, Auteur ; Geoff Holmes, Auteur Année de publication : 2021 Article en page(s) : 15 p. Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Aeromonas hydrophila Analyse multivariée Antimicrobiens Chimiométrie Cuirs et peaux -- Conservation Huile essentielle d'origan Inhibiteurs (chimie) Spectroscopie Raman Thiocyano-méthylthiobenzotiazole Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : We have investigated the mode of action of synthetic biocides, (2-(thiocyanomethylthio) benzothiazole(TCMTB), dichlorophen, (commonly used in leather industry for preservation) and natural biocides, oregano and eucalyptus oils, on Aeromonas hydrophila using Raman spectroscopy in collaboration with multivariate analysis and 2D correlation spectroscopy to evaluate whether Raman spectra acquired contained valuable information to study the action of biocides on bacterial cells. The growth of A. hydrophila in clear and outer edge zone of inhibition differ in their reaction with different biocides, which allows us to highlight the differences as a characteristic of two kinds of bacteria. Such classification helps identify oregano oil as the most effective biocide by altering clear and outer edge zone of bacteria. Standard disk diffusion assay method was used for screening biocide bacteria interactions and later analysed by Raman spectroscopy. The paper also presents the introduction of TCMTB and oregano oil into leather processing stages to examine and determine the antimicrobial effect as an application to real-world setting. Therefore, we conclude that Raman spectroscopy with appropriate computational tools constitutes a powerful approach for screening biocides, which provide solutions to all the industries using biocides including leather industry, considering the potentially harmful effect of biocides to humans and the environment. Note de contenu : - MATERIALS AND METHODS : Biocides and bacteria - Biocides, bacteria and leather treatment - Data acquisition and Raman spectral processing - RESULTS AND DISCUSSION : Disk diffusion agar plate test - Raman spectroscopy identifies biomolecular changes due to biocide treatment - Multivariate analysis - Two-dimensional correlation spectroscopy (2D-COS) - Antimicrobial effect of leather treated with biocides - Table 1 : Disk diffusion determined zones of inhibition (mm) for A. hydrophila strain after treatment with TCMTB, DCP, oregano oil and eucalyptus oil DOI : https://doi.org/10.1186/s42825-021-00062-3 En ligne : https://link.springer.com/content/pdf/10.1186/s42825-021-00062-3.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37546 [article]

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