Biocolorant for leather dyeing applications : an eco-benign evaluation of natural coloring agent / C. Kurinjimalar in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVI, N° 9 (09/2021)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXVI, N° 9 (09/2021) . - p. 322-331 Titre : Biocolorant for leather dyeing applications : an eco-benign evaluation of natural coloring agent Type de document : texte imprimé Auteurs : C. Kurinjimalar, Auteur ; Gladstone Christopher Jayakumar, Auteur ; A. Tamil Selvi, Auteur ; Rajangam Venba, Auteur ; Malathy Jawahar, Auteur ; Swarna Vinodh Kanth, Auteur Année de publication : 2021 Article en page(s) : p. 322-331 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Analyse spectrale Caractérisation Colorants végétaux 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 -- Propriétés organoleptiques Cuirs et peaux -- Teinture Extraction (chimie) Garance et constituants Granulométrie Solidité de la couleur Stabilité thermique Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Exploration of biocolorant in leather industry is explored widely owing to its environmental limitation. Besides, employing synthetic dyes in leather process requires high end of pipe treatment due to their complex chemical structure. Therefore, an attempt has been made on exploiting madder root dye (Rubia cordifolia L.) for leather dyeing application. The effect of varying pretreatment regimen on madder colorant extraction, chemical characterizations (including UV-Vis, IR, particle size, zeta potential value, and thermal studies) and optimum operating leather dyeing conditions are studied. The results revealed dissolving medium pH 5, 100oC, and 60 min duration of extraction is optimum. Thus, obtained dye characteristics showed maximum absorption peak at 460 nm, with an average particle size of 166 nm. It also shows a negative zeta potential value of -5.31 which is indicative for dyeing application. The optimum leather dyeing is found at leather pH 5.5, 10% dye concentration and 4 h duration. At optimum dyeing parameters it shows good fastness, perspiration, organoleptic properties without affecting the physical characteristic. Novelty of the present research would lead to develop eco-dyeing method in leather manufacture. Moreover, the study unravels a new application of eco-benign dye to achieve sustainable process. Note de contenu : - Graphical abstract - MATERIALS AND METHODS : Materials - Optimization on madder dye extraction - Preparation and characterization of madder dye - Spectral characteristics - Thermal property analysis - Leather dyeing application and analysis - RESULTS AND DISCUSSION : Optimization on madder dye extraction - Spectral characteristic analysis - Particle size and stability analysis - Thermal stability analysis - Leather dyeing optimization trials - Effect of concentration (Trial 1) - Effect of pH (Trial 2) - Effect of time (Trial 3) - Effect of mordants (Trial 4) - Grain surface analysis - Characterization of dyed leather - Color fastness analysis - Organoleptic properties analysis - Table 1 : Post-tanning procedure for dyeing using madder dye - Table 2 : Color value analysis of crust leather dyed using madder dye - Table 3 : Organoleptic and fastness properties of crust leather dyed using madder dye DOI : https://doi.org/10.34314/jalca.v116i9.4397 En ligne : https://drive.google.com/file/d/1rlk3HayVEXpRVU8p3Wop0diFyOqa6Xfd/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36404 [article]

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Evaluation of antimicrobial activity of Lawsonia Inermis (Henna) against microbial strains isolated from goat skin/leather / A. E. Musa in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CVI, N° 5 (05/2011)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CVI, N° 5 (05/2011) . - p. 170-175 Titre : Evaluation of antimicrobial activity of Lawsonia Inermis (Henna) against microbial strains isolated from goat skin/leather Type de document : texte imprimé Auteurs : A. E. Musa, Auteur ; A. Tamil Selvi, Auteur ; Rathinam Aravindhan, Auteur ; Balaraman Madhan, Auteur ; Aafreen Fathima, Auteur ; Jonnalagadda Raghava Rao, Auteur Année de publication : 2011 Article en page(s) : p. 170-175 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Antimicrobiens Cuirs et peaux -- Conservation Cuirs et peaux de chèvres Henné Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : In the present work, antimicrobial activity of the aqueous extract from leaves of Lawsonia inermis (henna) has been evaluated. Two gram positive and five gram negative bacterial strains isolated from raw goat skins and three fungal species isolated from finished leathers have been utilized for the antimicrobial studies using aqueous extract from henna leaves. Gram-positive bacteria have found to be completely inhibited by henna at concentrations of 650 ppm and gram negative bacteria have been inhibited by henna concentration between 780 to 910 ppm. Growths of all fungal strains isolated have been inhibited by henna extract at a concentration of 1300 ppm. This study clearly demonstrates that henna offers good antimicrobial activity against the bacterial and fungal species. Note de contenu : - MATERIALS AND METHODS : Materials - Preparation of henna extract - Isolation and screening of bacterial strain from goat skin - Bacterial growth in the presence of henna - Isolation and screening of fungal spores - Preparation of spore suspension - Fungal growth in the presence of henna. - RESULTS AND DISCUSSION : Characterization of bacterial isolated from goat skins - Anti-bacterial activity of henna against bacterial species isolated from goat skins - Characterization of fungal species isolated from finished leather - Anti-fungal activity of henna against fungal strains isolated from leather - Effectiveness of henna as an anti-microbial agent. En ligne : https://drive.google.com/file/d/12eMBNHVROCM-K3obroF6CPEhTeG6-uCI/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11591 [article]

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Fungus-resistant fatliquor from blended natural oils - A sustainable lubricating product / Bindia Sahu in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXV, N° 9 (09/2020)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXV, N° 9 (09/2020) . - p. 324-329 Titre : Fungus-resistant fatliquor from blended natural oils - A sustainable lubricating product Type de document : texte imprimé Auteurs : Bindia Sahu, Auteur ; A. Tamil Selvi, Auteur ; Rathinam Aravindhan, Auteur Année de publication : 2020 Article en page(s) : p. 324-329 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Antifongiques Caractérisation Cuirs et peaux -- Propriétés mécaniques Essais dynamiques Formulation (Génie chimique) Huiles et graisses Produits de nourriture du cuir Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Fatliquoring is an important step in making leather. It endows strength and softness to leather by lubricating its fibers. A certain amount of fungicide is also offered during the post tanning operation, to protect the leather from future fungus infection. The aim of this work is to develop a novel fatliquor, which has both lubricating and antifungal activity. Sulfated blended fatliquors were developed by blending 80:20 proportions of castor and rice bran oil respectively and then followed by reaction with Sulphuric acid at 28±2°C. The novel fatliquor was then characterized for particle size which was similar to a control (sulfated castor and sulfated rice bran ouf) fatliquor. Antifungal performance of the novel fatliquor was confirmed by agar well-diffusion process against selected fungus species such as Aspergillus piger, Aspergillus flavus and Aspergillus fumigatus. The resultant leathers were evaluated for physical strength, such as tear strength, tensile strength and lastometer test and the results were found to be similar to control leather. Our study provides additional insights for using such novel fatliquors for both antifungal and lubrication properties. Note de contenu : - MATERIALS AND METHODS : Materials - Methods (Preparation of fatliquor - Characterization of the fatliquor - Antifungal activity of the blended faltiquor - Physical characterization of fatliquored leather) - RESULTS AND DISCUSSION : Stability and particle size analysis of blended mixture - FTIR analysis of product - Antifungal activity of the product - Physical properties of fatliquored leather DOI : https://doi.org/10.34314/jalca.v115i9.3851 En ligne : https://drive.google.com/file/d/18FHAawrnLMwuU6oKvkLW_2kgJ2GOZimD/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34585 [article]

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Phytoremediation of soil using Sesuvium Portulacastrum - Part I / Swarna Vinodh Kanth in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CIV, N° 1 (01/2009)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CIV, N° 1 (01/2009) . - p. 17-24 Titre : Phytoremediation of soil using Sesuvium Portulacastrum - Part I : Removal of Na+ and Cl from tannery wastewater treated soil Type de document : texte imprimé Auteurs : Swarna Vinodh Kanth, Auteur ; R. Rengaswamy, Auteur ; Balachandran Unni Nair, Auteur ; Jonnalagadda Raghava Rao, Auteur ; P. Saravanan, Auteur ; A. Tamil Selvi, Auteur ; P. Ramesh Kannan, Auteur Année de publication : 2009 Article en page(s) : p. 17-24 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Salt tolerant halophyte Sesuvium portulacastrum (S. portulacastrum) is capable of absorbing sodium chloride. In the present study, the feasibility of using S. portulacastrum as a bioaccumulant for NaCl present in tannery wastewater has been studied. The plants were grown in soil fed with tannery wastewater with varying concentrations of NaCl. The growth parameters of the plants such as root and shoot length was studied. The amount of Na+ and Cl- accumulated by the plant in leaves and shoots were estimated. The accumulation of Na+ and Cl- increased with increase in plant density and salt concentration of tannery wastewater. However, it has been found that increase in salt concentration resulted in reduced growth of the plant. It has been observed that 34% of Na+ and 22% of Cl- were absorbed by the plant at a NaCl concentration of 15000 ppm at high plant density conditions. Maximum accumulation of Na+ and Cl- has been observed in leaves compared to stems and shoots. The results of the present work indicate that S. portulacastrum can be used for bioaccumulation of sodium chloride. En ligne : https://drive.google.com/file/d/1-Sp4AQLByGyxpRwvhUU1mRn5vvEB8QKa/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3251 [article]

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Preservation of goatskin using tamarindus indica leaf extract - Green process approach / A. Tamil Selvi in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 99, N° 3 (05-06/2015)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 99, N° 3 (05-06/2015) . - p. 107-114 Titre : Preservation of goatskin using tamarindus indica leaf extract - Green process approach Type de document : texte imprimé Auteurs : A. Tamil Selvi, Auteur ; James Kanagaraj, Auteur ; P. Saravanan, Auteur ; V. Brindha, Auteur ; T. Senthilvelan, Auteur Année de publication : 2015 Article en page(s) : p. 107-114 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cuirs et peaux -- Analyse Cuirs et peaux -- Conservation Cuirs et peaux de chèvres Extraits de plantes:Extraits (pharmacie) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Preservation of animal skin using common salt is widely followed globally and has been in vogue since time immemorial. Salt used for preservation is discharged along with the soak liquor and contributes to 70% of TDS load from leather manufacturing. As an attempt to reduce chloride and TDS, plant based preservation with Tamarindus indica was studied. Different concentrations of salt and Tamarind leaf extract were applied on freshly-flayed goatskins based on its green weight and compared with control (40% salt alone/kg of skin wt.). Sensory evaluation of the preserved skin was done every day (till 21st day) for smell, hair slip and putrefaction. The samples were collected on 1st, 2nd, 3rd, 71h, 14th and 21st day and tests such as moisture content, total nitrogen content, protein content, hydroxyproline content and microbial load for finding out the curing efficiency. Skin those were preserved for 21 days were processed into leather and the leather and properties were examined. The result showed that 15% salt with 15% Tamarindus indica and 10% salt with 15% Tamarindus indica (Test) showed good preservation systems. Note de contenu : - Skin - Plant extract - Minimal inhibitory concentration (MIC) - FT-IR analyses - Preservation experiments - Determination of moisture content - Determination of total extractable nitrogen content - Hydroxyproline estimation - Determination of bacterial count - Pollution load generated in soaking process - Leather making - Physical strength properties of leather - Colour measurement En ligne : https://drive.google.com/file/d/1imFQyIcMmGd4FjqpKyROPTn8IewrIBbE/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24253 [article]

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Recovery, purification and reuse of contaminated sodium chloride obtained from tanneries for raw goat skin preservation / N. Vedaraman in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXI, N° 2 (02/2016)  

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Studies of the application of biocolorant for leather dyeing using Monascus Purpureus / A. Tamil Selvi in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIII, N° 4 (04/2018)  

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Studies on the use of Sesuvium Portulacastrum - Part II / Swarna Vinodh Kanth in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CIV, N° 1 (01/2009)  

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