Salt free preservation of raw goat skin using swietenia mahogany (seed) extract / Md. Abdur Razzaq in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVII, N° 2 (02/2022)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXVII, N° 2 (02/2022) Titre : Salt free preservation of raw goat skin using swietenia mahogany (seed) extract Type de document : texte imprimé Auteurs : Md. Abdur Razzaq, Auteur ; Murshid Jaman Chowdhury, Auteur ; Md. Tushar Uddin, Auteur Année de publication : 2022 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Acajou et constituants Bactéries -- Comptage Chlorure de sodium -- Suppression ou remplacement 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 -- Conservation Cuirs et peaux -- Propriétés organoleptiques Cuirs et peaux -- Propriétés physiques Cuirs et peaux -- Teneur en azote Cuirs et peaux -- Teneur en humidité Cuirs et peaux de chèvres Extraits de plantes Pollution -- Analyse Température de retrait Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Curing of hides and skins using sodium salt is a well-established and economical preservation technique worldwide. But it contributes to generating a large amount of total dissolved solids (TDS) and increasing the salinity of water during leather processing which is a threat to the environment. The current research is an attempt to preserve goat skin using mahogany (Swietenia mahogany) seed’s extract. In real practice different percentages of mahogany seed extract were applied on raw goat skin and 3% (by weight of skin) of it showed best result. To evaluate the preservation efficiency, related parameters of preservation viz. odor, hair slip, shrinkage temperature, moisture content, bacterial count etc. were monitored regularly for 30 days. The obtained results were compared with conventional salt curing process. The experimental trial showed efficiency in lessening TDS value and chloride content. The preserved goat skins of both trials were treated following conventional leather processing techniques and physical properties were studied. The discussed preservation method exhibited comparable result in every index. Note de contenu : - MATERIAL AND METHOD : Collection of skin - Chemicals - Collection and extraction of mahogany seed - FTIR analysis - Application of extract for curing - Moisture content - Nitrogen content - Bacterial count - Hydrothermal property - Leather making - Pollution load analysis - Physical properties analysis - SEM analysis - RESULTS AND DISCUSSION : Organoleptic properties - FTIR analysis - Moisture content - Nitrogen content - Bacterial count - Shrinkage temperature - Pollution load analysis - Physical properties study - SEM analysis - Table 1 : Organoleptic properties of goat skin preserved with mahogany seed extract - Table 2 : Moisture content (%) of preserved skins - Table 3 : Nitrogen content (gm/kg of sample) of preserved skins - Table 4 : Bacterial count in the preserved skins - Table 5 : Shrinkage temperature (°C) of preserved skins - Table 6 : Pollution load status of soaking liquor - Table 7 : Physical properties of processed crust leather DOI : https://doi.org/10.34314/jalca.v117i2.4727 En ligne : https://drive.google.com/file/d/1QzAVPnrOyLWN0PcOw6q3o1K8JLkOyaFE/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37165 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
23289	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Sky fruit seed crush (SFSC) / Md. Abdur Razzaq in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIX, N° 6 (06/2024)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXIX, N° 6 (06/2024) . - p. 247-254 Titre : Sky fruit seed crush (SFSC) : a potential source of less salt curing of raw goatskin Type de document : texte imprimé Auteurs : Md. Abdur Razzaq, Auteur ; M. Mahfujur Rahman, Auteur ; Md. Motinur Rahman, Auteur ; Md. Salamat Ullah, Auteur Année de publication : 2024 Article en page(s) : p. 247-254 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Chlorure de sodium Le chlorure de sodium est un composé chimique de formule NaCl. On l'appelle plus communément sel de table ou de cuisine, ou tout simplement sel dans le langage courant. C'est le principal produit dissous dans l'eau de mer ; on l'appelle alors sel marin. On l'obtient : dans des marais salants par évaporation de l'eau de mer, dans des mines, par extraction du sel gemme (halite) ou en le synthétisant lors de réactions à hautes températures entre du dichlore (Cl2) et du sodium métallique (Na). Le chlorure de sodium est utilisé dans l'industrie chimique pour produire du chlore, de la soude caustique et de l’hydrogène. Cuirs et peaux -- Conservation Cuirs et peaux -- Séchage Cuirs et peaux de chèvres Peaux brutes -- Salage Produits chimiques -- Consommation -- Réduction Swietenia macrophylla et constituants Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : The curing of raw hides and skins using sodium chloride salt is a widely recognized technique, although it has negative consequences for the environment by elevating water salinity and introducing a significant amount of Total Dissolved Solids (TDS). In order to tackle this issue, goat skin was conserved through the utilization of a mixture consisting of crushed sky fruit seeds and sodium chloride salt. Various ratios of mixtures were applied to raw goat skin to determine an optimal outcome. The most favorable result was achieved by utilizing a blend of 10% seed crush and 10% salt, based on the weight of the raw skin. A control specimen was run with the experimental specimen, and preservation-related variables such as odor, hair loss, shrinkage temperature, moisture level, and bacterial population were evaluated. After preservation, the experimental sample and a control sample were subjected to the standard leather processing technique. The liquor from both samples was analyzed to confirm the impact of the environment on preservation. The experimental trial indicated a 59% decrease in total dissolved solids (TDS) and a 44% reduction in chloride (Cl−) content. The processed leather samples were assessed for their quality through an analysis of their physical properties. Besides, the fiber structures were assessed using a scanning electron microscope (SEM). The comparative evaluation of the physiochemical properties of the introduced preservation showed superb results with the hope of new preservation possibilities. Note de contenu : - MATERIALS AND METHODS : Collection of skin and chemicals - Preparation of SFSC - FTIR analysis - Application of SFSC for curing - Moisture content - Nitrogen content - Bacterial count - Hydrothermal property - Leather making - Pollution load analysis - Physical properties analysis - SEM analysis - RESULTS AND DISCUSSION : FTIR analysis result of SFSC - Organoleptic properties - Moisture content - Nitrogen content - Bacterial count - Shrinkage temperature - Pollution load analysis - Physical properties study - SEM analysis - Table 1 : Percentage of salt and SFSC used for preliminary trials - Table 2 : Organoleptic properties of goat skin preserved in preliminary trial - Table 3 : Bacterial count in the preserved skins observed - Table 4 : Pollution load analysis of soak liquor of preserved goat skin - Table 5 : Physical properties of processed crust leather DOI : https://doi.org/10.34314/3y0dqx25 En ligne : https://drive.google.com/file/d/1Nty_ZVh7LGysvKWMA6wGaWT5lxUYH3AP/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40986 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
24700	-	Périodique	Bibliothèque principale	Documentaires	Sorti jusqu'au 30/09/2024

---

1 (1 - 2 / 2)