Comparison of Properties of Vegetable Tanned Leather made from Imported Mimosa and Locally Available Tanning Agents

Simple item page
dc.contributor.authorWijethunge, G.P.R.D.
dc.contributor.authorSamaraweera, A.M.
dc.contributor.authorTharangani, R.M.H.
dc.contributor.authorWickramasinghe, W.
dc.date.accessioned2022-02-22T06:42:51Z
dc.date.available2022-02-22T06:42:51Z
dc.date.issued2013
dc.description.abstractLeather is a product produced by skins and hides that have been treated to preserve them and make them suitable for use. Leather is a major by-product of meat industry. In Sri Lanka, buffalo, cow and goat hides are used mainly for leather industry producing leather products such as shoes, bags, belts. There are two methods of tanning used in leather production such as vegetable tanning and mineral tanning. In vegetable tanning, plant extracts are used as tanning agent/ tannin and mimosa, an imported product at a high cost is used. In vegetable tanning process there are two types of tannin as catechole and pyragallol (Reed, 1972). Mimosa and tea waste contain catechole tannin and king coconut contains pyragallol tannin. This study was undertaken to find out the properties of locally available tanning agents as an alternative for leather tanning compared to commercially used mimosa. Methodology This study was carried out at the Ceylon Leather Products PLC, Mattakkuliya. Laboratory analysis was done at CLP and Uva Wellassa University laboratories. Cow and buffalo hides were used separately for the leather tanning process. Three tanning agents, mimosa powder, tea waste extract and extract from king coconut husks were used as treatments with three replicates for each treatment. her production process (tanning, bleaching, fat liquoring, drying and plating) was carried ). Tannin extraction from both tea waste and king coconut husk was done manually. King coconut husk was chopped to get tannin extract and tannin density was increased by boiling. Tea waste was boiled to extract tannin from the waste and increased density using high amount of tea waste. During tanning period density and pH of tanning media were adjusted at four days intervals according to the requirement. Tanning penetration and pH changes of the media was measured. Yield, thickness reduction, water absorption, hardness, shrinking temperature and tensile strength were measured in final leather. The sensory evaluation for softness, fullness and overall acceptability of final leather was done using 10 trained panelists. The sensory data were analyzed using non-parametric procedure, according to the Friedman test using Minitab 16 software. Complete Randomized design was conducted and data from tannin absorption, pH changes and properties of leather were analyzed using analysis of variance (ANOVA) procedure of Minitab 16 software. Tannin absorption was different with treatments. Mimosa has the highest absorption rate both in cow and buffalo hides (Figure 1). However, absorption rate was low compared to other day. But considering tea and king coconut it absorption was low at the beginning and then gone high and again low with the time (Figure 2). That could be due to type of tannin and purity of them.en_US
dc.identifier.urihttp://www.erepo.lib.uwu.ac.lk/bitstream/handle/123456789/8407/51-ANS-Comparison%20of%20Properties%20of%20Vegetable%20Tanned%20Leather%20made%20from%20Imported%20.pdf?sequence=1&isAllowed=y
dc.language.isoenen_US
dc.publisherUva Wellassa University of Sri Lankaen_US
dc.subjectAnimal Sciencesen_US
dc.subjectLeather Producten_US
dc.subjectVeterinary Sciencesen_US
dc.subjectMeat Productionen_US
dc.titleComparison of Properties of Vegetable Tanned Leather made from Imported Mimosa and Locally Available Tanning Agentsen_US
dc.title.alternativeResearch Symposium 2013en_US
dc.typeOtheren_US
Files
Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
51-ANS-Comparison of Properties of Vegetable Tanned Leather made from Imported .pdf
Size:
39.37 KB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Research Symposium-2013