Extraction of a novel tanning agent from indigenous plant bark and its application in leather processing
Abstract The use of vegetable tanning materials in leather processing has drawn attention as an alternative to basic chromium sulphate for its natural abundance and environmental aspects. In this work, an attempt has been made to extract vegetable tannins from Xylocarpus granatum bark using differen...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2022-06-01
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| Series: | Journal of Leather Science and Engineering |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s42825-022-00092-5 |
| _version_ | 1811227220461486080 |
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| author | Raju Kumar Das Al Mizan Fatema Tuj Zohra Sobur Ahmed Khondoker Shahin Ahmed Hemayet Hossain |
| author_facet | Raju Kumar Das Al Mizan Fatema Tuj Zohra Sobur Ahmed Khondoker Shahin Ahmed Hemayet Hossain |
| author_sort | Raju Kumar Das |
| collection | DOAJ |
| description | Abstract The use of vegetable tanning materials in leather processing has drawn attention as an alternative to basic chromium sulphate for its natural abundance and environmental aspects. In this work, an attempt has been made to extract vegetable tannins from Xylocarpus granatum bark using different solvents (e.g., water, methanol, ethanol, and chloroform) and compare with conventional vegetable tanning agents such as mimosa and quebracho. The highest extraction efficiency was observed 31.22% by methanol. The presence of tannin content and polyphenolic compounds, e.g. (-)epicatechin (503 mg/100 g dry extract), catechin hydrate (218 mg/100 g dry extract), catechol (29 mg/100 g dry extract) were ensured by UV–Vis, FT-IR spectroscopy and HPLC. Again, condensed tannins, moisture content, and pH of the methanol extracted tannin were found 47.80%, 5.82%, and 3.97 respectively. The leather tanned by Xylocarpus granatum tannin showed a shrinkage temperature of 86.34 ± 1.52 °C. Other properties such as tensile strength, tear strength, grain cracking load, and distention at grain cracking were comparable to conventional vegetable-tanned leather. The cross-sectional morphology of the tanned leathers was also characterized by scanning electron microscopy (SEM) which revealed a compact structure of the leather fibers. In light of the findings from the study, X. granatum bark tannin could be a well alternative to chromium and a new source of vegetable tannin for the leather industry. Graphical Abstract |
| first_indexed | 2024-04-12T09:37:54Z |
| format | Article |
| id | doaj.art-72d2abea79a5486fb0ac860761693999 |
| institution | Directory Open Access Journal |
| issn | 2524-7859 |
| language | English |
| last_indexed | 2024-04-12T09:37:54Z |
| publishDate | 2022-06-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of Leather Science and Engineering |
| spelling | doaj.art-72d2abea79a5486fb0ac8607616939992022-12-22T03:38:10ZengSpringerOpenJournal of Leather Science and Engineering2524-78592022-06-014111510.1186/s42825-022-00092-5Extraction of a novel tanning agent from indigenous plant bark and its application in leather processingRaju Kumar Das0Al Mizan1Fatema Tuj Zohra2Sobur Ahmed3Khondoker Shahin Ahmed4Hemayet Hossain5Institute of Leather Engineering and Technology (ILET), University of DhakaDepartment of Leather Engineering, Khulna University of Engineering &Technology (KUET)Institute of Leather Engineering and Technology (ILET), University of DhakaInstitute of Leather Engineering and Technology (ILET), University of DhakaBCSIR Laboratories, Chemical Research Division, Bangladesh Council of Scientific and Industrial Research (BCSIR)BCSIR Laboratories, Chemical Research Division, Bangladesh Council of Scientific and Industrial Research (BCSIR)Abstract The use of vegetable tanning materials in leather processing has drawn attention as an alternative to basic chromium sulphate for its natural abundance and environmental aspects. In this work, an attempt has been made to extract vegetable tannins from Xylocarpus granatum bark using different solvents (e.g., water, methanol, ethanol, and chloroform) and compare with conventional vegetable tanning agents such as mimosa and quebracho. The highest extraction efficiency was observed 31.22% by methanol. The presence of tannin content and polyphenolic compounds, e.g. (-)epicatechin (503 mg/100 g dry extract), catechin hydrate (218 mg/100 g dry extract), catechol (29 mg/100 g dry extract) were ensured by UV–Vis, FT-IR spectroscopy and HPLC. Again, condensed tannins, moisture content, and pH of the methanol extracted tannin were found 47.80%, 5.82%, and 3.97 respectively. The leather tanned by Xylocarpus granatum tannin showed a shrinkage temperature of 86.34 ± 1.52 °C. Other properties such as tensile strength, tear strength, grain cracking load, and distention at grain cracking were comparable to conventional vegetable-tanned leather. The cross-sectional morphology of the tanned leathers was also characterized by scanning electron microscopy (SEM) which revealed a compact structure of the leather fibers. In light of the findings from the study, X. granatum bark tannin could be a well alternative to chromium and a new source of vegetable tannin for the leather industry. Graphical Abstracthttps://doi.org/10.1186/s42825-022-00092-5Vegetable tanning agentStrength propertiesShrinkage temperatureChrome-free leatherAlternative tanninXylocarpus granatum |
| spellingShingle | Raju Kumar Das Al Mizan Fatema Tuj Zohra Sobur Ahmed Khondoker Shahin Ahmed Hemayet Hossain Extraction of a novel tanning agent from indigenous plant bark and its application in leather processing Journal of Leather Science and Engineering Vegetable tanning agent Strength properties Shrinkage temperature Chrome-free leather Alternative tannin Xylocarpus granatum |
| title | Extraction of a novel tanning agent from indigenous plant bark and its application in leather processing |
| title_full | Extraction of a novel tanning agent from indigenous plant bark and its application in leather processing |
| title_fullStr | Extraction of a novel tanning agent from indigenous plant bark and its application in leather processing |
| title_full_unstemmed | Extraction of a novel tanning agent from indigenous plant bark and its application in leather processing |
| title_short | Extraction of a novel tanning agent from indigenous plant bark and its application in leather processing |
| title_sort | extraction of a novel tanning agent from indigenous plant bark and its application in leather processing |
| topic | Vegetable tanning agent Strength properties Shrinkage temperature Chrome-free leather Alternative tannin Xylocarpus granatum |
| url | https://doi.org/10.1186/s42825-022-00092-5 |
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