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, attempt been made extract tannins from Xylocarpus granatum bark using different solvents (e.g., water, methanol, ethanol, chloroform) compare with conventional agents such mimosa quebracho. highest extraction efficiency was observed 31.22% by methanol. presence tannin content polyphenolic compounds, e.g. (-)epicatechin (503 mg/100 g dry extract) , catechin hydrate (218 extract), catechol (29 were ensured UV–Vis, FT-IR spectroscopy HPLC. Again, condensed tannins, moisture content, pH the methanol extracted found 47.80%, 5.82%, 3.97 respectively. tanned showed a shrinkage temperature 86.34 ± 1.52 °C. Other properties tensile strength, tear grain cracking load, distention at comparable vegetable-tanned leather. cross-sectional morphology leathers also characterized scanning electron microscopy (SEM) which revealed compact structure fibers. light findings study, X. could be well new source industry. Graphical