IJEP 41(3): 250-256 : Vol. 41 Issue. 3 (March 2021)
Karpagam Academy of Higher Education, Department of Biotechnology, Coimbatore – 641 021, India
Salt preservation is the general and old age popular practice. Alternate methods of preservations have been analyzed in order to reduce the pollution load in the soaking process of leather by many researchers. Due to the stringent pollution of total dissolved solids (TDS) and salinity in tannery effluents, there is a need to develop and adopt salt-free curing methods suitable for Indian raw material. Chilling is the most commonly employed short term preservation method in many countries and is considered more efficient and cost-effective than biocides based methods. In the current study, plant derived extract from Lawsonia inermis was used as salt-less formulations for curing goat skins, proving an effective alternative to the conventional preservation with NaCl. The physico-chemical properties of all goat skin were tested and the results met the standard requirements. After treatment with plant extract, the pollution loads of soaking liquors were assessed and there was a dramatic reduction in levels of total solids, total suspended solids (TSS), chloride, total dissolved solids (TDS), biological oxygen demand (BOD) and chemical oxygen demand (COD) released. From the results, it is clear that the proposed preservation technique is completely comparable with the traditional salt curing approaches, which may be used as viable alternative options for skin preservation in leather processing industries.
Sodium chloride, Lawsonia inermis, Goat skin, Antimicrobial, Leather processing
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