Antimicrobial kinetic activities of lignin from sugarcane bagasse for textile product

Lignin from sugarcane bagasse was extracted using an alkali treatment process. The lignin extracts was coated on fabric to be used as potential additional fabric in a sanitary mask. The antimicrobial activities of lignin extracts and from fabric with coated lignin extracts were evaluated using a broth dilution method and time kill analysis assay against Gram positive Staphylococcus epidermidis (DMST 15505). The MIC and MBC values of the lignin extracts were 4096 μg/ml and 8192 μg/ml, respectively. Fabric with 16 cm2 surface area coated with lignin extracts equivalent to one-fold of MBC could prevent further bacterial formation. At a concentration of two-fold and above, the coated fabric achieved a bactericidal level within 12 h of analysis. The chemical characteristics of lignin extracts were investigated using FTIR and were similar to other studies. The coated fabric did not cause a significant pressure drop and so could be used as an additional part of a sanitary mask. These results suggested the potential for lignin in filtration and antimicrobial textile applications.