Optimization of bio-chemical degumming of Ramie fiber for improved strength & luster.

Textile industries are currently not showing much interest in Ramie fibers due to the difficulties associated with their post-harvest downstream processing. The degumming chemicals are often detrimental to the environment upon discharged. Chemical degumming alone results in fibril-released coarse and brittle fibers. This problem has been addressed by combining partial chemical treatment with microbial degumming of the fibers for 72 h at 37 °C using a novel microbial formulation with Bacillus thuringiensis MCC2138 and Bacillus subtilis ABDR01. The extracellular microbial enzyme-based degumming without the release of fibrils produced a durable, soft, and lustrous fiber with higher tensile strength while utilizing fewer chemicals, thereby leading to lower discharge toxicity. The improved texture and strength compared to complete chemical treatment are attributed to even degumming of the fiber ensuring proper spinnability. Through this approach, Ramie is expected to gain visibility in the global textile market, thereby leading to Ramie cultivators' economic benefits.