Eco-friendly Process to Degum Flax Roving with Deep Eutectic Solvent and Microbial Treatment.

Previous research(Yu et al. [25]) found that choline chloride-urea DES pretreatment could dissolve the hemicelluloses of ramie fibers, while choline chloride-oxalic acid dehydrate DES pretreatment could significantly enhance the nanofibrillation of the recycled fibers. Given the limited literature on DES degumming for flax roving, the effect of treatment temperature, treatment time, liquor ratio, and DES concentration on the DES pretreatment was investigated using orthogonal tests. Keywords: Flax roving; deep eutectic solvent; microbial degumming; Bacillus subtilis; orthogonal tests; gum; ; ; ; ; ; EN Flax roving deep eutectic solvent microbial degumming Bacillus subtilis orthogonal tests gum ZH 9410 9419 10 11/21/22 20221220 NES 221220 Introduction Flax, a traditional cellulosic fiber plant, is widely used in the textile, medical, and composite industries, and an important commercial crop in Europe(Pandey et al. [12]). The flax fibers obtained after DES pretreatment and microbial treatment were characterized by scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, thermogravimetric analysis (TGA), and X-ray diffractometry (XRD). [Extracted from the article]