Delignification of hemp stalk using a low transition temperature mixture composed of choline chloride and lactic acid

This work used a literature search to select the most suitable system for delignification process of annual plants. was evaluated in terms lignin removal from plant biomass. Based on previous experiments, low transition temperature mixture (LTTM) used, which choline chloride and lactic acid molar ratio 1:2. Samples hemp fibers were examined. The biomass monitored by changing content main components. After application solvent at 100, 120, or 140 °C time 2 4 h, expressed Kappa number decreased level 22 13.7. Yields sown after LTTM ranged 72.5 90.6%. results confirmed that use (choline chloride/lactic acid) is extraction findings showed an effective delignifying agent hemp, as relatively 13.7 yield 75.9% achieved only h °C.