Biomimetic Degradation of Lignin in Tobacco by Fe-CA System

Abstract

In order to reduce the lignin content in tobacco and improve the quality of reconstituted tobacco,Fe-CA biomimetic system was prepared and the treatment process of tobacco(stem and scrap) was optimized by orthogonal experiment.The results indicated that the optimal condition was: temperature 45 ℃,treatment time 40 minutes,and application amount of Fe-CA biomimetic system 40 mmol/kg.The lignin content in tobacco decreased from 3.56% to 1.69%,and the removal rate reached 52.5%.SEM observation indicated that,the surface of treated tobacco became rough and scattered with many pores and holes,some fiber framework appeared.It was suggested that Fe-CA biomimetic treatment could reduce lignin in tobacco efficiently.Moreover,the sensory evaluation showed that the Fe-CA biomimetic treatment improved the aroma,harmony and quality of reconstituted tobacco and reduced its offensive odor and irritation.