| Abstract:Currently, there are issues of the loss of aromatic substances, the retention of characteristic styles, and the insufficient enhancement of moisture sensation in cigarettes during tobacco processing and storage. Microencapsulation technology is commonly used to encapsulate cigarette flavorings to achieve better effects for cigarette use. Microcapsules consist of shell materials and core materials. The shell materials can effectively protect the core material from the bad impact of the external environment, thus enhancing the stability of the core material. The shell materials of cigarette microcapsules commonly come from biomass-based materials, such as gelatin, sodium alginate, chitosan, cellulose and other plant-based materials. Biomass-based materials, used as microcapsule wall materials, offer several advantages such as eco-friendly, renewable, biodegradable, and exhibiting favorable film-forming properties. The core materials of cigarette microcapsules mainly include natural and synthetic flavorings. The preparation methods of biomass-based microcapsules mainly include chemical methods, physical methods, and physicochemical methods. Choosing the appropriate preparation method can improve the encapsulation efficiency of the core material and reduce losses. This paper summarizes the shell and core materials of the biomass-based microcapsules in tobacco. Their preparation methods are demonstrated. The flavorings release mechanism is explained. The application of biomass-based microcapsules in tobacco are further illustrated, and a summary and outlook are provided. This paper lays a theoretical foundation for the further application of biomass-based microcapsules in tobacco. |