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| Nicotine Loading MOF@BC Preparation of Composite Materials and Their Application in Heating Cigarette Flakes |
| Received:June 11, 2024 |
| DOI：10.11980/j.issn.0254-508X.2024.12.009 |
| Key Words:heat-not-burn cigarettes new tobacco sheets nicotine sustained-release bacterial cellulose MOF composite material |
| Fund Project:国家烟草专卖局重大专项项目“基于烟草发酵纤维素载香材料的加热卷烟专用再造烟叶”（110202101020）；国家烟草专卖局重点研发项目“以废弃烟草生物合成烟碱控释材料的技术开发及应用”（110202102031）；河南中烟工业有限责任公司科技项目（CN2022019）。 |
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| Abstract:In this paper， a new metal-organic framework （MOF） material was prepared with β-cyclodextrin （β-CD） and NaOH as raw materials， and the β-CD-MOF@BC composite was obtained by in-situ modification of bacterial cellulose （BC） with the MOF material. A systematic analysis was conducted on the composite materials from the aspects of microstructure， nicotine release performance， and thermal decomposition aroma products using scanning electron microscopy， X-ray diffraction， thermogravimetric experiments， thermal decomposition， and thermal desorption. The results showed that nicotine-loaded MOF materials with abundant pore sizes could be prepared by the new method proposed in this study. The β-CD-MOF materials were embedded in the BC fiber mesh， indicating that the MOF materials successfully modified BC to form a composite material. The maximum weight loss stage temperature of the β-CD-MOF@BC composite material was delayed by 44 ℃ compared to the blank BC material， and the nicotine release increased by 5.8 percentage points with a time delay of 1.055 min. The load capacity of the composite was better than that of blank BC material， and it had a certain slow release property. Thermal desorption of β-CD-MOF@BC composite materials released up to 20 types of aroma components， which was beneficial for improving the sensory quality of food intake. |
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