β-环糊精与柠檬精油、月桂精油包合物的表征、热稳定性和抑菌性能评价  

Characterization,Thermal Stability and Antibacterial Performance Evaluation ofβ-Cyclodextrin Inclusion Complexes with Lemon Essential Oil and Laurel Essential Oils

作　　者：曹川 解鹏 CAO Chuan;JIE Peng(Anhui Vocational and Technical College Faculty of Environment and Life Health,Hefei,Anhui 2300111,China;Nanjing University of Finance and Economics Institute of Food Economics,Nanjing,Jiangsu 210023,China)

机构地区：[1]安徽职业技术学院环境与生命健康学院,安徽合肥2300111 [2]南京财经大学粮食经济研究院,江苏南京210023

出　　处：《粮油食品科技》2025年第2期75-82,共8页Science and Technology of Cereals,Oils and Foods

基　　金：安徽省2023年省级质量工程项目“食品检验检测技术专业教师教学创新团队”(2022cxtd076);安徽省高等学校自然科学研究项目重大项目“山苍子精油–大环糊精微胶囊制备、性质表征及缓释性能研究”(2022AH040276);2023年安徽省职业与成人教育学会教育科研规划课题“食品检验检测技术一流专业群建设路径的探索与实践”(AZCJ2023049)。

摘　　要：用共沉淀法制备了柠檬精油(LEEO)和月桂精油(LAEO)与β-环糊精(β-CD)的包合物,旨在提高植物精油的稳定性并实现其控制释放。通过扫描电子显微镜(SEM)、傅里叶变换红外光谱(FTIR)、X射线衍射(XRD)以及热重-差示热量扫描联用仪(TGA-DSC)对所制备的包合物进行了全面表征。SEM图像显示精油分子被有效地嵌入β-CD分子的内腔中,这一结构有助于精油分子抵御外界环境的影响,从而增强其稳定性。FTIR和XRD的结果进一步证实了包合物的形成,TGA-DSC分析表明,与未包合的精油相比,包合物展现出了更佳的热稳定性,这对于需要热处理的应用场景,如食品加工或制药行业,具有重要意义。抗菌性能测试显示,LEEO和LAEO对金黄色葡萄球菌和大肠杆菌均具有显著的抗菌效果。β-CD的包合作用不仅提高了精油的稳定性,还显著延长了其抗菌活性,它作为一种高效的壁材,其微胶囊化技术在食品包装行业的应用前景广阔。This study successfully prepared inclusion complexes of lemon essential oil(LEEO)and Laurel essential oil(LAEO)withβ-cyclodextrin(β-CD)using the co precipitation method,with the aim of enhancing the stability of plant essential oils and achieving their controlled release.The prepared inclusion complexes were comprehensively characterized using scanning electron microscopy(SEM),Fourier transform infrared spectroscopy(FTIR),X-ray diffraction(XRD),and thermogravimetric analysis-differential scanning calorimetry(TGA-DSC).SEM images reveal that essential oil molecules are effectively encapsulated within the inner cavities ofβ-CD molecules,which enables the essential oil molecules resist external environmental influences and enhance their stability.The results of FTIR and XRD further confirmed the formation of the inclusion complex,laying the foundation for studying their physicochemical and chemical properties.In addition,TGA-DSC analysis showed that the inclusion complex exhibited better thermal stability compared to unencapsulated essential oils,which holds great significance for applications that require heat treatment,such as food processing or pharmaceutical manufacturing.Antibacterial performance tests demonstrate that LEEO and LAEO exist significant antibacterial effects against both Staphylococcus aureus and Escherichia coli.The encapsulation effect ofβ-CD not only enhances the stability of essential oils,but also significantly extends their antibacterial activity.As an efficient wall material,β-CD can significantly enhance the stability and antibacterial performance of essential oils,and its microencapsulation technology has broad application prospects in the food packaging industry.

关 键 词：Β-环糊精 精油 包埋 微胶囊 

分 类 号：TS20[轻工技术与工程—食品科学]