摘要
通过固相微萃取-气相色谱-质谱联用(solid phase micro-extraction-gas chromatography-mass spectrometer,SPME-GC-MS)法测定了β-环糊精在溶液中对香芹酮的保留率及两者之间的形成常数,并用冷冻干燥法制备了β-环糊精与香芹酮的包合物,采用扫描电镜(scanning electron microscopy,SEM)、红外光谱(infrared spectrum,IR)、X-衍射(X-ray diffraction,XRD)及热重分析(thermogravimetric analysis,TGA)对包合物进行结构表征。结果表明,香芹酮与β-环糊精在水溶液中形成了1∶1的包合物,且两者之间的形成常数为1 066.7mol^-1。冷冻干燥法制备的包合物的包合率为75.04%,SEM以及XRD分析结果都表明,β-环糊精在包合前后,其晶体形态发生了变化;IR和TG结果证明β-环糊精与香芹酮形成了包合物。由此得出,β-环糊精适合包埋香芹酮,可以提高香芹酮的热稳定性,从而使香芹酮的应用更加广泛。
The retention rate of carvone inβ-cyclodextrin solution and the formation constant between these two compounds were determined by SPME-GC-MS.The inclusion complex ofβ-cyclodextrin and carvone was prepared by freeze-drying method,and it was characterized by scanning electron microscopy(SEM),infrared spectroscopy(IR),X-ray diffraction(XRD)and thermogravimetric analysis(TGA).The results showed that carvone andβ-cyclodextrin formed an inclusion complex in a ratio of 1∶1 in aqueous solution,and the formation constant was 1 066.7 mol^-1.Moreover,the encapsulation efficiency of the complex was 75.04%,and SEM and XRD showed that the crystal morphology ofβ-cyclodextrin changed before and after inclusion.Furthermore,IR and TGA also showed thatβ-cyclodextrin and carvone formed an inclusion complex.Therefore,it can be concluded thatβ-cyclodextrin is suitable for embedding carvone to improve its thermal stability,which will be beneficial for broadening the application of carvone.
作者
薛硕
董曼
张璐璐
尹凯静
王琳
任婧楠
潘思轶
范刚
XUE Shuo;DONG Man;ZHANG Lulu;YIN Kaijing;WANG Lin;REN Jingnan;PAN Siyi;FAN Gang(College of Food Science and Technology,Huazhong Agricultural University,Key Laboratory of Environment Correlative Dietology,Ministry of Education,Wuhan 430070,China;Hubei Provincial Institute for Food Supervision and Test,Wuhan 430075,China)
出处
《食品与发酵工业》
CAS
CSCD
北大核心
2019年第12期183-188,共6页
Food and Fermentation Industries
基金
国家重点研发计划专项(项目批号:2017YFD0400101)
国家自然科学基金(项目批准号31671824)
湖北省重大科技创新计划项目(2015ABA035,2016ABA112)
关键词
Β-环糊精
香芹酮
形成常数
表征
β-cyclodextrin
carvone
formation constant
characterization
