Characterization and evaluation of sodium alginate-based edible films by incorporation of star anise ethanol extract/hydroxypropyl-β-cyclodextrin inclusion complex

2022 ◽  
Vol 31 ◽  
pp. 100785
Tianzhu Guan ◽  
Ning Li ◽  
Guangjie Zhang ◽  
Peiyu Xue
2017 ◽  
Vol 10 (10) ◽  
pp. 1844-1853 ◽  
Youxin Ye ◽  
Mingjin Zhu ◽  
Keyan Miao ◽  
Xinying Li ◽  
Defu Li ◽  

2021 ◽  
Vol 261 ◽  
pp. 117877
Longwei Jiang ◽  
Fuguo Jia ◽  
Yanlong Han ◽  
Xiangyi Meng ◽  
Yawen Xiao ◽  

Molecules ◽  
2021 ◽  
Vol 26 (13) ◽  
pp. 4089
Katarzyna Betlejewska-Kielak ◽  
Elżbieta Bednarek ◽  
Armand Budzianowski ◽  
Katarzyna Michalska ◽  
Jan K. Maurin

Racemic ketoprofen (KP) and β-cyclodextrin (β-CD) powder samples from co-precipitation (1), evaporation (2), and heating-under-reflux (3) were analysed using X-ray techniques and nuclear magnetic resonance (NMR) spectroscopy. On the basis of NMR studies carried out in an aqueous solution, it was found that in the samples obtained by methods 1 and 2, there were large excesses of β-CD in relation to KP, 10 and 75 times, respectively, while the sample obtained by method 3 contained equimolar amounts of β-CD and KP. NMR results indicated that KP/β-CD inclusion complexes were formed and the estimated binding constants were approximately 2400 M−1, showing that KP is quite strongly associated with β-CD. On the other hand, the X-ray single-crystal technique in the solid state revealed that the (S)-KP/β-CD inclusion complex with a stoichiometry of 2:2 was obtained as a result of heating-under-reflux, for which the crystal and molecular structure were examined. Among the methods used for the preparation of the KP/β-CD complex, only method 3 is suitable.

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