Adenosine Encapsulation and Characterization through Layer-by-Layer Assembly of Hydroxypropyl- β -Cyclodextrin and Whey Protein Isolate as Wall Materials

• Published in: Molecules (Basel, Switzerland) Vol. 29; no. 9; p. 2046
• Main Authors: Jin, Yudie, Zhang, Suning
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 29.04.2024
• Subjects: 2-Hydroxypropyl-beta-cyclodextrin - chemistry; Adenosine; Adenosine - chemistry; Capsules - chemistry; Composite materials; Drug Compounding - methods; Drug delivery systems; Drug Liberation; Drugs; Hydrogen Bonding; Hydrogen bonds; Hydrophobic and Hydrophilic Interactions; hydroxypropyl-β-cyclodextrin; layer-by-layer assembly; Layer-by-Layer Nanoparticles; Ligands; Models, Molecular; Molecular structure; Nanoparticles; Permeability; Proteins; Skin; stability; Toxicity; Transdermal medication; whey protein isolate; Whey Proteins - chemistry; adenosine; hydroxypropyl-β-cyclodextrin; layer-by-layer assembly; whey protein isolate; stability
• ISSN: 1420-3049; 1420-3049
• DOI: 10.3390/molecules29092046

Adenosine, as a water-soluble active substance, has various pharmacological effects. This study proposes a layer-by-layer assembly method of composite wall materials, using hydroxypropyl-β-cyclodextrin as the inner wall and whey protein isolate as the outer wall, to encapsulate adenosine within the core material, aiming to enhance adenosine microcapsules' stability through intermolecular interactions. By combining isothermal titration calorimetry with molecular modeling analysis, it was determined that the core material and the inner wall and the inner wall and the outer wall interact through intermolecular forces. Adenosine and hydroxypropyl-β-cyclodextrin form an optimal 1:1 complex through hydrophobic interactions, while hydroxypropyl-β-cyclodextrin and whey protein isolate interact through hydrogen bonds. The embedding rate of AD/Hp-β-CD/WPI microcapsules was 36.80%, and the 24 h retention rate under the release behavior test was 76.09%. The method of preparing adenosine microcapsules using composite wall materials is environmentally friendly and shows broad application prospects in storage and delivery systems with sustained release properties.