Encapsulation of Polyphenols from Leaves into Liposomes as a Strategy to Improve Their Delivery.

This study is focused on the encapsulation of polyphenols from leaves into liposomes as a strategy to improve their delivery. Liposomes loaded with leaves extract were obtained and characterized for particle size, polydispersity, entrapment efficiency, and stability. Liposomes presented entrapment efficiency higher than 75%, nanometric particle size, narrow polydispersity, and good stability over three months at 4 °C.

Polyphenolic Extract from L. Leaves Free and Loaded into Lipid Vesicles.

The paper deals with the preparation and characterisation of hydroalcoholic polyphenolic extract from (SE) leaves that was further loaded into three-types of lipid vesicles: liposomes, transfersomes, and ethosomes, to improve its bioavailability and achieve an optimum pharmacological effect. For L.-loaded lipid vesicles, the entrapment efficiency, particle size, polydispersity index and stability were determined.

Composite films of poly(vinyl alcohol)-chitosan-bacterial cellulose for drug controlled release.

Mono and multilayer composite films of poly(vinyl alcohol)-chitosan-bacterial cellulose (PVA/chitosan/BC) have been prepared to achieve controlled release of ibuprofen sodium salt (IbuNa) as model drug. The composite films have been characterized by Fourier transformed infrared spectroscopy (FTIR) and X-ray diffraction (XRD). Surface morphology was investigated by scanning electron microscopy (SEM).