Abstract
Flavonoids are a group of low-molecular-weight polyphenolic compounds of plant origin. They exhibit a variety of biological activities such as anti-inflammatory, antioxidant, antiviral, and antitumor etc. Baicalein, is a bioactive flavone constituent of Scutellariae radix with a wide range of beneficial activities. But the poor solubility and dissolution rate limit its oral intestinal absorption and bioavailability. The aim of this study was to develop an amphiphilic phytophospholipid complex in order to enhance the delivery of poorly soluble drug (baicalein). The baicalein-phospholipid complex (Ba-PLc) was prepared and evaluated for various physico-chemical parameters like drug loading, infrared absorption (FT-IR), differential scanning calorimetry (DSC), X-ray powder diffractometry (X-RPD), scanning electron microscopy (SEM), aqueous/ n-octanol solubility and dissolution study. In the SEM, phospholipid complex (Ba-PLc) was found fluffy and porous with rough surface morphology. FT-IR, DSC and X-RPD data confirmed the formation of phospholipid complex. The water/ n-octanol solubility of baicalein was improved significantly in the complex. Improved dissolution was shown by the phospholipid complex. The results of the study concluded that the phospholipid complex may be considered as a promising drug delivery system for improving the absorption and overall bioavailability of the baicalein molecule.
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