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Research Article

Enhanced payload of lipid nanocarriers using supersaturated solution prepared by solvent-mediated method

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Pages 657-666 | Received 28 Jun 2012, Accepted 28 Jan 2013, Published online: 21 Feb 2013
 

Abstract

With the aim to effectively enhance the payload for nanocarriers, supersaturated deltamethrin (SSD) solution was prepared using the solvent-mediated method to produce lipid nanocarriers by a combination method of homogenization and sonication. In this study, deltamethrin was used as an active ingredient, corn oil was used as a lipid medium, soybean lecithin and Tween-80 were used as surfactants. At 25°C, the solubility of deltamethrin in SSD solution prepared by solvent-mediated method was 3.4 times and 1.5 times higher than that in saturated deltamethrin (SD) solution and that in SSD solution prepared by thermal-mediated method, respectively. Therefore, compared to the use of SD solution for the production of nanocarriers, the use of SSD solution significantly enhanced the payload, while keeping the encapsulation efficiency high. Particularly, nanocarriers produced from SSD solution prepared by solvent-mediated method had the higher payload of 2.1 times and 4.4 times compared with preparations using SSD solution prepared by thermal-mediated method and SD solution, respectively.

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