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Mucoadhesive Alginate/Poly (L-Lysine)/Thiolated Alginate Microcapsules for Oral Delivery of Lactobacillus Salivarius 29

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In this study, thiolated alginate was synthesized by introduction of cysteine to alginate to prepare mucoadhesive alginate/poly (L-lysine)/thiolated alginate (APTA) microcapsules for efficient oral delivery of Lactobacillus salivarius 29 (LS29), a novel therapeutic Lactobacillus strain, in vitro and in vivo. About 759 ± 32.4 μM of cysteine per gram of alginate was introduced by estimation of Ellman's reagent reaction. LS29-loaded APTA microcapsules provided suitable morphology, size, and a high loading content and efficiency. LS29 in LS29-loaded APTA microcapsules were effectively protected from simulated gastric condition (pH 2.0) than that of unprotected LS29. LS29 were released from APTA microcapsules in simulated intestinal condition (pH 7.2) with a time-dependent manner. The in vitro and in vivo mucoadhesion study suggested that APTA microcapsules had remarkably stronger mucoadhesive property and provided a promising delivery system for oral administration of LS29.
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Keywords: LACTOBACILLUS SALIVARIUS 29; MUCOADHESIVE MICROCAPSULES; ORAL DELIVERY; THIOLATED ALGINATE

Document Type: Research Article

Publication date: 2011-08-01

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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