01651nas a2200169   4500000000100000008004100001100001600042700001400058700001600072700001300088700001700101245011300118856007900231490000700310520115000317022001401467       2016                            d1 aRwegasila E1 aMubofu EB1 aNyandoro SS1 aErasto P1 aMunissi JJ E00aPreparation, Characterization and in Vivo Antimycobacterial Studies of Panchovillin-Chitosan Nanocomposites.  uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC5085621/pdf/ijms-17-01559.pdf0 v173 a<p>Chitosan (CS, molecular weight 20.2 kDa, degree of deacylation (DD) 73.31%) was successfully obtained by deacetylation of chitin extracted from shrimp (Litopenaeus vannamei) shell wastes. The encapsulation of the bioactive natural product, panchovillin (PANV), isolated from Erythrina schliebenii, on a chitosan-tripolyphosphate (CS/TPP) nano-framework was achieved by ionotropic gelation. Characterization of pure CS, CS/TPP and PANV-CS/TPP nanocomposites was performed by FTIR, SEM and XRD. The molecular weight of chitosan and the thermal stability of the materials were determined by MALDI-TOF-MS and simultaneous thermal analyzer (STA)/DTG, respectively. The respective encapsulation efficiency and loading capacity of the PANV were found to be 70% and 0.36%. The in vitro release studies showed an initial burst of 42% of PANV in the first six hours. This was followed by a slow and sustained release up to 72 h. The in vivo antimycobacterial activities of both PANV and PANV-CS/TPP nanocomposite against Mycobacterium indicus pranii (MIP) using Galleria mellonella larvae as an in vivo infection model are reported in this paper.</p>
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