Physical-Chemical Characterization and Formulation Considerations for Solid Lipid Nanoparticles

Harsh Chauhan, Sarat Mohapatra, Daniel J. Munt, Shantanu Chandratre, Alekha K. Dash

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Pure glyceryl mono-oleate (GMO) (lipid) and different batches of GMO commonly used for the preparation of GMO-chitosan nanoparticles were characterized by modulated differential scanning calorimetry (MDSC), cryo-microscopy, and cryo-X-ray powder diffraction techniques. GMO-chitosan nanoparticles containing poloxamer 407 as a stabilizer in the absence and presence of polymers as crystallization inhibitors were prepared by ultrasonication. The effect of polymers (polyvinyl pyrrolidone (PVP), Eudragits, hydroxyl propyl methyl cellulose (HPMC), polyethylene glycol (PEG)), surfactants (poloxamer), and oils (mineral oil and olive oil) on the crystallization of GMO was investigated. GMO showed an exothermic peak at around −10°C while cooling and another exothermic peak at around −12°C while heating. It was followed by two endothermic peaks between 15 and 30 C, indicative of GMO melting. The results are corroborated by cryo-microscopy and cryo-X-ray. Significant differences in exothermic and endothermic transition were observed between different grades of GMO and pure GMO. GMO-chitosan nanoparticles resulted in a significant increase in particle size after lyophilization. MDSC confirmed that nanoparticles showed similar exothermic crystallization behavior of lipid GMO. MDSC experiments showed that PVP inhibits GMO crystallization and addition of PVP showed no significant increase in particle size of solid lipid nanoparticle (SLN) during lyophilization. The research highlights the importance of extensive physical-chemical characterization for successful formulation of SLN.

Original languageEnglish
Pages (from-to)640-651
Number of pages12
JournalAAPS PharmSciTech
Volume17
Issue number3
DOIs
StatePublished - Jun 1 2016

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nanoparticles
Oleic Acid
Nanoparticles
oleic acid
Lipids
lipids
vinyl compounds
Polyvinyls
crystallization
Crystallization
Pyrrolidinones
Differential Scanning Calorimetry
Chitosan
differential scanning calorimetry
chitosan
Poloxamer
Freeze Drying
freeze drying
Particle Size
particle size

All Science Journal Classification (ASJC) codes

  • Pharmaceutical Science

Cite this

Physical-Chemical Characterization and Formulation Considerations for Solid Lipid Nanoparticles. / Chauhan, Harsh; Mohapatra, Sarat; Munt, Daniel J.; Chandratre, Shantanu; Dash, Alekha K.

In: AAPS PharmSciTech, Vol. 17, No. 3, 01.06.2016, p. 640-651.

Research output: Contribution to journalArticle

Chauhan, Harsh ; Mohapatra, Sarat ; Munt, Daniel J. ; Chandratre, Shantanu ; Dash, Alekha K. / Physical-Chemical Characterization and Formulation Considerations for Solid Lipid Nanoparticles. In: AAPS PharmSciTech. 2016 ; Vol. 17, No. 3. pp. 640-651.
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