PMID- 25331189 OWN - NLM STAT- MEDLINE DCOM- 20161025 LR - 20161230 IS - 1097-9867 (Electronic) IS - 1083-7450 (Linking) VI - 21 IP - 1 DP - 2016 TI - The effect of formulative parameters on the size and physical stability of SLN based on "green" components. PG - 98-107 LID - 10.3109/10837450.2014.971376 [doi] AB - Cocoa butter (CB) is a largely used excipient in pharmaceutical field. Aim of this work was to set formulative parameters for the preparation of SLN based on "green" lipid matrix for drug delivery as natural, both human and environmental safe systems. Double emulsion technique (w1/o/w2) was selected for SLN preparation. The effect on the dimensional properties of different surfactants (Tween 80 and PEG 40 monostearate) and co-surfactants (PEG400 monostearate, Emulium(R) Kappa2 and Plurol(R)Stearique) at different concentrations was evaluated. Stability tests were performed. SLN dispersions were exsiccated and the effect of the dried process on SLN size was evaluated. The influence of temperature on SLN dimensions was investigated at 37 degrees C. MTT test was performed on raw materials and formulations. The w1/o/w2 is suitable, rapid and economic technique for the preparation of CB SLN. Tween 80-Plurol Stearique combination gives the best results: particles size less than 400 nm and PI of about 0.4 are obtained when PS 2% is used. Both raw materials and formulations are safe. The importance to evaluate the effect of different surfactant and/or co-surfactant on the dimensional properties of SLN is evident by selecting substances with preferable safety profiles, and favorable environmental properties to develop stable "green" SLN. FAU - Soddu, Elena AU - Soddu E AD - a Dipartimento di Chimica e Farmacia and. FAU - Rassu, Giovanna AU - Rassu G AD - a Dipartimento di Chimica e Farmacia and. FAU - Cossu, Massimo AU - Cossu M AD - a Dipartimento di Chimica e Farmacia and. FAU - Giunchedi, Paolo AU - Giunchedi P AD - a Dipartimento di Chimica e Farmacia and. FAU - Cerri, Guido AU - Cerri G AD - b Dipartimento di Scienze della Natura e del Territorio , Universita di Sassari , Sassari , Italy. FAU - Gavini, Elisabetta AU - Gavini E AD - a Dipartimento di Chimica e Farmacia and. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20141021 PL - England TA - Pharm Dev Technol JT - Pharmaceutical development and technology JID - 9610932 RN - 0 (Lipids) RN - 0 (Polysorbates) SB - IM MH - Caco-2 Cells MH - Cell Survival/drug effects/physiology MH - Chemistry, Pharmaceutical MH - Dose-Response Relationship, Drug MH - Drug Stability MH - Green Chemistry Technology/*methods MH - Humans MH - Lipids/*chemical synthesis/pharmacology MH - Nanoparticles/administration & dosage/*chemistry MH - *Particle Size MH - Polysorbates/chemical synthesis/pharmacology OTO - NOTNLM OT - Cocoa butter OT - SLN OT - renewal resource OT - size OT - surfactant/co-surfactant mixture EDAT- 2014/10/22 06:00 MHDA- 2016/10/26 06:00 CRDT- 2014/10/22 06:00 PHST- 2014/10/22 06:00 [entrez] PHST- 2014/10/22 06:00 [pubmed] PHST- 2016/10/26 06:00 [medline] AID - 10.3109/10837450.2014.971376 [doi] PST - ppublish SO - Pharm Dev Technol. 2016;21(1):98-107. doi: 10.3109/10837450.2014.971376. Epub 2014 Oct 21.