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Colloids Surf B Biointerfaces

Title:		Development and rheological properties of ecological emulsions formulated with a biosolvent and two microbial polysaccharides
Author(s):		Trujillo-Cayado LA; Alfaro MC; Munoz J; Raymundo A; Sousa I;
Address:		"Reologia Aplicada, Tecnologia de Coloides, Departamento de Ingenieria Quimica, Facultad de Quimica, Universidad de Sevilla c/P, Garcia Gonzalez, 1, E41012 Sevilla, Spain. LEAF-Linking Landscape Environment Agriculture and Food, Instituto Superior de Agronomia, University of Lisbon, Tapada da Ajuda, 1349-017 Lisboa, Portugal. Electronic address: anabraymundo@isa.ulisboa.pt. LEAF-Linking Landscape Environment Agriculture and Food, Instituto Superior de Agronomia, University of Lisbon, Tapada da Ajuda, 1349-017 Lisboa, Portugal"
Journal Title:		Colloids Surf B Biointerfaces
Year:		2016
Volume:		20151202
Issue:
Page Number:		53 - 58
DOI:		10.1016/j.colsurfb.2015.11.046
ISSN/ISBN:		1873-4367 (Electronic) 0927-7765 (Linking)
Abstract:		"The influence of gum concentration and rhamsan/welan gum ratio on rheological properties, droplet size distribution and physical stability of eco-friendly O/W emulsions stabilized by an ecological surfactant were studied in the present work. The emulsions were prepared with 30wt% alpha-pinene, a terpenic solvent and an ecological alternative for current volatile organic compounds. Rheological properties of emulsions showed an important dependence on the two studied variables. Flow curves were fitted to the Cross model and no synergistic effect between rhamsan and welan gums was demonstrated. Emulsions with submicron mean diameters were obtained regardless of the gum concentration or the rhamsan/welan ratio used. Multiple light scattering illustrated that creaming was practically eliminated by the incorporation of polysaccharides. The use of rhamsan and welan gums as stabilizers lead to apparent enhancements in emulsion rheology and physical stability"
Keywords:		"Bicyclic Monoterpenes Chemistry, Pharmaceutical/methods Drug Stability Emulsions/*chemistry Monoterpenes/*chemistry Polysaccharides, Bacterial/*chemistry Rheology Solvents/*chemistry Surface-Active Agents/chemistry Water/chemistry Biosolvent Eco-friendly;"
Notes:		"MedlineTrujillo-Cayado, L A Alfaro, M C Munoz, J Raymundo, A Sousa, I eng Research Support, Non-U.S. Gov't Netherlands 2016/02/02 Colloids Surf B Biointerfaces. 2016 May 1; 141:53-58. doi: 10.1016/j.colsurfb.2015.11.046. Epub 2015 Dec 2"