Phenolic compounds are often chemically unstable; therefore, their encapsulation in food grade polymers can be of great interest.Phenolics of different hydrofobicity (gallic acid and naringenin) were encapsulated in pullulan nanofibers-an edible polysaccharide-by means of homogeneous solution electrospinning and the use of ß-cyclodextrin was studied to increase the charge amounts of hydrophobic phenolic. Macroscopically homogeneous nanofibrous membranes were obtained, with fiber thicknesses ranging between 200-300 nm, with or without cyclodextrin microcrystalline aggregates. The charges were 35.5±4.97 mg g-1 of pullulan for gallic acid and 0.0450±0.006 mg g-1of pullulan for naringenin, this latter increased 87-fold after the use of ß-cyclodextrin. The materials obtained are particularly promising in applications where instantaneous release of the load is required
Encapsulación de compuestos fenólicos en nanofibras biopoliméras de grado alimentario / C.A. Fuenmayor, M.S. Cosio. ((Intervento presentato al 3. convegno Congreso Internacional en Investigación e Innovación en Ciencia y Tecnología de Alimentos tenutosi a Bogotà nel 2016.
Encapsulación de compuestos fenólicos en nanofibras biopoliméras de grado alimentario
M.S. CosioCo-primo
2016
Abstract
Phenolic compounds are often chemically unstable; therefore, their encapsulation in food grade polymers can be of great interest.Phenolics of different hydrofobicity (gallic acid and naringenin) were encapsulated in pullulan nanofibers-an edible polysaccharide-by means of homogeneous solution electrospinning and the use of ß-cyclodextrin was studied to increase the charge amounts of hydrophobic phenolic. Macroscopically homogeneous nanofibrous membranes were obtained, with fiber thicknesses ranging between 200-300 nm, with or without cyclodextrin microcrystalline aggregates. The charges were 35.5±4.97 mg g-1 of pullulan for gallic acid and 0.0450±0.006 mg g-1of pullulan for naringenin, this latter increased 87-fold after the use of ß-cyclodextrin. The materials obtained are particularly promising in applications where instantaneous release of the load is requiredPubblicazioni consigliate
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