title: Microencapsulation of Nigella sativa oleoresin by spray drying for food and nutraceutical applications.
abstract: Oleoresin of Nigella sativa L. (Black cumin) was obtained from the seeds using hexane extraction at room temperature. The oleoresin was emulsified in an aqueous solution containing gum Arabic/maltodextrin (1:1 w/w) and then encapsulated in powder form by spray drying. The characteristics of the obtained powder including moisture content, bulk density, wettability, morphology, encapsulation efficiency were evaluated. The effect of the spray drying on the chemical composition of the volatile oil fraction of N. sativa oleoresin was also evaluated using gas chromatographic-mass spectroscopic analysis. Results indicated that the encapsulation efficiency of the whole oleoresin in the powder can range from 84.2±1.5% to 96.2±0.2% depending on the conditions of extracting the surface oil from the powder. On the other hand the encapsulation efficiency of the volatile oil fraction was 86.2% ±4.7. The formulated N. sativa L. oleoresin powder can be used in the fortification of processed food and nutraceuticals.
authors.affiliation: Aroma & Flavor Chemistry Department, National Research Centre, Cairo, Egypt. Electronic address: amr_edris@hotmail.com.
authors.forename: Amr E
authors.initials: AE
authors.lastname: Edris
authors.affiliation: Institute of General Food Chemistry, Lodz University of Technology, Lodz, Poland.
authors.forename: Danuta
authors.initials: D
authors.lastname: Kalemba
authors.affiliation: Faculty of Process and Environmental Engineering, Lodz University of Technology, Lodz, Poland.
authors.forename: Janusz
authors.initials: J
authors.lastname: Adamiec
authors.affiliation: Faculty of Process and Environmental Engineering, Lodz University of Technology, Lodz, Poland.
authors.forename: Marcin
authors.initials: M
authors.lastname: Piątkowski
mesh_terms: D003890:Desiccation; D019587:Dietary Supplements / Q000032:analysis*; D004339:Drug Compounding; D004655:Emulsions; D005503:Food Additives / Q000032:analysis; D005511:Food Handling; D006170:Gum Arabic / Q000737:chemistry; D031881:Nigella sativa / Q000737:chemistry*; D009822:Oils, Volatile; D010936:Plant Extracts / Q000032:analysis*; D011134:Polysaccharides / Q000737:chemistry; D011208:Powders / Q000737:chemistry; D012639:Seeds / Q000737:chemistry
chemical_list: D004655:Emulsions; D005503:Food Additives; D009822:Oils, Volatile; D010936:Plant Extracts; D011134:Polysaccharides; D011208:Powders; C018620:oleoresins; C008315:maltodextrin; D006170:Gum Arabic
keywords: Microencapsulation; Nigella sativa oleoresin; Nutraceutical applications; Powder; Spray drying