Research Background: Fish by-products are discarded as waste, which has a significant impact on the environment. They have no economic value, but there are many opportunities to turn them into high value products. Due to significant quantities generated internationally and the continuous expansion of the market for ω-3 and ω-6 fatty acids as nutraceuticals, innovative technological approaches are needed to transform this waste into marketable products with added value, while limiting the risk of environmental pollution.
View Article and Find Full Text PDFThe supercritical fluids extraction (SFE) was used to extract the oleoresins from rosehip, followed by an in-depth phytochemical analysis and the development of two design-customized powders for different food and pharmaceutical applications. The SFE experiments allowed obtaining an oleoresins extraction yield of 11.85%.
View Article and Find Full Text PDFIn this study, high-value, carotenoid-rich oleoresin obtained by supercritical carbon dioxide (SFE-CO) extraction was used to develop five variants of microencapsulated delivery system, based on whey proteins isolate (WPI), in combination with inulin (I), pectin (P) or lactose (L). The WPI:I and WPI:L variants were also obtained by conjugation via Maillard reaction. The microencapsulation of the SFE-CO sea buckthorn pomace oleoresin was performed by emulsion, complex coacervation and freeze-drying, which allowed for the obtaining of five powders, with different phytochemicals profile.
View Article and Find Full Text PDFThe processing of sea buckthorn generates a significant amount of pomace, seeds and skin considered valuable sources of health-promoting macromolecules, such as carotenoids, pectin, flavonoids, phytosterols, polyunsaturated fatty acids and tocopherols. In this study, the bioactives from sea buckthorn pomace (SBP) were extracted using supercritical carbon dioxide (SFE-CO), at different temperatures and pressures, allowing for obtaining four fractions according to separators (S40 and S45). The highest carotenoid content of 396.
View Article and Find Full Text PDFTomato peels are used as a valuable material to extract lycopene-rich oleoresins by supercritical CO extraction. The extraction involves continuous circling of CO to the extractor after removing the solute in the separators, S40 and S45, where the solvent power of the CO is reduced by reducing pressure down to 20 MPa in S40 and 5 MPa in S45, respectively, leading to two extracts. Lycopene is found to be the major compound, representing 93% and 76% of the total carotenoids in S40 and S45 extracts, respectively.
View Article and Find Full Text PDFOur study describes in detail the binding mechanism between the main flavonoids that were extracted from onion skins by supercritical CO and peptides from whey proteins, from the perspective of obtaining multifunctional ingredients, with health-promoting benefits. The supercritical CO extract had 202.31 ± 11.
View Article and Find Full Text PDFLavender flowers were used in this study as a source of phytochemicals as naturally occurring antioxidants. Two different extraction techniques were applied, such as ultrasound-assisted (UAE) and supercritical fluids (SCE) methods. The comparative evaluation of the phytochemicals profile evidenced a higher content of chlorophyll and of 5.
View Article and Find Full Text PDFThe aim of this work is to obtain new food products enriched with bioactive compounds from concentrated grape juice microencapsulated by freeze drying using a whey protein isolate-chitosan system. The obtained powder showed an encapsulation efficiency of (86.1±4.
View Article and Find Full Text PDFOleoresin supercritical extracts from sea buckthorn were microencapsulated in whey proteins isolate and casein, in two states: native (N) and cross-linked mediated by transglutaminase (TG). The encapsulation efficiency showed values higher than 92% for total carotenoids and lycopene. Phytochemicals content was 352.
View Article and Find Full Text PDFSea buckthorn carotenoids extracted using CO supercritical fluids method were encapsulated within whey proteins isolate by transglutaminase (TG) mediated crosslinking reaction, coacervation and freeze drying. The encapsulation efficiency was 36.23 ± 1.
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