35 documents found, page 1 of 4
The potential of almonds, hazelnuts, and walnuts SFE-CO2 extracts as sources of...
Kessler, Júlia C.; Vieira, Vanessa; Martins, Isabel M.; Manrique, Yaidelin A.; Ferreira, Patrícia; Calhelha, Ricardo C.; Afonso, AndreiaNuts have been part of the human diet since our early ancestors, and their use goes beyond nutritional purposes, for example, as aromatic sources for dairy products. This work explores the potential of almond (Prunus dulcis (Mill.) DA Webb), hazelnut (Corylus avellana L.), and walnut (Juglans regia L.) extracts as sources of food flavouring agents, suggesting a new added-value application for lower quality or e...
Moringa oleifera L. screening: SFE-CO2 optimisation and chemical composition of...
Kessler, Júlia C.; Manrique, Yaidelin A.; Martins, Isabel M.; Rodrigues, Alírio; Barreiro, M.F.; Dias, Madalena M.Moringa oleifera L. tree (Mo) has emerged as a rich alternative source of bioactive compounds to design cosmetic formulations. Supercritical carbon dioxide fluid extraction (SFE-CO2) was successfully applied on the screening of Mo seed, leaf, and root extracts. The extraction yield was evaluated by response surface methodology (RSM), for pressure and temperature ranges of 117–273 bar and 41–60 C, respectively, ...
The potential of aromatic extracts to enhance the sensory perception of bread
Vieira, Vanessa; Pascoalino, Liege; Pereira, Eliana; Ferreira, Elisabete; Afonso, Andreia; Kessler, Júlia C.; Martins, Isabel M.; Dias, Madalena M.Aromas are widely recognized for influencing human stimulation, mood and, consequently, choices and decisions [1]. This work aims to study the extracts of Rosmarinus of icinalis L. leaves and Prunus dulcis (Mill.) D. A. Webb fruits as food ingredients. The extracts were obtained by SFE-CO2technology. Three sample groups were prepared: i) bread containing rosemary extract (40 μL/Kg of bread) ii) bread containing...
Corrigendum to “chemical and organoleptic properties of bread enriched with Ros...
Kessler, Júlia C.; Vieira, Vanessa; Martins, Isabel M.; Manrique, Yaidelin A.; Ferreira, Patrícia; Calhelha, Ricardo C.; Afonso, AndreiaThe authors regret the inconvenience caused but found an error in the text of section 2.5.3 - “Sensory evaluation of the aroma of bread” of the article. It should read “Four concentrations of R. officinalis extract were used: 0.0, 0.5, 1.0 and 2.0 μL/100 g of bread.” instead of “Four concentrations of R. officinalis extract were used: 0.0, 0.5, 1.0 and 2.0 g/100 g of bread.” The authors would like to apologise ...
Obtaining aromatic extracts from portuguese Thymus mastichina L. by hydrodistil...
Kessler, Júlia C.; Vieira, Vanessa; Martins, Isabel M.; Manrique, Yaidelin A.; Afonso, Andreia; Ferreira, Patrícia; Mandim, FilipaHumans often respond to sensory impulses provided by aromas, and current trends have generated interest in natural sources of fragrances rather than the commonly used synthetic additives. For the first time, the resulting aroma of a selected culture of Thymus mastichina L. was studied as a potential food ingredient. In this context, dried (DR) and fresh (FR) samples were submitted to carbon dioxide (CO2) superc...
Chemical and organoleptic properties of bread enriched with Rosmarinus officina...
Kessler, Júlia C.; Vieira, Vanessa; Martins, Isabel M.; Manrique, Yaidelin A.; Ferreira, Patrícia; Calhelha, Ricardo C.; Afonso, AndreiaThe potential of R. officinalis L. (RO) extracts as a source of aromas was accessed by hydrodistillation (HD) and supercritical fluid extraction using carbon dioxide (SFE-CO2), followed by a series of analysis: quantification by GC-MS, sensory perception and description, and cytotoxicity against Vero cells. The extracts shown abundancy of α-pinene, eucalyptol, S-verbenone and camphor, contributing for the green...
Continuous production of melamine-formaldehyde microcapsules using a mesostruct...
Dias, Madalena M.; Moreira, Ana C.G.; Manrique, Yaidelin A.; Martins, Isabel M.; Fernandes, Isabel P.; Rodrigues, Alírio; Lopes, Jose C.B.A mesostructured NETmix reactor was adapted to develop a continuous process to produce microcapsules, focusing on the steps commonly used in batch formulation: the emulsion and cure. Microcapsules were formed through a polycondensation process by coating Miglyol, a skin-hydrating emollient, with melamine-formaldehyde, which is a resistant shell material with surface smoothness. Different recirculation times wer...
Functionalized textiles with PUU/limonene microcapsules: effect of finishing me...
Silva, Mónica; Martins, Isabel M.; Barreiro, M.F.; Dias, Madalena M.; Rodrigues, AlírioThe majority of the commercially available microencapsulated fragrance systems with interest for textile applications are based on phenol–formaldehyde/melamine–formaldehyde resins. Recognized human health problems concerning formaldehyde emissions led to the use of poly(urethane–urea) (PUU) systems. In this work, fabrics were impregnated with PUU microcapsules containing limonene produced by interfacial polymer...
Microencapsulation of red and white thyme oil in poly(lactic-co-glycolic) acid:...
Moreira, Ana C.G.; Martins, Isabel M.; Fernandes, Isabel P.; Barreiro, M.F.; Rodrigues, AlírioIn this work, microcapsules were formed by coating thyme oil with a biodegradable polymer, poly(lactic-co-glycolic) acid (PLGA), through a coacervation process recently developed at our laboratory and previously studied for poly lactic acid (PLA). The coacervation method involves dissolution of the polymer (PLGA 50:50) in dimethylformamide. After adding this solution to the oil/water (o/w) emulsion, and due the...
Main Results of the Questionnaire for Portuguese Entities Potential Users of Co...
Freire, Ana Cristina; Martins, Isabel M.; Ferreira, Cláudia; Gonçalves, Jorge; Roque, António José; Pinto, IsabelWithin the framework of the activities of the working group GT1 of the Portuguese Commission on Transportation Geotechnics – Promote the use of non-traditional materials in embankments and structural layers – a questionnaire addressed to potential national entities as construction and demolition recycled materials, C&DRM, producers/users was designed. The main objective was to collect information about the vari...