40 documents found, page 1 of 4
Green extraction of anthocyanin from red cabbage waste using acid whey as a pro...
Oliveira, Jaine; Benvenutti, Laís; Albuquerque, Bianca R.; Finimundy, Tiane C.; Mandim, Filipa; Pires, Tânia C.S.P.; Pereira, Carla; Corrêa, Rúbia C.G.The use of acid whey as a biological-based solvent may be an innovative and sustainable strategy to add value to agro-industrial by-products. This study assessed acid whey as a solvent for extracting anthocyanins from discarded red cabbage leaves. Methods such as Heating and Stirring Extraction (HSE), Ultrasound-Assisted Extraction (UAE), and Pressurized Liquid Extraction (PLE) were compared using acid whey or ...
Recovery of anthocyanins from Eugenia spp. fruit peels: a comparison between he...
Albuquerque, Bianca R.; Pinela, José; Pereira, Carla; Mandim, Filipa; Heleno, Sandrina A.; Oliveira, Beatriz; Barros, LillianNatural colorants have gained increased popularity among consumers and food producers due to their reputation as safer and healthier alternatives to commonly used artificial analogues. These natural pigments can be obtained from by-products resulting from food processing, such as the fruit peels of the Brazilian species Eugenia brasiliensis and Eugenia involucrata, thus contributing to the valorisation and circ...
Exploring the bioactive compounds from berry biowaste: Eugenia involucrata DC. ...
Albuquerque, Bianca R.; Finimundy, Tiane; Pinela, José; Pires, Tânia C.S.P.; Calhelha, Ricardo C.; Vaz, Josiana A.; Corrêa, Rúbia C.G.Aiming at valorising the Eugenia involucrata residue, the present work aimed in investigating the chemical profile and in vitro bioactivities of the residue (EIR) and its individual parts, i.e., seeds (EIS) and peels (EIP). Chromatographic analyses showed that EIP had the highest content of organic acids, tocopherols, and anthocyanins, whereas EIS was the richest in hydrolysable tannins. bis-HHDP-glucoside isom...
Jatoba (Hymenaea courbaril L.) Pod Residue: A Source of Phenolic Compounds as V...
Del Angelo, Gabriela Lucca; Oliveira, Isabela Silva de; Albuquerque, Bianca R.; Kagueyama, Samanta Shiraishi; Silva, Tamires Barlati VieiraThis study aimed at investigating the chemical composition and a selected group of bioactivities of jatoba (Hymenaea courbaril L.) pod residue. An aqueous extract (deionized water; AE) and a hydroethanolic extract (ethanol: deionized water, 70:30 v/v; ETOH) were obtained via maceration. Ten phenolic compounds were characterized via LC-DAD-ESI/MSn: seven procyanidins, two quercetin derivatives and one taxifolin ...
Insights into the chemical composition and in vitro bioactive properties of man...
Albuquerque, Bianca R.; Dias, Maria Inês; Pinela, José; Calhelha, Ricardo C.; Pires, Tânia C.S.P.; Alves, Maria José; Corrêa, Rúbia C.G.The industrial processing of mangosteen (Garcinia mangostana L.) generates high amounts of waste, as similar to 60% of the fruit is formed by an inedible pericarp. However, its pericarp has been explored as a source of xanthones; nevertheless, studies addressing the recovery of other chemical compounds from such biomass are still scarce. Hence, this study intended to elucidate the chemical composition of the ma...
Brazilian berry waste as a source of bioactive compounds: grumixama (Eugenia br...
Albuquerque, Bianca R.; Finimundy, Tiane C.; Pinela, José; Pires, Tânia C.S.P.; Mandim, Filipa; Vaz, Josiana A.; Corrêa, Rúbia C.G.; Oliveira, BeatrizGrumixama, Eugenia brasiliensis Lam., is a Brazilian berry little explored commercially and scientifically. However, local small producers market this fruit in the form of frozen pulp, which generates bioresidues, composed of seeds and peels. With the view to propose strategies for valuing grumixama, this study aimed to determine the chemical composition and assess the bioactivities of the hydroethanolic extrac...
Ultrasound-assisted extraction of hydroxytyrosol and tyrosol from olive pomace ...
Madureira, Joana; Albuquerque, Bianca R.; Dias, Maria Inês; Pinela, José; Calhelha, Ricardo C.; Santos-Buelga, Celestino; Margaça, Fernanda M.A.Ultrasound-assisted extraction (UAE) was used to recover hydroxytyrosol and tyrosol from olive pomace, a residue generated by the olive oil industry. The extraction process was optimized using response surface methodology (RSM), with processing time, ethanol concentration and ultrasonic power as the combined independent variables. The highest amounts of hydroxytyrosol (36 +/- 2 mg g(-1) of extract) and tyrosol ...
New challenges and opportunities from secondary metabolites
Oliveira, Izamara; Albuquerque, Bianca R.; Ueda, Jonata Massao; Alves, Maria José; Ferreira, Isabel C.F.R.; Barros, Lillian; Heleno, Sandrina A.Secondary metabolites (SMs), usually of complex structure and low molecular weight, have remarkable biological activities and, unlike the primary metabolites, are presented in low concentrations and in certain groups of plants. These, in turn, arouse great interest, not only for the biological activities exerted by plants in response to environmental stimuli, but also for the immense pharmacological activity th...
Optimization and comparison of heat- and ultrasound-assisted extraction methods...
Albuquerque, Bianca R.; Pinela, José; Pereira, Carla; Calhelha, Ricardo C.; Oliveira, Izamara; Heleno, Sandrina A.; Oliveira, Beatriz; Barros, LillianThis study is aimed at maximizing the recovery of anthocyanins from Sicana odorifera fruit epicarp by heat- and ultrasoundassisted extraction (HAE and UAE, respectively) and at evaluating the in vitro bioactive properties of the anthocyanin-rich extracts obtained under optimized conditions. The optimization process utilized response surface methodology (RSM) through a central composite rotatory design (CCRD), c...
Valorization of rambutan (Nephelium lappaceum L.) peel: chemical composition, b...
Albuquerque, Bianca R.; Pinela, José; Dias, Maria Inês; Pereira, Carla; Petrović, Jovana; Soković, Marina; Calhelha, Ricardo C.; Oliveira, BeatrizChemical constituents and bioactive properties of rambutan (Nephelium lappaceum L.) peel were characterized and heat-/ultrasound-assisted extractions (HAE/UAE) of anthocyanins were optimized by response surface methodology. Five organic acids, the alpha-, gamma-, and delta-tocopherol isoforms, and twenty-five fatty acids (36.8 % oleic acid) were identified, as well as a phenolic profile composed of ellagitannin...