Encontrados 42 documentos, a visualizar página 1 de 5
Pyridyl-functionalized and surface molecularly imprinted cellulose particles to...
Almeida, Ayssata Patrícia da Costa Leocádia Vaz; Gaspar, Rita M.; Ferreira-Dias, Suzana; Costa, Mário Rui; Dias, RolandoHybrid particles consisting of a cellulose core and a 4-vinylpyridine-based cross-linked shell were synthesized inthe presence of the quercetin imprinting template by surface initiated atom transfer radical polymerization (ATRP). The modification of cellulose with the introduction of pyridyl moieties was demonstrated by FTIR, SEM, surface area measurement and quantification of nitrogen in the hybrid particles b...
Potential of Marine Biomolecules: Advances in Extraction and Applications of Pr...
Sousa, Gabriela; Ferreira-Dias, Suzana; Tecelão, Carla; Alves, Vítor D.Oceans are increasingly viewed as a new frontier for economic development, contributing to the bridge between food industry, sea bioeconomy, and health. Nowadays, oceans are under attention as a strategy for creating opportunities and driving innovation, and their vital importance will become even more evident in the years to come. Therefore, it is crucial to study oceans under a holistic approach, taking the m...
How the “Olive Oil Polyphenols” Health Claim Depends on Anthracnose and Olive F...
Peres, Fátima; Gouveia, Cecília; Vitorino, Conceição; Oliveira, Helena; Ferreira-Dias, SuzanaOlive anthracnose, caused by Colletotrichum fungi, and the olive fruit fly Bactrocera olea are, respectively, the most important fungal disease and pest affecting olive fruits worldwide, leading to detrimental effects on the yield and quality of fruits and olive oil. This study focuses on the content of hydroxytyrosol (HYT) and its derivatives (the “olive oil polyphenols” health claim) in olive oils extracted f...
Production of Human Milk Fat Substitutes by Lipase-Catalyzed Acidolysis: Immobi...
Soares, Cleide M. F.; Barbosa, Milson S.; Santos, Samuel B.; Mattedi, Silvana; Lima, Álvaro S.; Pereira, Matheus M.; Tecelão, CarlaHuman milk fat (HMF) triacylglycerols (TAGs) mainly contain palmitic acid esterified at the sn-2 position while oleic and other unsaturated fatty acids are located at positions sn-1,3. This study aimed at the production of HMF substitutes (HMFS) by lipase-catalyzed acidolysis of tripalmitin with oleic acid, in a solvent-free medium. Burkholderia cepacia lipase (BCL) was immobilized in silica (prepared with prot...
Ultrasound assisted coextraction of Cornicabra Olives and Thyme to obtain flavo...
Peres, Fátima; Marques, Madalena Pinho; Mourato, Miguel; Martins, Luisa L.; Ferreira-Dias, SuzanaFlavoring olive oils is a new trend in consumer preferences, and different enrichment techniques can be used. Coextraction of olives with a flavoring agent is an option for obtaining a flavored product without the need for further operations. Moreover, ultrasound (US) assisted extraction is an emergent technology able to increase extractability. Combining US and coextraction, it is possible to obtain new produc...
Continuous production of dietetic structured lipids using crude acidic Olive po...
Souza-Gonçalves, Joana; Fialho, Arsénio; Soares, Cleide M. F.; Osório, Natália M.; Ferreira-Dias, SuzanaCrude olive pomace oil (OPO) is a by-product of olive oil extraction. In this study, lowcalorie structured triacylglycerols (TAGs) were produced by acidolysis of crude OPO with mediumchain fatty acids (caprylic, C8:0; capric, C10:0) or interesterification with their ethyl ester forms (C8EE, C10EE). These new TAGs present long-chain fatty acids (L) at position sn-2 and medium-chain fatty acids (M) at positions s...
Production of human milk fat substitutes by lipase-catalyzed acidolysis: immobi...
Soares, Cleide M. F.; Barbosa, Milson S.; Santos, Samuel B.; Mattedi, Silvana; Lima, Álvaro S.; Pereira, Matheus M.; Tecelão, CarlaHuman milk fat (HMF) triacylglycerols (TAGs) mainly contain palmitic acid esterified at the sn-2 position while oleic and other unsaturated fatty acids are located at positions sn-1,3. This study aimed at the production of HMF substitutes (HMFS) by lipase-catalyzed acidolysis of tripalmitin with oleic acid, in a solvent-free medium. Burkholderia cepacia lipase (BCL) was immobilized in silica (prepared with prot...
Optimal conditions for biomass and recombinant glycerol kinase production using...
Aizemberg, Raquel [UNESP]; Terrazas, Werner D.M. [UNESP]; Ferreira-Dias, Suzana; Valentini, Sandro R. [UNESP]; Gattás, Edwil A.L. [UNESP]Made available in DSpace on 2022-04-28T18:57:13Z (GMT). No. of bitstreams: 0 Previous issue date: 2011-07-01; The extracellular glycerol kinase gene from Saccharomyces cerevisiae (GUT1) was cloned into the expression vector pPICZα A and integrated into the genome of the methylotrophic yeast Pichia pastoris X-33. The presence of the GUT1 insert was confirmed by PCR analysis. Four clones were selected and the fun...
Enrichment of sunflower oil with ultrasound-assisted extracted bioactive compou...
Sousa, Gabriela; Alves, Mariana I.; Neves, Marta; Tecelão, Carla; Ferreira-Dias, SuzanaCrithmum maritimum L., or sea fennel, is an edible halophyte plant, rich in phenolic compounds with antioxidant and antimicrobial activities, that naturally grows in Mediterranean coasts. This study aims to incorporate bioactive compounds extracted from lyophilized Crithmum maritimum to sunflower oil assisted by ultrasounds (UAE), to improve its biological value and oxidative stability. UAE conditions were opti...
Enrichment of Sunflower Oil with Ultrasound-Assisted Extracted Bioactive Compou...
Sousa, Gabriela; Alves, Mariana I.; Neves, Marta; Tecelão, Carla; Ferreira-Dias, SuzanaCrithmum maritimum L., or sea fennel, is an edible halophyte plant, rich in phenolic compounds with antioxidant and antimicrobial activities, that naturally grows in Mediterranean coasts. This study aims to incorporate bioactive compounds extracted from lyophilized Crithmum maritimum to sunflower oil assisted by ultrasounds (UAE), to improve its biological value and oxidative stability. UAE conditions were opti...