45 documents found, page 1 of 5
Gelatin-based nanocomposite films activated by double emulsion loaded with “Pit...
Tessaro, Larissa; Gonçalves, Raquel Filipa Silva; Martins, Joana T.; Pinheiro, Ana C.; Vicente, António A.; Sobral, Paulo J. A.The main aim of this study was to carry out an in vitro digestion of gelatin-based films and nanocomposite films activated with Pitanga (Eugenia uniflora L.) leaf extract (PLE) encapsulated in a W/O/W double emulsion. Also, the effects of encapsulation and addition of crystalline nanocellulose on PLE bioaccessibility, and on Caco-2 cells viability, after in vitro digestion, were evaluated. The free PLE, W/O (SE...
Valorization of cork stoppers, coffee-grounds and walnut shells in the developm...
Cruz, Rui; Rainer, Bernhard; Wagner, Isabella; Krauter, Victoria; Janalíková, Magda; Vicente, António A.; Vieira, Jorge M.The development of sustainable materials from the valorization of waste is a good alternative to reducing the negative environmental impact of plastic packaging. The objectives of this study were to develop and characterize pectin-based composite films incorporated with cork or cork with either coffee grounds or walnut shells, as well as to test the films’ genotoxicity, antioxidant properties, and biodegradatio...
Comparison of different pretreatment processes envisaging the potential use of ...
Marques, Fabiana; Pereira, Francisco; Machado, Luís; Martins, Joana T.; Pereira, Ricardo N.; Costa, Monya; Genisheva, Zlatina; Pereira, HugoA significant fraction of the food produced worldwide is currently lost or wasted throughout the supply chain, squandering natural and economic resources. Food waste valorization will be an important necessity in the coming years. This work investigates the ability of food waste to serve as a viable nutritional substrate for the heterotrophic growth of Chlorella vulgaris. The impact of different pretreatments o...
Combining high pressure and electric fields towards nannochloropsis oculata eic...
Sousa, Sérgio; Carvalho, Ana P.; Pinto, Carlos A.; Amaral, Renata A.; Saraiva, Jorge A.; Pereira, Ricardo N.; Vicente, António A.; Freitas, Ana C.Nannochloropsis oculata is naturally rich in eicosapentaenoic acid (EPA). To turn this microalga into an economically viable source for commercial applications, extraction efficiency must be achieved. Pursuing this goal, emerging technologies such as high hydrostatic pressure (HHP) and moderate electric fields (MEF) were tested, aiming to increase EPA accessibility and subsequent extraction yields. The innovati...
Assessing the in vitro digestion of lactoferrin-curcumin nanoparticles using th...
Madalena, Daniel A.; Araújo, João F.; Ramos, Óscar L.; Vicente, António A.; Pinheiro, Ana C.Nanosized delivery systems have been the subject of research and discussion in the scientific community due to their unique properties and functionality. However, studies reporting the behaviour of nanodelivery systems under dynamic in vitro digestion conditions are still very scarce. To address this gap, this study aims to assess the dynamic in vitro gastric digestion of lactoferrin/curcumin nanoparticles in t...
High-throughput micro-plate fluorescence quenching for screening the binding of...
Adalsteinsson, Heidar Már; Pinto, Lavínia; Rodrigues, Diana Isabel Gomes; Domingues, Lucília; Vicente, António A.; Aguiar, Tatiana QuintaFilamentous fungi, which commonly contaminate food and animal feed, produce toxic metabolites called mycotoxins. Legal limits on their maximum levels in food require food producers to carry out highly specific analytical tests for mycotoxins, such as Ochratoxin A (OTA), patulin (PAT) and zearalenone (ZEN). Serum albumins are known to bind some mycotoxins, presenting an opportunity for the development of novel c...
Novas tendências em embalagens alimentares funcionalidades e materiais
Vicente, António A.Motivada pela crescente preocupação com a qualidade e a segurança dos alimentos, a utilização de embalagens alimentares é uma prática de há muito enraizada na sociedade. As funções solicitadas aos materiais utilizados para produzir embalagens alimentares estão relacionadas com as tendências de consumo e com as evoluções tecnológicas adotadas ao longo dos anos pela indústria alimentar e pela distribuição, o que ...
Recent advances in oral delivery systems of resveratrol: foreseeing their use i...
Silva, Pedro Miguel Peixoto; Gonçalves, Catarina; Pastrana, Lorenzo M.; Coimbra, Manuel A.; Vicente, António A.Herein, we review the current state-of-the-art on the use of micro- and nano-delivery systems, a possible solution to some of the drawbacks associated with the incorporation of resveratrol in foods. Specifically, we present an overview of a wide range of micro-nanostructures, namely, lipidic and polymeric, used for the delivery of resveratrol. Also, the gastrointestinal fate of resveratrol-loaded micro-nanostru...
Emerging challenges in assessing bio-based nanosystems’ behaviour under in vitr...
Madalena, Daniel; Fernandes, Jean; Avelar, Zita; Gonçalves, Raquel; Ramos, Óscar L.; Vicente, António A.; Pinheiro, Ana C.The current consumers’ demand for high quality food products together with the growing awareness regarding the link between health and nutrition has led to the development of novel food products with added functionality. Such functionality can be modulated by adding bio-based nanosystems that can improve the bioaccessibility of bioactive compounds and facilitate nutrient absorption. However, these functional pr...
Study of olive pomace antioxidant dietary fibre powder throughout gastrointesti...
Ribeiro, Tânia; Campos, Débora; Oliveira, Ana; Nunes, João; Vicente, António A.; Pintado, ManuelaPulp-enriched powder (POPP) was obtained from olive pomace solid fraction, a derived from the new value chain established for olive by-products. As a multifunctional powder, POPP retains several bioactive compounds (fatty acids, dietary fibre and phenolics) under potential synergic interaction, even more, reactive throughout the digestion. So, in this study, the potential multifunctionality of POPP was evaluate...