23 documents found, page 1 of 3
Active Low-Density Polyethylene-Based Films by Incorporating α-Tocopherol in th...
Azevedo, Ana G.; Barros, Carolina; Miranda, Sónia; Machado, A. V.; Carneiro, O. S.; Silva, Bruno; Andrade, Mariana A.; Vilarinho, FernandaIn this work, alpha-tocopherol (α-TOC) was encapsulated in poly(lactic acid) nanoparticles (PLA NPs) and added to low-density polyethylene (LDPE) films with the aim of producing an active film for food packaging applications. PLA NPs loaded with α-TOC were produced through nanoprecipitation and dried using two methods (freeze-dryer and oven). LDPE-based films with final polymeric matrix concentrations of 10 and...
Effect of pomegranate peels and extract in barrier, optical and mechanical prop...
Andrade, Mariana; Vilarinho, Fernanda; Rodrigues, Pedro; Barros, Carolina; Cruz, Vasco; Machado, Ana Vera; Barbosa, Cássia; Ramos, FernandoBeing more than 50 % of pomegranate (Punica granatum L.) constituted by non-edible parts, namely peels (50%) and seeds (10%), pomegranate is an excellent source of by-products. Its peels and seeds present excellent antioxidant and antimicrobial activities and a high content of phenolic compounds, namely ellagitannins. This work aimed to evaluate the mechanical and optical properties of two polylactic acid (PLA)...
Antioxidant and antimicrobial properties of PLA based active packaging with pom...
Andrade, Mariana; Rodrigues, Pedro; Barros, Carolina; Cruz, Vasco; Machado, Ana; Barbosa, Cássia; Coelho, Anabela; Furtado, Rosália; Correia, CristinaActive food packaging’ primary goal is to extend foodstuffs’ shelf life, through a dynamic and continuous interaction between the package and the packaged food. In an emission active packaging, the objective is the gradual release of antioxidant and/or antimicrobial compounds into the food surface, to delay the natural foods’ degradation. The active compounds can be extracted from several sources, such as aroma...
Extending beef meat shelf life: an approach using active food packaging with po...
Andrade, Mariana; Rodrigues, Pedro; Barros, Carolina; Cruz, Vasco; Machado, Ana; Barbosa, Cássia; Coelho, Anabela; Furtado, Rosália; Correia, CristinaMore than 50% of the pomegranate fruit (Punica granatum L.) is not considered edible, being composed by peels (50%) and seeds (10%). Pomegranate peels represent an excellent source of bioactive compounds with excellent antioxidant and antimicrobial activities due to the peels’ high content in phenolic compounds, specially punicalagin (A+B) and ellagic acid. The aim of the present study was to evaluate the poten...
Applying Cynara cardunculus L. leaf extracts to increase poultry meat shelf life
Barbosa, Cássia; Andrade, Mariana; Vilarinho, Fernanda; Sanches Silva, Ana; Fernando, Ana LuisaCardoon, Cynara cardunculus L. (Asteraceae), is a multipurpose crop. Its flower is used as vegetal rennet in the production of some cheeses, and its leaves, the main by-product generated, have excellent antioxidant and antimicrobial activities. These properties may be an asset in the food industry, as cardoons’ leaves may be used to delay lipid oxidation and microbial growth, thus prolonging foods’ shelf life. ...
Pla Films Loaded with Green Tea and Rosemary Polyphenolic Extracts as an Active...
Andrade, Mariana; Barbosa, Cássia; Cerqueira, Miguel; Azevedo, Ana Gabriela; Barros, Carolina; Machado, Ana Vera; Coelho, Anabela; Furtado, RosáliaAbstract: The antioxidant capacity and the phenolic compounds of extracts from Green Tea and Rosemary was determined. RE presented a higher antioxidant capacity and higher content of TPC and flavonoids than GTE. While the main phenolic compounds identified in RE were carnosic acid, carnosol and rosmarinic acid, in GTE were catechin, epigallocatechin gallate, epicatechin, rutin and gallic acid. Active PLA films ...
The influence of cultivated cardoon and globe artichoke ethanolic leaf extracts...
Barbosa, Cássia; Vilarinho, Fernanda; Andrade, Mariana; Sanches Silva, Ana; Fernando, Ana LuisaFood additives are commonly used to prolong the shelf life of food by slowing down natural deterioration. However, synthetic additives have raised health concerns despite the European Union's strict regulations. To address this issue, researchers are exploring natural sources of compounds that can be safely used as food additives. Extracts from plants and agro-industrial by-products, such as Cynara cardunculus ...
Extending poultry meat shelf life through the application of Cyanara cardunculu...
Barbosa, Cássia; Andrade, Mariana; Vilarinho, Fernanda; Sanches Silva, Ana; Fernando, Ana LuisaCynara cardunculus L. (Asteraceae), commonly named cardoon, is a multipurpose crop that includes three varieties, the globe artichoke (var. scolymus (L.) Fiori), the cultivated cardoon (var. altilis DC.), and the wild cardoon (var. sylvestris (Lamk) Fiori). Its flower is normally used as vegetal rennet in the production of some cheeses and its leaves, the main by-product generated, are known for its excellent a...
Exploring Cyanara cardunculus L. potential for the food industry: the antioxida...
Barbosa, Cássia; Andrade, Mariana; Vilarinho, Fernanda; Fernando, Ana Luisa; Sanches Silva, AnaCynara cardunculus L. (cardoon) is a versatile perennial crop indigenous to the Mediterranean region that has three botanical varieties including wild cardoon (var. sylvestris (Lamk) Fiori), cultivated cardoon (var. altilis DC.), and globe artichoke (var. scolymus (L.) Fiori). Cardoon is mostly renowned for its flower, which is used to coagulate milk in the production of soft cheeses, with the leaves serving as...
Mono and multilayer active films containing green tea to extend food shelf life
Vieira, Dalila M.; Andrade, Mariana; Vilarinho, Fernanda; Sanches Silva, Ana; Rodrigues, Pedro; Castro, M. Cidália; Machado, Ana VeraAn active packaging film made of one and two-layers structure based on low-density polyethylene (LDPE) was produced with the incorporation of green tea extract (GTE) at different amounts by blown film extrusion. Film structure, optical, mechanical, antioxidant and barrier properties were characterized. The films revealed homogeneous film surface, the presence of GTE increases the tensile properties, improves fr...