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Antioxidant and Antimicrobial Activity Characteristics of Seven Biopreparations...

Simões, Joana; Peleja, Ana; Neves, Cláudia; de Vasconcelos Teixeira Aguiar da Costa, Daniela; de Paiva Martins Esteves Correia, Helena Maria

Agroecological transition is a major societal challenge and it is urgent to support technical solutions to answer farmers demand towards the necessary changes. The project RESTORE - biopReparados Em SisTemas prOdução agRoEcológicos aimed to study and validate the production, conservation, and use of seven biopreparations by characterizing and testing them in lettuce nurseries. The biopreparations used include p...


Influence of Different Agro-Food Waste on Ammonia and Greenhouse Gas Emissions ...

Pereira, José; Costa, Telma; Figueiredo, Vítor; Marques, Francisco; Perdigão, Adelaide; Brás, Isabel; Ferreira Silva, Maria Elisabete

Composting is one of the best organic waste management techniques, with zero waste; however, it generates environmental impacts. The objective of this study was to evaluate the emission of NH3, N2O, CO2, and CH4 from the composting of olive, elderberry, and grape agro-food waste. The experiment was carried out using reactors receiving straw as control and three treatments receiving mixtures of straw and olive, ...


Towards the Valorization of Elderberry By-Product: Recovery and Use of Natural ...

Neves, Cláudia M. B.; Fogeiro, Élia; Cardoso, Susana M.; Gonçalves, Fernando Jorge; Pinto, António; Ferreira Wessel, Dulcineia

One of the food industry’s greatest challenges is to find natural ingredients capable of conferring antioxidant and color properties. In addition, the agri-food industry generates by-products that are often treated as waste, despite their abundance of phytochemicals that can be recovered and used as food ingredients. This study explores the potential of elderberry pomace, an industrial by-product of juice proce...


Mitigating Ammonia and Greenhouse Gas Emissions from Stored Pig Slurry Using Ch...

Pereira, José L.S.; Perdigão, Adelaide; Marques, Francisco; Ferreira Wessel, Dulcineia; Trindade, Henrique; Fangueiro, David

Slurry storage is a significant source of NH3 and greenhouse gas (GHG) emissions. The aim of this laboratory study was to assess the effects of different chemical additives and biochars on the emissions of NH3, N2O, CO2, and CH4 during the short-term storage of pig slurry. The experiment was performed using Kilner jars filled with raw slurry as control and six treatment additives (5% w/w): acidified slurry, alk...


Effects of the Addition of Different Additives before Mechanical Separation of ...

Pereira, José L.S.; Perdigão, Adelaide; Tavares, Ana; Silva, Maria E. F.; Brás, Isabel; Ferreira Wessel, Dulcineia

The treatment of animal slurry is used to improve management on a farm scale. The aim of this laboratory study was to assess the effects of the addition of the additives biochar, alum and clinoptilolite before the mechanical separation of whole pig slurry (WS) on the characteristics and emission of NH3 , N2O, CO2 and CH4 from solid (SF) and liquid fractions (LF). The additives were mixed with WS (5% w/w), follo...


Avaliação de impacte ambiental da gestão de resíduos da produção de uma bancada...

Silva, Luiza; Ferreira Silva, Maria Elisabete; Brás, Isabel; Domingos, Idalina; Ferreira Wessel, Dulcineia; Ferreira, José

Introduction: Consumerism has led to an increase in environmental problems, and for this reason, sustainable solutions must be the priority when designing new products or services. Life Cycle Assessment (LCA) is one of the most important analytical tools available for choosing the best decision when it comes to sustainability. Objective: The focus of this study was to apply an LCA to the management of wastes fr...


A Cradle-to-Grave Life Cycle Assessment Study on a New Countertop Material

Silva, Luiza; Silva, Maria; Brás, Isabel; Domingos, Idalina; Ferreira Wessel, Dulcineia; Ferreira, José

The life cycle of furniture products has been decreased in the last years as a consequence of the continuous improvement of people’s housing conditions. This behavior increases the waste amount in an urban area. The focus of this study was developing a Life Cycle Assessment (LCA) (cradle-to-grave) of a new countertop product. Two scenarios for countertop waste management were proposed, one considering landfilli...


Influence of cardoon flower (cynara cardunculus L.) and flock lactation stage i...

Fogeiro, Élia; Barracosa, Paulo; Oliveira, Jorge; Ferreira Wessel, Dulcineia

Serra da Estrela (SE) cheese is one of the most appreciated Portuguese cheeses, being produced only from raw ewe's milk, cardoon flower and salt. Cardoon takes part in two important processes in cheese production-coagulation and proteolysis-contributing to its unique features. Furthermore, milk chemical characteristics change during the milking season, being another factor that account for the high variability ...


Levantamento e análise de dados de subprodutos provenientes de actividade hortí...

Brito, Manuel; Ferreira, Ana Catarina; Coelho, Catarina; Ferreira Wessel, Dulcineia


Antioxidant Properties of Bee Products of Plant- Origin Part 2. Propolis and Po...

Fernandes, Pedro; Ferreira, Sónia; Fonte, Alice; Ferreira Wessel, Dulcineia; Cardoso, Susana

Over the last years, the hive products such as propolis and pollen have been highlighted due to their potential health benefits, including antioxidant abilities that have been correlated with their content in phenolic compounds. Regardless of the several factors that may affect propolis and pollen antioxidant activity, these products have been shown to possess, either through the use of in vitro or in vivo mode...


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