34 documents found, page 1 of 4
Unlocking Nature’s Anti-Aging Secrets: The Potential of Natural Mineral Waters ...
Gama, Ana Rita; Gomes, Carolina P.; Caetano, Cátia; Oliveira, Ana Sofia; Rolo, Joana; Barros, Lillian; Plasencia, Paula; Garcia, JulianaSkin aging is influenced by intrinsic and extrinsic factors, leading to structural changes in the skin. Current anti-aging cosmetic trends emphasize innovative natural ingredients, including plant extracts, thermal waters, and botanical hydrolats. This work aims to develop six natural anti-aging cosmetics (two serums, two day creams, and two night creams) with innovative and non-irritating profiles. The rationa...
Optimizing ultrasound-assisted extraction for enhanced yield of bioactive compo...
Plasencia, Paula; Carocho, Márcio; Finimundy, Tiane C.; Calhelha, Ricardo C.; Molina, Adriana K.; Pires, Tânia C.S.P.; Barreiro, FilomenaDue to the high nutritional value of berries, their extensive production has led to the accumulation of bioresidues. To leverage these residues, the distinct chemical composition, and functional properties of the leaves and other aerial parts can be used to produce high-value ingredients for cosmetics. Ultrasound-assisted extraction (UAE) is considered simple, fast, efficient, and more affordable than other tec...
Natural Mineral Water–Plant Extract Combinations as Potential Anti-Aging Ingred...
Gomes, Carolina P.; Oliveira, Ana S.; Rolo, Joana; Silveira, Tayse F. F. da; Palmeira de Oliveira, Rita; Alves, Maria José; Plasencia, PaulaNatural mineral waters (NMWs) and plant extracts have long been valued for their therapeutic properties and skin benefits. This study investigated, in vitro, the role of five Portuguese NMWs (A-E), combined with plant extracts from five species (Ficus carica L., Rubus idaeus L., Vaccinium myrtillus, Cistus ladanifer and Thymus x citriodorus) as bioactive ingredients. Antioxidant capacity was assessed using the ...
Extraction of Bioactive Compounds from Rubus Idaeus Bioresidues: A Full Screeni...
Plasencia, Paula; Finimundy, Tiane C.; Carocho, Márcio; Calhelha, Ricardo C.; Añibarro-Ortega, Mikel; Pires, Tânia C.S.P.; Barreiro, FilomenaPurpose Rubus idaeus cultivation has boosted productivity due to its high nutritional value. In consequence, waste produc- tion increased. The discarded biomass, including leaves and aerial components, can be transformed into valuable functional ingredients for industrial applications, such as cosmetics. Studying their bioactivity potential is highly relevant. Methods According to the present idea, the research...
Response surface methodology applied to ultrasound-assisted extraction of raspb...
Plasencia, Paula; Carocho, Márcio; Heleno, Sandrina A.; Finimundy, Tiane C.; Barreiro, M.F.; García, Pablo A.; Barros, LillianDue to their high nutritional value, berries production has increased, but this inevitably leads to the accumulation of bioresidues. To prevent this, leaves and other aerial components of berry plants can be converted into valuable ingredients for cosmetics applications due to their unique chemical composition and functional properties. Ultrasound-assisted extraction methodology is an efficient technique to obt...
Determinação da resistência à compressão do betão aplicado em pilares e vigas
Morais, Hermínia; Plasencia, PaulaParecer para estimar a resistência à compressão simples em pilares e vigas para betão armado numa estrutura construída há aproximadamente 50 anos, com base nos resultados dos ensaios à compressão de carotes cilíndricas de betão, determinação do teor de cloretos e determinação da profundidade de carbonatação pelo método da fenolftaleína.
Saponin-based natural nanoemulsions as alpha-tocopherol delivery systems for de...
Schreiner, Tatiana B.; Santamaria-Echart, Arantzazu; Colucci, Giovana; Plasencia, Paula; Costa, Patrícia Santos; Dias, Madalena M.; Pinho, SimãoNanoemulsions can be produced using simple methods and compounds from natural sources. They can increase water dispersibility and bioavailability and optimise active ingredient dispersion in particular skin layers. Lipophilic compounds of the vitamin E family (tocopherols and tocotrienols) are well-known for their high antioxidant activity and capacity to protect the skin from oxidative stress. In this context,...
Ethosomes: an approach for bioactive plant extract preservation envisaging cosm...
Plasencia, Paula; Santamaria-Echart, Arantzazu; Heleno, S.A.; Colucci, Giovana; Garcia, Pablo; Barros, Lillian; Barreiro, FilomenaThe present work is focused on upgrading the commercial potential of berry crop by-products by encapsulating them into liposomes to preserve their bioactivity. The extracts have been obtained with an ethanol-water mixture using ultrasound-assisted extraction, and the most promising ones were encapsulated in ethosome system. To achieve this goal, ethosomes were prepared using the cold method. Ethosomal suspensio...
Recovery of high valuable bioactive molecules from Vaccinium myrtillus L. biore...
Plasencia, Paula; Heleno, Sandrina A.; Finimundy, Tiane C.; Carocho, Márcio; Calhelha, Ricardo C.; Añibarro-Ortega, Mikel; Alves, Maria JoséPurpose The interest in using bioresidues produced by the agri-food industry is increasingly intrinsic to the world economy. As such, researchers started to look for new ways to enhance its use, developing innovations to transform these residues into high-value raw materials with industrial application, promoting the circular economy concept. Methods Therefore, pruning residues from the production of Vaccinium ...
Saponin-based natural nanoemulsions as alpha-tocopherol delivery systems for de...
Schreiner, Tatiana B.; Santamaria-Echart, Arantzazu; Colucci, Giovana; Plasencia, Paula; Costa, Patrícia Santos; Dias, Madalena M.; Pinho, Simão P.Nanoemulsions can be produced using simple methods and compounds from natural sources. They can increase water dispersibility and bioavailability and optimise active ingredient dispersion in particular skin layers. Lipophilic compounds of the vitamin E family (tocopherols and tocotrienols) are well-known for their high antioxidant activity and capacity to protect the skin from oxidative stress. In this context,...