Encontrados 14 documentos, a visualizar página 1 de 2
Lignin–Quercetin Hybrid Colloidal Particles as Sustainable Pickering Emulsifier...
Oliveira, Barbara Miqueletti de; Colucci, Giovana; Schreiner, Tatiana B.; Preegel, Gert; Silva, Lucimara Lopes da; Santamaria-Echart, ArantzazuLignin, the second-most-abundant polymer on Earth, has attracted attention for its value-added applications. Colloidal lignin particles can overcome handling and compatibility issues, offer antioxidant, antimicrobial, and UV-protective properties, and serve as Pickering stabilizers. Plant extracts rich in bioactive compounds, such as polyphenols and flavonoids (e.g., quercetin), can further enhance lignin-based...
Bacterial cellulose biosynthesis in the presence of raw moist olive pomace: A g...
Crugeira, Pedro; Khelifa, Halima; Barreira, Luísa; Halla, Noureddine; Barreiro, Filomena; Rodrigues, Paula; Peres, António M.; Schreiner, Tatiana B.In this study, the biosynthesis of bacterial cellulose (BC) by Komagataeibacter intermedius strain isolated from Kombucha tea in the presence of raw moist olive pomace (MOP) (concentration up to 40 % in the fermentation media) was studied. The BC membranes were characterized by their antioxidant activity, structural character- istics, crystallinity, thermal stability, and mechanical behavior. Using raw MOP acti...
Formation and stabilisation of oil-in-water nanoemulsions using binary emulsifi...
Schreiner, Tatiana B.; Santamaria-Echart, Arantzazu; Peres, António M.; Dias, Madalena M.; Pinho, Simão; Barreiro, FilomenaEmulsifiers are used in many industrial fields, with the natural origin ones gaining increasing relevance. Identifying diversified sources as natural emulsifiers is a pertinent topic for sustainability principles
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,...
Study of binary mixtures of Tribulus terrestris extract and Quillaja bark sapon...
Schreiner, Tatiana B.; Santamaria-Echart, Arantzazu; Peres, António M.; Dias, Madalena M.; Pinho, Simão; Barreiro, M.F.Several industrial fields use emulsifiers in their products, with the ones of natural origin gaining increasing relevance. Identifying and using diversified sources for their extraction is a pertinent topic regarding sustainability principles, biodiversity preservation, or cost rationalization. This is the case of Quillaja bark saponin (QS), for which saponin-rich extracts, for example, Tribulus terrestris (TT)...
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,...
Formation and stabilisation of oil-in-water nanoemulsions using binary emulsifi...
Schreiner, Tatiana B.; Santamaria-Echart, Arantzazu; Peres, António M.; Dias, Madalena M.; Pinho, Simão; Barreiro, FilomenaEmulsifiers are used in many industrial fields, with the natural origin ones gaining increasing relevance. Identifying diversified sources as natural emulsifiers is a pertinent topic for sustainability principles. Saponin-rich extract Tribulus terrestris (TT) was evaluated as a viable alternative to Quillaja bark saponin (QS). An experimental design using binary emulsifier mixtures of TT with QS was carried out...
Saponins as natural emulsifiers for nanoemulsions
Schreiner, Tatiana B.; Dias, Madalena M.; Barreiro, M.F.; Pinho, SimãoThe awareness of sustainability approaches has focused attention on replacing synthetic emulsifiers with natural alternatives when formulating nanoemulsions. In this context, a comprehensive review of the different types of saponins being successfully used to form and stabilize nanoemulsions is presented, highlighting the most common natural sources and biosynthetic routes. Processes for their extraction and pu...
Evaluation of saponin-rich extracts as natural alternative emulsifiers: A compa...
Schreiner, Tatiana B.; Colucci, Giovana; Santamaria-Echart, Arantzazu; Fernandes, Isabel P.; Dias, Madalena M.; Pinho, Simão; Barreiro, M.F.Due to synthetic surfactants' environmental impact, their replacement by natural alternatives has gained relevance, with saponins emerging as sustainable approaches. In this work, three saponin-rich extracts from different sources (Tribulus terrestris (TT), Trigonella foenum-graecum (FG), and Ruscus aculeatus (RA)) were tested as emulsifiers, and their performance compared with Quillaja Bark saponin (PS). Chara...
Formulation and optimization of nanoemulsions using the natural surfactant sapo...
Schreiner, Tatiana B.; Santamaria-Echart, Arantzazu; Ribeiro, Andreia; Peres, António M.; Dias, Madalena M.; Pinho, Simão; Barreiro, M.F.Replacing synthetic surfactants by natural alternatives when formulating nanoemulsions has gained attention as a sustainable approach. In this context, nanoemulsions based on sweet almond oil and stabilized by saponin from Quillaja bark with glycerol as cosurfactant were prepared by the high-pressure homogenization method. The e ects of oil/water (O/W) ratio, total surfactant amount, and saponin/glycerol ratio ...