13 documents found, page 1 of 2

Bioactive potential of a grape stem blend: a sustainable approach to skin regen...

The European wine industry is embracing sustainability through circular economy principles, particularly by valorizing by-products, such as grape stems. Grape stems are rich in phenolic compounds with recognized health benefits. This study investigates the bioactive potential of molecules extracted from a blend of grape stems (GS blend extract). The GS blend extract was chemically characterized in terms of tota...

Grape stems as sources of tryptophan and selenium: functional properties and an...

The Douro Demarcated Region's winery industry produces million tonnes of by-products annually, making their reuse essential to minimize environmental impact. Grape stems, rich in bioactive compounds and nutrients, have demonstrated potential health benefits. This study analysed four red grape stems from the Douro region to assess their nutritional value and potential health benefit. Tryptophan, selenium, and ph...

Stable and functional cosmetic creams enriched with grape stem extract: a susta...

The growing demand for sustainable and effective cosmetic ingredients has prompted renewed interest in winemaking by-products. Among these, grape stem (GS) extract remains relatively underexplored despite its rich content of phenolic compounds distinct from those found in more commonly studied grape seeds or skins. This study validates the potential of GS extract as a novel bioactive component in cosmetic cream...

Phytochemical and biotechnological valorisation of winery by-products for prost...

Overview of polyphenolic composition and related biological activities of grape...

Grape stems, or stalks, are lignocellulosic by-products removed during the destemming process to reduce astringency in wine production. These by-products are a notable source of minerals and polyphenolic compounds, such as phenolic acids, stilbenes, proanthocyanidins and catechin derivatives, flavonols, flavones, and anthocyanins. These bioactive compounds have been associated with several beneficial effects on...

Solvent-driven extraction of bioactive compounds from propolis for application ...

Propolis is a resinous substance collected by honeybees from plant exudates and enriched with beeswax, pollen, and enzymes. Known for its antioxidant, antimicrobial, and anti-aging properties, it has attracted interest for applications in food, nutraceutical, and cosmetic industries. In this work, Portuguese propolis from the Guarda region was characterized to evaluate how different solvents influence extractio...

Exploring the therapeutic potential of Quercus ilex acorn extract in papillomav...

Background and Aim: Papillomaviruses (PVs) infections have been documented in numerous animal species across different regions worldwide. They often exert significant impacts on animal health and livestock production. Scientists have studied natural products for over half a century due to their diverse chemical composition, acknowledging their value in fighting cancer. Acorns (Quercus ilex) are believed to have...

Exploring the therapeutic potential of Quercus ilex acorn extract in papillomav...

Papillomaviruses (PVs) infections have been documented in numerous animal species across different regions worldwide. They often exert significant impacts on animal health and livestock production. Scientists have studied natural products for over half a century due to their diverse chemical composition, acknowledging their value in fighting cancer. Acorns (Quercus ilex) are believed to have several unexplored ...

From Waste to Resource: Compositional Analysis of Olive Cake’s Fatty Acids, Nut...

The olive oil industry, recognised for its beneficial products for health and food culture, generates a significant amount of by-products that, if not appropriately managed, can pose considerable environmental challenges. This study examined six olive cakes (OC) from the Trás-os-Montes and Alto Douro regions, collected on different dates and mills: two obtained by pressing (COC), two by centrifugation (TPOC), i...

Exploring the Variability in Phenolic Compounds and Antioxidant Capacity in Oli...

The olive oil industry generates large volumes of by-products, creating notable environmental and economic concerns. Among these, olive cake (OC)—a primary by-product of olive oil extraction—stands out due to its high content of bioactive compounds and potential for value-added recycling. This study focused on characterizing six OC samples from the Trás-os-Montes and Alto Douro regions, collected at different p...