33 documents found, page 1 of 4

Abieta-7,13-Diene in Nematode-Infected Pinewood Pinus pinaster Branch Extracts:...

The oleoresin and volatile fraction produced by conifers, such as Pinus pinaster, play a crucial role in plant defence, acting as precursors to resin acids and adapting in response to environmental stress or pathogen attacks. Abietadiene (abieta-7,13-diene), the biosynthetic precursor to abietic acid, has been identified as the most abundant compound in extracts from pinewood nematode (PWN)-infected P. pinaster...

Fortified chocolate mousse with powder and extract from Moringa oleifera leaves...

This study focuses on the characterisation and incorporation of Moringa oleifera leaf powder (MOP) from Luanda (Angola) and its extract (MOE) in fortified chocolate mousse. Dark green (DG) leaves presented superior nutritional values compared to other leaves. DG contained a higher concentration of mineral salts (10 ± 1 mg/100 g of dry leaves), phenolic compounds (267 ± 4 mg GAE/g), vitamins (1.9 ± 0.2 mg/g of d...

Chitosan-xanthan gum PEC-based aerogels: A chemically stable PEC in scCO2

An innovative aerogel obtained from a chitosan/xanthan gum polyelectrolyte complex (PEC) was developed in this work from the screening of thirteen different combinations of natural polyelectrolytes: two positively charged biopolymers (chitosan and gelatin A), six negatively-charged biopolymers (pectin, iota-carrageenan, collagen, xanthan gum, alginate and modified galactomannan), and a neutral polymer (guar gum...

Environmentally-safe scCO2 P. pinaster branches extracts: Composition and prope...

Considering the vast array of compounds that plants manufacture that help protect them against insects’ attacks, plant raw materials are a potential source of future insecticides/larvicides. In this work, volatiles from maritime pine (Pinus pinaster) branches, a pruning residue, were extracted by supercritical carbon dioxide (scCO2), and also by hydrodistillation for comparison purposes. The volatiles naturally...

Porous poly(ε-caprolactone) implants: A novel strategy for efficient intraocula...

This work reports the development of porous poly (ε-caprolactone) (PCL)-based intraocular implants, prepared by green supercritical carbon dioxide (scCO2) foaming/mixing method (SFM), to produce implants that degrade faster than typical slow-degrading PCL-based implants. The higher porosities and surface areas of these implants led to faster degradation rates at in vitro accelerated alkaline conditions than low...

Osteogenic poly(ε-caprolactone)/poloxamine homogeneous blends prepared by super...

Homogeneous poly(ε-caprolactone) (PCL) and poloxamines (PLXs) porous blends were prepared using a supercritical carbon dioxide-assisted foaming/mixing (SFM) approach aiming to obtain cytocompatible implantable materials presenting tunable morphologies, bioerosion rates, bioactive molecules release and osteogenic features. Pure PCL, pure PLXs (T908 and T1107 varieties) and three distinct PCL:PLX 75:25, 50:50, 25...

Solubility of all-trans retinoic acid in supercritical carbon dioxide

Improving cell adhesion: development of a biosensor for cell behaviour monitori...

The surface properties of a material in combination with the mechanical properties are responsible for the material performance in a biological environment as well as the behaviour of the cells which contact with the material. Surface properties such as chemical, physical, biological play an important role in the biomaterials filed. In this work, the surface of a thermoplastic polyurethane film (Elastollan(®)11...

Effects of Two Phosphonium-Type Ionic Liquids on the Rheological and Thermomech...

Chitosan-based dressings loaded with neurotensin—an efficient strategy to impro...

One important complication of diabetes mellitus is chronic, non-healing diabetic foot ulcers (DFUs). This study aims to develop and use dressings based on chitosan derivatives for the sustained delivery of neurotensin (NT), a neuropeptide that acts as an inflammatory modulator in wound healing. Three different derivatives, namely N-carboxymethyl chitosan, 5-methyl pyrrolidinone chitosan (MPC) and N-succinyl chi...