13 documents found, page 1 of 2

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...

Novel Oxygen- and Curcumin-Laden Ionic Liquid@Silica Nanocapsules for Enhanced ...

The efficiency of photodynamic therapy is often limited by the scarcity of oxygen at the target site. To address this problem, this work proposes the development of a new nanosystem for antimicrobial photodynamic therapy applications (aPDT) where the natural-origin photosensitizer curcumin (CUR) is immersed in an oxygen-rich environment. Inspired by the perfluorocarbon-based photosensitizer/O2 nanocarriers repo...

Transcriptome analysis reveals the high ribosomal inhibitory action of 1,4-naph...

The root-knot nematode (RKN) Meloidogyne luci presents a threat to the production of several important crops. This nematode species was added to the European Plant Protection Organization Alert list in 2017. The scarce availability of efficient nematicides to control RKN and the phasing out of nematicides from the market have intensified the search for alternatives, such as phytochemicals with bionematicidal pr...

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...

Biodegradable film production from agroforestry and fishery residues with activ...

This paper is dedicated to the memory of A. T. Portugal, the University of Coimbra leader of Multibiorefinery project, for his partnership and commitment; An increasing interest in food packaging materials without environmental impact and able to improve shelf life has emerged in the last decade. The aim of this work was to produce biodegradable films from agroforestry (pine stumps) and fishery (chitosan) resid...

Using High-Pressure Technology to Develop Antioxidant-Rich Extracts from Bravo ...

Bravo de Esmolfe (BE) is a traditional Portuguese apple highly appreciated by consumers due to its peculiar flavor and aroma. This apple contains higher concentration of phenolic compounds than other cultivars and is thus considered a rich source of antioxidants. Its sensorial and functional properties have attracted farmers' associations to increase BE production. However, a large quantity of apples is wasted ...

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