Consequences of Mixotrophy on Cell Energetic Metabolism in Revealed by Genetic Engineering and Metabolic Approaches.

Algae belonging to the genus are promising organisms for biotech purposes, being able to accumulate large amounts of lipid reserves. These organisms adapt to different trophic conditions, thriving in strict photoautotrophic conditions, as well as in the concomitant presence of light plus reduced external carbon as energy sources (mixotrophy). In this work, we investigated the mixotrophic responses of (formerly ).

Antibacterial Cellulose Nanopapers via Aminosilane Grafting in Supercritical Carbon Dioxide.

In this work, we present an innovative strategy for the grafting of an antibacterial agent onto nanocellulose materials in supercritical carbon dioxide (scCO). Dense cellulose nanofibril (CNF) nanopapers were prepared and subsequently functionalized in supercritical carbon dioxide with an aminosilane, -(6-aminohexyl)aminopropyltrimethoxysilane (AHA-P-TMS). Surface characterization (X-ray photoelectron spectroscopy, contact angle, ζ-potential analysis) evidenced the presence of the aminosilane.

Alternation of inverse problem approach and deep learning for lens-free microscopy image reconstruction.

A lens-free microscope is a simple imaging device performing in-line holographic measurements. In the absence of focusing optics, a reconstruction algorithm is used to retrieve the sample image by solving the inverse problem. This is usually performed by optimization algorithms relying on gradient computation.

Antimicrobial Cellulose Nanofibril Porous Materials Obtained by Supercritical Impregnation of Thymol.

This study presents the impregnation in supercritical carbon dioxide (scCO) of nanocellulose-based structures with thymol as a natural antimicrobial molecule to prepare bioactive, biosourced materials. First, cellulose nanofibrils (CNFs) were used to produce four types of materials (nanopapers, cryogels from water or -butyl alcohol suspensions, and aerogels) of increasing specific surface area up to 160 m·g, thanks to the use of different processes, namely, vacuum filtration, freeze-drying, and supercritical drying. Second, these CNF-based structures were impregnated with thymol in the scCO medium using a relatively low temperature and pressure of 40 °C and 100 bar during 1 h.

Multispectral total-variation reconstruction applied to lens-free microscopy.

Lens-free microscopy multispectral acquisitions are processed with an inverse problem approach: a multispectral total variation criterion is defined and minimized with the conjugate gradients method. Reconstruction results show that the method is efficient to recover the phase image of densely packed cells.