Biorefinery of Lignocellulosic and Marine Resources for Obtaining Active PVA/Chitosan/Phenol Films for Application in Intelligent Food Packaging.

This study focuses on the extraction of phenolic compounds from the fermentation of and . The main goal was to synthesize phenol/chitosan microspheres and PVA films and characterized using FTIR, TGA, DSC, SEM, and mechanical tests to evaluate their physical, chemical, and mechanical properties for antimicrobial packaging applications. Homogeneous chitosan microspheres loaded with lignin-derived phenols were obtained, showing controlled release of antimicrobial compounds.

Developing High-Coloring Natural Systems Using Double Emulsions with L. Extract to Meet High-Performance Requirements.

L. extract is attracting interest as a natural colorant alternative. However, the presence of anthocyanins (ACNs), which are sensitive to pH changes, limits its application.

Solid dispersions as effective curcumin vehicles to obtain k-carrageenan functional films for olive oil preservation.

Synthetic packaging materials offer cost efficiency and performance but pose environmental risks. This study explores sustainable alternatives by developing k-carrageenan (KC) films functionalized with curcumin, using solid dispersions (SDs) to improve curcumin's compatibility, addressing the challenge of incorporating hydrophobic functionalities into hydrophilic film matrices. Films with varying curcumin content (1-20 wt%; KC1-KC20) were compared to a base film without curcumin (KC0) regarding water solubility, vapor permeability, water contact angle, and tensile properties.

Purification and characterization of a protease produced by submerged fermentation: Ultrasound-enhanced collagenolytic protease from Streptomyces parvulus.

Proteases are a large group of enzymes in high demand due to their wide and different biotechnological applications mainly in the biomedical field. Ultrasound (US) has been used successfully in several Bioprocesses in biotechnology, such as in the upregulation of enzymatic hydrolysis (biocatalysis). The objective of this work was to purify an enzyme from Streptomyces parvulus and to characterize it through physic-chemical applications including ultrasound effect.