Enzymatic‐assisted extraction and modification of lignocellulosic plant polysaccharides for packaging applications

Abstract

On the use of tris(nonylphenyl) phosphite as a chain extender in melt-blended poly(hydroxybutyrate-co-hydroxyvalerate)/ clay nanocomposites: Morphology, thermal stability, and mechanical properties J. González-Ausejo, E. Sánchez-Safont, J. Gámez-Pérez and L. Cabedo, J. Appl. Polym. Sci. 2015, DOI: 10.1002 Characterization of polyhydroxyalkanoate blends incorporating unpurified biosustainably produced poly(3-hydroxybutyrate-co-3-hydroxyvalerate) A. Martínez-Abad, L. Cabedo, C. S. S. Oliveira, L. Hilliou, M. Reis and J. M. Lagarón, J. Appl. Polym. Sci. 2015, DOI: 10.1002 Modification of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) properties by reactive blending with a monoterpene derivative L. Pilon and C. Kelly, J. Appl. Polym. Sci. 2015, DOI: 10.1002 Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) films for food packaging: Physical-chemical ABSTRACT: Plant polysaccharides comprise the main renewable resource available in the biosphere for biomaterial production. However, the recalcitrant and heterogeneous structure of lignocellulosic biomass hinders the effective fractionation and exploitation of the polysaccharide components for the design of carbohydrate-based materials. Carbohydrate-active enzymes constitute a selective and versatile biotechnological tool that can assist during the biomass pretreatment steps to extract and fractionate the polysaccharide macromolecular components. Moreover, this enzymatic toolbox can be as well exploited for the tailored modification of the molecular structure of relatively pure polysaccharide components to achieve customized macroscopic properties. This review critically discusses the potential and challenges of the use of plant lignocellulosic polysaccharides and enzymatic modifications to design and prepare suitable materials for packaging applications in terms of their structure-property relations. Structural factors such as the molar mass and crystallinity of the polysaccharide fractions and functional factors such as water sensitivity and processability of the derived films are critical for the material performance. The global net primary production of carbon in the biosphere is estimated around 10 11 tonnes per year, 1 from which polysaccharides account for approximately 75% of all biomass. In this context, plant biomass represents the main renewable resource for biofuel and materials production, as a future replacement of fossil-based energy and goods. New schemes for the sustainable exploitation of biomass have emerged in the last decades (the "biorefinery" concept), which integrate chemical, mechanical, thermal, and biotechnological conversion processes for the generation of energy, platform chemicals, and bio-based polymeric materials. Different generations of biorefineries have been implemented, depending on the biomass source (e.g., agriculturederived crops and food waste, lignocellulosic biomass, marine feedstock, designer crops) and on the diversity of products that are converted (e.g., bioethanol after fermentation, syngas after thermochemical conversion, fin...

Differences in extractability under subcritical water reveal interconnected hemicellulose and lignin recalcitrance in birch hardwoods

“…These products might be of great potential interest in the food and packaging industry, as texturizing agents or high barrier packaging reinforcements. 18,19 The sequential extraction process using subcritical water is energy efficient, scalable and environmentally benign, and would add valuable fractions to the production chain of wood processing industries, increasing their competitiveness.…”

“…While cellulose has been widely exploited in the paper and pulp industry, the transformation of hemicellulose and lignin into high value products has been considered recently. Hemicelluloses in polymeric form display film-forming and oxygen barrier properties comparable to synthetic polymers together with excellent rheological properties, 18,19 with potential applications in the packaging sector and as texturizing agents. On the other hand, the use of lignin in material systems has not been very successful due to the molecular heterogeneity of available technical lignins 20 and molecular mass dispersity.…”

Gelatin-Based Antimicrobial Films Incorporating Pomegranate (Punica granatum L.) Seed Juice by-Product

“…The degree of glucuronosyl substitution is, however, relatively low compared to other common sources, such as sugarcane bagasse and straw [36]. A lower degree of substitution can be ascribed to the higher crystallinity and lower solubility of xylan, which should directly impact in an improvement in mechanical reinforcement capacities and barrier properties of PSP [37]. Both, cellulose and xylan content in PSP, would in this way contribute to increase its reinforcing potential in edible films or other food packaging applications.…”

Influence of the molecular motifs of mannan and xylan populations on their recalcitrance and organization in spruce softwoods

“…In this work, we have used mild acid hydrothermal treatment by sequential subcritical water extraction (SWE) to isolate the different hemicellulose populations based on their extractability and recalcitrance in the lignocellulosic network, minimizing the occurrence of deacetylation and autohydrolysis. 11,26,27 SWE is considered a green extraction method using pressurized water as a solvent, offering a safe, sustainable and cost-effective alternative to current biomass extraction methods. 28 The dielectric potential and ionization of water at high temperatures and high hydrostatic pressures decreases polarity, contributing to the extraction and dissolution of less polar, less soluble high molecular weight biopolymers.…”