We report a near-complete dissolution of wood lignin at less than 80°C for 20 min using an easily recyclable hydrotrope.

In this study, we present willow wood as a new low-cost, renewable, and sustainable biomass source for the production of highly porous activated carbon application in energy storage devices. The obtained showed favorable features required excellent electrochemical performance such high surface area (∼2 800 m2 g-1) pore volume (1.45 cm3 g-1), with coexistence micropores mesopores. This material was tested an electrode supercapacitor specific capacitance 394 F g-1 at current density 1 A good...

Understanding the chemical structure of lignin in willow bark is an indispensable step to design how separate its fiber bundles. The whole cell wall and enzyme preparations sequentially isolated from ball-milled bark, inner wood were comparatively investigated by nuclear magnetic resonance (NMR) spectroscopy three classical degradative methods, i.e., alkaline nitrobenzene oxidation, derivatization followed reductive cleavage, analytical thioacidolysis. All results demonstrated that guaiacyl...

Synthetic dyes and chemicals create an enormous impact on environmental pollution both in textile manufacturing after the product's lifetime. Biobased plant-derived colorants mordants have great potential for development of more sustainable dyeing processes. Colorants isolated from biomass residues are renewable, biodegradable, usually less harmful than their synthetic counterparts. Interestingly, they may also bring additional functions to materials. However, extraction purification...

The morphology and chemical composition of the inner bark four willow hybrids were analyzed as a step toward complete biomass valorization. consisted highly delignified bundles thick-walled sclerenchyma fibers nondelignified surrounding tissue thin-walled parenchyma cells. In comparison with wood fibers, longer, they had very narrow lumen their walls made up to eight separate layers. One fourth dry mass was formed ash acetone extractable substances. Although lignin-to-polysaccharide ratio...

Willow bark is a rich source of heterogeneous polyphenolic compounds and potential feedstock for biorefinery processes aiming at chemicals fiber production. Here, mild hot water treatment willow hybrid Karin was studied to find practical means isolating its non-cell-wall components their utilization in proposed aid valorization the biomass. A short aqueous 80 °C liberated extract >20% yield under unpressurized conditions. The characterized using mainly gas chromatography-mass spectrometry...

This study focused on the effect of temperature and residence time primary thermal decomposition reactions during a fast pyrolysis softwood alkali lignin. The use Py-GC/MS/FID (Micropyrolyser-Gas Chromatography/Mass Spectrometry/Flame Ionization Detector) allowed for rapid heating sample detailed identification quantification products at range 400–600 °C, with times from 0.5–5 s. identified were mainly volatile guaiacyl-type compounds. There was general increase in yield majority compounds...

Developing the bio-based barrier material to substitute petroleum-based one is trend in functional packaging applications. Utilization of abundantly underappreciated bark biomass attractive from sustainability point view; however, an upgraded approach required maximize performances lignin-containing cellulose nanofibril (LCNF) films willow bark. Herein, hot water extraction (HWE) and microfluidization were studied for their effect on yield LCNF its film performance after treatment aqueous...

A 10% emulsion of SBE (containing 35% stilbene glucosides) provided UV protection equal to half the efficiency commercial SPF 15 sun lotions.

Tree stems contain wood in addition to 10–20% bark, which remains one of the largest underutilized biomasses on earth. Unique macromolecules (like lignin, suberin, pectin, and tannin), extractives, sclerenchyma fibers form main part bark. Here, we perform detailed investigation antibacterial antibiofilm properties bark-derived fiber bundles discuss their potential application as wound dressing for treatment infected chronic wounds. We show that yarns containing at least 50% willow bark...

The nature of marine biomass is very complex for a material scientist due to the large seasonal variation in chemical composition that makes it difficult prepare standardized products. A systematic investigation interaction microwave irradiation with seaweed from Norway and Caribbean region was performed, covering broad temperature range (130 → 170 °C) without addition ℽ-valerolactone ratios 1:4 1:2. temperatures above 150 °C led closure mass balances up 90 % includes polysaccharides,...

Several bioactive compounds are in use for the treatment of neurodegenerative disorders, such as Alzheimer's and Parkinson's disease. Historically, willow (salix sp.) bark has been an important source salisylic acid other natural with anti-inflammatory, antipyretic analgesic properties. Among these, picein isolated from hot water extract bark, found to act a secondary metabolite antioxidant. The aim this study was investigate unrevealed pharmacological action picein. In silico studies were...

The development of a mild and green method for separating natural fiber bundles from willow bark is an essential step in exploring preserving their functions. isolation well-oriented the fast-growing hybrid solely using sodium bicarbonate under conditions was successfully demonstrated. Additionally, Lyocell fibers were mixed with equal amount proved ability to convert into spun yarns, which provided excellent protection ultraviolet radiation (UPF ≥ 140). Moreover, these yarns demonstrated...

Earlier studies have shown that the bark of Salix L. species (Salicaceae family) is rich in extractives, such as diverse bioactive phenolic compounds. However, we lack knowledge on properties willow and clones adapted to harsh climate conditions cool temperate zone. Therefore, present study aimed obtain information functional profiles northern for use value-added solutions. Of 16 studied here, 12 were examples widely distributed native Finnish species, including dark-leaved (S. myrsinifolia...

Time gated Raman as a facile spectroscopic non-destructive technique for collecting chemical profile of lignocellulosic biomass.

Hundreds of different fast-growing Salix hybrids have been developed mainly for energy crops. In this paper, we studied water extracts from the bark 15 willow and species as potential antimicrobial additives. Treatment ground in under mild conditions extracted 12-25% dry material. Preparative high-performance liquid chromatography is proven here a fast highly efficient tool small-scale recovery raffinose crude structural elucidation. Less than half dissolved material was assigned by...

This study investigates the chemical structure of proanthocyanidin-rich crude extracts from willow bark and these materials were tested initially as adsorbents for artificial (waste)water treatment. The obtained through mild water extraction colorant fractions further chromatographically fractionated to understand proanthocyanidins. chemistry purified investigated using nuclear magnetic resonance (NMR) ultraperformance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS). Both NMR...

This paper discusses the influence of reactor design and initial consistency when partially hydrolyzing microcrystalline cellulose (MCC) in supercritical water. Experiments conducted on two pilot reactors located Finland Spain showed that stopping reaction using depressurization instead quenching, combined with a sufficiently high MCC consistency, led to significant change kinetics. A complete particle size reduction was achieved after 50 ms only due additional shear-induced degradation,...

The bark from fast-growing willow crops contains long and strong sclerenchyma fiber bundles, which could potentially replace the pulp annual plant fibers currently used to reinforce green polymer composites. Here we successfully demonstrate isolation of bundles with a simple alkali treatment under much milder conditions than what separation requires. separated had hydrophobic surfaces, made them compatible polymers, in this case polylactic acid, without using any additives. most provided...

High surface lignin content (i.e. 34.6 %) sclerenchyma fiber bundles were successfully isolated with a yield of 71 % by mild alkali (NaOH dosage 5 wt%) extraction eucalyptus (Eucalyptus globulus) bark under 100 °C for 60 min.. The mechanical properties the composites prepared hot pressing cellulose acetate butyrate (CAB) sheets evaluated. exhibited good compatibility CAB due to their hydrophobic surfaces. bundle/ revealed maximum at weight ratio 25:75, which demonstrates promise utilizing...

Although extractives have been symbolized as major bioactive pharmacological compounds from Salix (Salicaceae) bark, we speculated that these pharmaceutical effects cannot be solely attributed to phenolic components and their derivatives, but the long-chain suberin acids also contribute therapeutic effects. Hence, isolation deconstruction of were conducted, for first time, enrich our knowledge about macromolecular at cell wall willow bark. Saponification was adopted obtain extracts a yield...

The formation of detrimental pitch deposits can cause various problems at pulp and paper mills, as they contribute to unscheduled shutdowns even paralyze the operation entire mills. To understand, avoid control in we investigated overall chemical composition 16 deposit samples collected from fiber line a softwood kraft mill. Sodium salts were tentatively speculated dominant fractions addition minor extractives carbohydrates. Low molar mass dichloromethane, acetone water extracts analysed by...