Isolation of phenolic compounds from larch wood waste using pressurized hot water: extraction, analysis and economic evaluation

Ravber, Matej; Knez, Željko; Škerget, Mojca

doi:10.1007/s10570-015-0719-7

Cited by 35 publications

(21 citation statements)

References 24 publications

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“…Usually, to perform the extraction, water is maintained at conditions under the critical point, which means in the liquid state [39,49]. Tannins extraction rates with this method are very wide ranging from 52.9 to 381.9 mg/g of dried extract (Table 2) [50,51]. The main advantage of this technique is the reduction of the extraction time to 5-60 min [38] which entail a reduction of the potential degradation of tannins, since it has been directly related to long extraction times [39].…”

Section: Pressurized Water Extractionmentioning

confidence: 99%

“…For the tire industry it is essential to prevent blowout risks, thus it is needed to control deformation tires but also offer the comfort of riding, properties which are mainly owned by the tire rubber adhesion. Some tannin adhesives that have been successfully tested include tannin resorcinol-formaldehyde, thermosetting tannins formulation, and also cold setting tannins adhesives [11,51]. However, as the current trend tends to avoid the use of formaldehyde many studies have been focused on its replacement.…”

Section: Adhesives: Wood Tires Concretementioning

confidence: 99%

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Technological Application of Tannin-Based Extracts

et al. 2020

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Tannins are polyphenolic compounds naturally found in vegetables. Their presence in nature has prompted their historical use in many different ways. The revision of their traditional utilization has allowed their further modification aiming for an industrial application. Sometimes these modifications have implied the addition of harmful substances such as formaldehyde, classified as a carcinogen of category B1. In other cases, these natural tannins have been replaced by synthetic compounds that threaten human and animal health and damage the environment. Therefore, currently, both academy and industry are searching for the substitution of these unsafe complexes by the increasing inclusion of tannins, natural molecules that can be obtained from several and diverse renewable resources, modified using harmless additives. To achieve promising results, cost-efficient and eco-friendly extraction methods have been designed. Once these green alternatives have been isolated, they have been successfully applied to many fields with very assorted aims of utilization such as coagulants, adhesives, floatation agents, tannings, dyes, additives, or biomolecules. Therefore, this review offers a global vision of the full process that involves the tannin’s technological application including an overview of the most relevant tannin sources, effective extraction methods, and their utilization in very diverse fields.

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Section: Pressurized Water Extractionmentioning

confidence: 99%

Section: Adhesives: Wood Tires Concretementioning

confidence: 99%

Technological Application of Tannin-Based Extracts

et al. 2020

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“…Most of the works published in recent years are devoted to the extractive isolation of bioactive dihydroquercetin and arabinogalactan from larch wood (Ravber et al 2015;Troshina and Roshchin 2014;Ma et al 2012).…”

Section: Manuscriptmentioning

confidence: 99%

Green biorefinery of larch wood biomass to obtain the bioactive compounds, functional polymers and nanoporous materials

et al. 2018

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The first green biorefinery of larch wood based on new methods of biomass fractionation on dihydroquercitin (DHQ), arabinogalactan (AG), microcrystalline cellulose (MCC) and soluble lignin (SL) is reported. The new green method of one-step isolation of DHQ and AG from larch wood by ethanol-water solution is described. The first results of kinetic studies and optimization of the process of extracted larch wood peroxide fractionation on MCC and SL in acetic acidwater medium in the presence of green TiO2 catalyst are presented. The products obtained from larch wood were characterized by FTIR, SEM, AFM, XRD and chemical methods. The scheme of larch wood biorefinery is suggested which integrates the described processes of biomass fractionation on DHQ, AG, MCC, SL and the yearly developed methods of polysaccharides processing to bioactive cupper and amino acidcontaining sulfated polymers along with the methods of nanoporous materials synthesis from lignin. All these methods use such non-toxic and less-toxic reagents, as water, ethanol, hydrogen peroxide, acetic acid, sulfamic acid, urea.

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“…Barks and branches are waste material of the timber industry with important, but also partially underexplored, supplies of biologically-active compounds. Several conifer barks contain phytoconstituents, such as tannins, terpenes, and polyphenols [ 1 , 2 , 3 ]. Many studies have also considered such materials related to their essential oil composition [ 4 ].…”

Section: Introductionmentioning

confidence: 99%

Larix decidua Bark as a Source of Phytoconstituents: An LC-MS Study

Baldan

Sut

Faggian³

et al. 2017

Molecules

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Larix decidua bark is a waste of the timber industry and is widely diffused in Northern Italy. This material can be considered a good source of antioxidants and phytoconstituents with possible use in cosmetic or nutraceutical products. In this study, simple extraction of larch bark was performed using mixtures of ethanol/water. Furthermore, the phytochemical composition of larch bark extract was studied using LC-MSn methods and the main constituents were identified as flavonoids, spiro-polyphenols, and procyanidins. To confirm the identification by LC-MS semi-preparative HPLC was performed in order to isolate the main constituents and verify the structures by 1H-NMR. Antioxidant properties were studied using an in vitro approach combining DPPH assay and LC-MS in order to establish different roles of the various classes of phytochemicasl of the extract. DPPH activity of some of the isolated compounds was also assessed. The overall results indicate this waste material as a good source of antioxidant compounds, mainly procyanidins, whichresulted the most active constituents in the DPPH assay.

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Isolation of phenolic compounds from larch wood waste using pressurized hot water: extraction, analysis and economic evaluation

Cited by 35 publications

References 24 publications

Technological Application of Tannin-Based Extracts

Technological Application of Tannin-Based Extracts

Green biorefinery of larch wood biomass to obtain the bioactive compounds, functional polymers and nanoporous materials

Larix decidua Bark as a Source of Phytoconstituents: An LC-MS Study

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