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Bergrath J, Zeppetzauer F, Rumpf J, Kamm B, Putz R, Kling HW, Schulze M. Mechanochemical Tailoring of Lignin Structure: Influence of Different Particle Sizes in the Organosolv Process. Macromol Biosci 2024:e2400090. [PMID: 38899790 DOI: 10.1002/mabi.202400090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Revised: 06/14/2024] [Indexed: 06/21/2024]
Abstract
The autocatalyzed ethanolic organosolv process is gaining increasing attention for the sulfur-free isolation of lignin, which is subsequently used as a renewable substitute for various fossil-based applications. For the first time, the mechanochemical influence of seven different particle sizes of two different biomasses on the respective organosolv lignin structure is examined. Wine pruning (Pinot Noir) and wine pomace (Accent) are used for organosolv process with particle sizes ranging from 2.0-1.6 mm to less than 0.25 mm. As particle size decreases, the weight-average molecular weight increases, while the total phenol content decreases significantly. Additionally, the distribution of the lignin-typical monolignols and relevant substructures, as determined by two-dimensional heteronuclear nuclear magnetic resonance spectra single quantum coherence (HSQC), is observed. The degree of grinding of the biomass has a clear chemical-structural influence on the isolated HG and HGS organosolv lignins. Therefore, it is crucial to understand this influence to apply organosolv lignins in a targeted manner. In the future, particle size specifications in the context of the organosolv process should be expressed in terms of distribution densities rather than in terms of a smaller than specification.
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Affiliation(s)
- Jonas Bergrath
- Department of Natural Sciences, Bonn-Rhein-Sieg University of Applied Sciences, von-Liebig-Strasse 20, 53359, Rheinbach, Germany
- Department of Chemistry and Biology, University of Wuppertal, 42119, Wuppertal, Germany
| | - Franz Zeppetzauer
- Kompetenzzentrum Holz GmbH - Competence Center for Wood Chemistry and Wood Composites (Wood K Plus), Altenberger Strasse 69, Linz, 4040, Austria
| | - Jessica Rumpf
- Faculty of Agriculture, University of Bonn, Meckenheimer Allee 174, 53115, Bonn, Germany
| | - Birgit Kamm
- Kompetenzzentrum Holz GmbH - Competence Center for Wood Chemistry and Wood Composites (Wood K Plus), Altenberger Strasse 69, Linz, 4040, Austria
- Faculty of Environment and Natural Sciences, Brandenburg University of Technology Cottbus-Senftenberg, 03046, Cottbus, Germany
| | - Robert Putz
- Kompetenzzentrum Holz GmbH - Competence Center for Wood Chemistry and Wood Composites (Wood K Plus), Altenberger Strasse 69, Linz, 4040, Austria
| | - Hans-Willi Kling
- Department of Chemistry and Biology, University of Wuppertal, 42119, Wuppertal, Germany
| | - Margit Schulze
- Department of Natural Sciences, Bonn-Rhein-Sieg University of Applied Sciences, von-Liebig-Strasse 20, 53359, Rheinbach, Germany
- Faculty of Agriculture, University of Bonn, Meckenheimer Allee 174, 53115, Bonn, Germany
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Abdeldayem OM, Al Noman MA, Dupont C, Ferras D, Grand Ndiaye L, Kennedy M. Hydrothermal carbonization of Typha australis: Influence of stirring rate. ENVIRONMENTAL RESEARCH 2023; 236:116777. [PMID: 37517487 DOI: 10.1016/j.envres.2023.116777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 07/25/2023] [Accepted: 07/27/2023] [Indexed: 08/01/2023]
Abstract
According to existing literature, there are no conclusive results on the impact of stirring on hydrothermal carbonization (HTC); some studies report a significant impact on the product's properties, while others indicate no influence. This study investigates the influence of stirring rate on several responses and properties of HTC products, including solid mass yield, solid carbon fraction, surface area, surface functional groups, morphology, and the fate of inorganic elements during HTC. Waste biomass was introduced as a feedstock to a 2 L HTC reactor, where the effects of temperature (180-250 °C), residence time (4-12 h), biomass to water (B/W) ratio (1-10%), and stirring rate (0-130 rpm) were investigated. The findings of this study conclusively indicated that the stirring rate does not influence any of the studied responses or properties of hydrochar under the selected experimental conditions used in this study. Nevertheless, the results indicated that a low-stirring rate (5 RPM) is enough to slightly enhanced the heating-up phase of the HTC reactor. For future research, it is recommended to examine the impact of stirring rate on the HTC of other types of biomass using the methodology developed in this study.
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Affiliation(s)
- Omar M Abdeldayem
- Department of Water Supply, Sanitation, and Environmental Engineering, IHE Delft Institute for Water Education, Westvest 7, 2611AX, Delft, the Netherlands; Department of Water Management, Faculty of Civil Engineering and Geosciences, Delft University of Technology, Stevinweg 1, 2628 CN, Delft, the Netherlands.
| | - Md Abdullah Al Noman
- Department of Water Supply, Sanitation, and Environmental Engineering, IHE Delft Institute for Water Education, Westvest 7, 2611AX, Delft, the Netherlands
| | - Capucine Dupont
- Department of Water Supply, Sanitation, and Environmental Engineering, IHE Delft Institute for Water Education, Westvest 7, 2611AX, Delft, the Netherlands
| | - David Ferras
- Department of Water Supply, Sanitation, and Environmental Engineering, IHE Delft Institute for Water Education, Westvest 7, 2611AX, Delft, the Netherlands
| | - Lat Grand Ndiaye
- Department of Physics, University Assane Seck of Ziguinchor, BP.523, Ziguinchor, Senegal
| | - Maria Kennedy
- Department of Water Supply, Sanitation, and Environmental Engineering, IHE Delft Institute for Water Education, Westvest 7, 2611AX, Delft, the Netherlands; Department of Water Management, Faculty of Civil Engineering and Geosciences, Delft University of Technology, Stevinweg 1, 2628 CN, Delft, the Netherlands
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An Innovative, Green Cascade Protocol for Grape Stalk Valorization with Process Intensification Technologies. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12157417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Valorization of agri-food residues to produce bio-based platform chemicals will enhance the transition to the bio-economy era. To this end, a sustainable process has been developed for the overall valorization of grape stalks (GS) according to a circular approach, starting from the lignin fraction to further deal with the cellulose-rich residue. This non-conventional protocol fully adheres to green chemistry principles, exploiting the so-called enabling technologies—mainly ultrasound and microwaves—for energy-saving innovative processes. Firstly, ultrasound-assisted extraction (UAE, 40 kHz, 200 W) demonstrated to be an excellent technique for GS delignification combined with natural deep eutectic solvents (NaDESs). Delignification enables isolation of the pertinent lignin framework and the potential to obtain a polyphenol-rich liquid fraction, focusing on the valorization of GS as source of bioactive compounds (BACs). Among the NaDESs employed, the combination of choline chloride (ChCl) and levulinic acid (LevA) (ChLevA) presented noteworthy results, enabling a delignification higher than 70%. LevA is one of the top-value biobased platform chemicals. In this work, a flash microwave (MW)-assisted process was subsequently applied to the cellulose-rich fraction remained after delignification, yielding 85% LevA. The regeneration of this starting compound to produce ChLevA can lead to a further biomass delignification cycle, thus developing a new cascade protocol for a full valorization of GS.
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Salem Y, Rajha HN, Franjieh D, Hoss I, Manca ML, Manconi M, Castangia I, Perra M, Maroun RG, Louka N. Stability and Antioxidant Activity of Hydro-Glyceric Extracts Obtained from Different Grape Seed Varieties Incorporated in Cosmetic Creams. Antioxidants (Basel) 2022; 11:antiox11071348. [PMID: 35883839 PMCID: PMC9311904 DOI: 10.3390/antiox11071348] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 07/05/2022] [Accepted: 07/08/2022] [Indexed: 12/15/2022] Open
Abstract
Grape seeds are agro-industrial by-products, which if improperly managed, may be responsible for socioeconomic and environmental problems. Nevertheless, it is possible to effectively valorize them by means of extraction of the bioactive compounds, especially the antioxidant phenolic molecules, using a safe, green, and environmentally-friendly extractive medium (i.e., hydro-glyceric solution). In the present study, the extraction was performed using seeds from two Lebanese varieties, Obeidi and Asswad Karech, and three international varieties, Marselan, Syrah, and Cabernet Franc. The type and amount of phenolic compounds were identified by High-Performance Liquid Chromatography (HPLC). Marselan was the extract richer in catechins (132.99 ± 9.81 μg/g of dried matter), and it also contained a higher amount of phenolic compounds (49.08 ± 0.03 mg of gallic acid equivalent/g of dry matter and 10.02 ± 0.24 mg of proanthocyanidin content/g of dry matter). The antioxidant capacity of the extracts was assessed using three different colorimetric assays including 2,2-DiPhenyl-1-PicrylHydrazyl (DPPH), CUPRIC ion Reducing Antioxidant Capacity (CUPRAC), and Ferric Reducing Antioxidant Power (FRAP). As expected, Marselan exhibited the highest antioxidant activity; as well, the total phenolic and proanthocyanidin content were the highest. The stability of the Marselan extract incorporated into a commercial cream, was performed at three different temperatures (4, 25, and 50 °C), and four different concentrations (5, 4, 3, 2%), over a period of 4 months, using different methods such as centrifugation, Heat-Shock Cycles, pH, and viscosity. All Marselan hydro-glyceric extract formulations were proven to be stable over the entire 4 months, where the highest stability was achieved at 4 °C and the least at 50 °C. This study supports the suitability of the incorporation of phenolic extracts into commercial creams to enrich the cosmetic industry with effective, natural, and safe skincare products.
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Affiliation(s)
- Yara Salem
- Centre d’Analyses et de Recherche, Unité de Recherche Technologies et Valorisations Agro-Alimentaire, Faculté des Sciences, Université Saint-Joseph de Beyrouth, P.O. Box 17-5208, Beirut 1104 2020, Lebanon; (Y.S.); (D.F.); (I.H.); (R.G.M.); (N.L.)
| | - Hiba N. Rajha
- Ecole Supérieure d’Ingénieurs de Beyrouth (ESIB), Université Saint-Joseph de Beyrouth, CST Mkalles Mar Roukos, Beirut 1107 2050, Lebanon
- Correspondence: (H.N.R.); (M.L.M.)
| | - Diana Franjieh
- Centre d’Analyses et de Recherche, Unité de Recherche Technologies et Valorisations Agro-Alimentaire, Faculté des Sciences, Université Saint-Joseph de Beyrouth, P.O. Box 17-5208, Beirut 1104 2020, Lebanon; (Y.S.); (D.F.); (I.H.); (R.G.M.); (N.L.)
| | - Israa Hoss
- Centre d’Analyses et de Recherche, Unité de Recherche Technologies et Valorisations Agro-Alimentaire, Faculté des Sciences, Université Saint-Joseph de Beyrouth, P.O. Box 17-5208, Beirut 1104 2020, Lebanon; (Y.S.); (D.F.); (I.H.); (R.G.M.); (N.L.)
| | - Maria Letizia Manca
- Department of Life and Environmental Sciences, University of Cagliari, Via Ospedale n.72, 09124 Cagliari, Italy; (M.M.); (I.C.); (M.P.)
- Correspondence: (H.N.R.); (M.L.M.)
| | - Maria Manconi
- Department of Life and Environmental Sciences, University of Cagliari, Via Ospedale n.72, 09124 Cagliari, Italy; (M.M.); (I.C.); (M.P.)
| | - Ines Castangia
- Department of Life and Environmental Sciences, University of Cagliari, Via Ospedale n.72, 09124 Cagliari, Italy; (M.M.); (I.C.); (M.P.)
| | - Matteo Perra
- Department of Life and Environmental Sciences, University of Cagliari, Via Ospedale n.72, 09124 Cagliari, Italy; (M.M.); (I.C.); (M.P.)
| | - Richard G. Maroun
- Centre d’Analyses et de Recherche, Unité de Recherche Technologies et Valorisations Agro-Alimentaire, Faculté des Sciences, Université Saint-Joseph de Beyrouth, P.O. Box 17-5208, Beirut 1104 2020, Lebanon; (Y.S.); (D.F.); (I.H.); (R.G.M.); (N.L.)
| | - Nicolas Louka
- Centre d’Analyses et de Recherche, Unité de Recherche Technologies et Valorisations Agro-Alimentaire, Faculté des Sciences, Université Saint-Joseph de Beyrouth, P.O. Box 17-5208, Beirut 1104 2020, Lebanon; (Y.S.); (D.F.); (I.H.); (R.G.M.); (N.L.)
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Šelo G, Planinić M, Tišma M, Grgić J, Perković G, Koceva Komlenić D, Bucić-Kojić A. A Comparative Study of the Influence of Various Fungal-Based Pretreatments of Grape Pomace on Phenolic Compounds Recovery. Foods 2022; 11:foods11111665. [PMID: 35681415 PMCID: PMC9180687 DOI: 10.3390/foods11111665] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 05/29/2022] [Accepted: 06/02/2022] [Indexed: 02/06/2023] Open
Abstract
Wineries produce considerable amounts of grape pomace, which is a readily available natural source of bioactive phenolic compounds. In this study, grape pomace was used as a substrate for the cultivation of eleven filamentous fungi (Trametes versicolor TV6, Trametes versicolor TV8, Trametes versicolor AG613, Trametes gibbosa, Phanerochaete chrysosporium, Ceriporiopsis subvermispora, Pleurotus eryngii, Ganoderma lucidum, Ganoderma resinaceum, Humicola grisea, and Rhizopus oryzae) under solid-state conditions (SSF) for 15 days with the aim of improving the recovery of the individual phenolic compounds. Twenty-one phenolic compounds were quantified and the recovery of seventeen of them (gallic acid, ellagic acid, p-hydroxybenzoic acid, syringic acid, vanillic acid, 3,4-dihydroxybenzoic acid, ferulic acid, o-coumaric acid, p-coumaric acid, epicatechin gallate, galocatechin gallate, quercetin, kaempferol, procyanidin B1, procyanidin B2, resveratrol, and ε-viniferin) were positively affected by SSF. Ellagic acid is the most recovered compound, whose content increased 8.8-fold after 15 days of biological treatment with Ceriporiopsis subvermispora compared to the untreated initial sample. Among the microorganisms tested, the fungi Pleurotus eryngii and Rhizopus oryzae proved to be the most effective in increasing the recovery of most phenolic compounds (1.1–4.5-fold). In addition, the nutrient composition (proteins, ash, fats) of grape pomace was positively affected by the biological treatments.
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