Fractionated pyrolysis coupled to gas chromatography and mass spectrometry (Py-GC/MS) appears as an interesting analytical tool for elucidating lignocellulosic biomass structure, as it allows the progressive release of chemical fragments representative of biomass macromolecular composition. In this paper the effect of fractionated pyrolysis time (from 5 s to 300 s) on the degradation of lignin and carbohydrates from beech wood was studied at temperatures between 250 \u00b0C and 500 \u00b0C. Fractionated Py-GC/MS showed that the release temperature of the volatile degradation products varied between the volatile species detected. In addition, the step duration time changed the thermal degradation behavior of lignocellulosic components. Shortening the constant step duration time from 300 s to 5 s shifted the maximum weight loss to the higher temperatures. The result was opposite at long step duration times. Time optimization at each pyrolysis temperature (250 \u00b0C, 40 s; 300 \u00b0C, 30 s; 350 \u00b0C, 25 s; 370 \u00b0C, 20 s; 400 \u00b0C, 15 s; 450 \u00b0C, 10 s; 500 \u00b0C, 5 s) enhanced the yield of both lignin and carbohydrate volatile pyrolysis degradation products. In addition, two multiple temperature maxima were shown for some lignin and carbohydrate derivatives. This behavior may be due to the two different pathways of formation and macromolecular origins of compounds in beech wood. At optimized conditions lignin derivatives having a 3-carbon side chain substituent had a maximum at lower temperature than that of lignin derivatives with a 1-carbon side chain substituent. That phenomenon follows the order of primary and secondary pyrolysis reactions. Similar behaviors were observed among the degradation products of hemicelluloses and cellulose. Degradation products of hemicelluloses were mainly released at lower temperatures than those of cellulose derivatives, which illustrates the lower thermal stability of hemicelluloses compared to cellulose.
", "keywords": ["Beech", "ta114", "[CHIM.GENI] Chemical Sciences/Chemical engineering", "[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering", "Fractionated pyrolysis", "Carbohydrates", "0211 other engineering and technologies", "02 engineering and technology", "540", "Py-GC/MS", "Lignin", "7. Clean energy", "13. Climate action", "Thermal degradation", "0202 electrical engineering", " electronic engineering", " information engineering", "G\u00e9nie chimique", "SDG 7 - Affordable and Clean Energy", "G\u00e9nie des proc\u00e9d\u00e9s", "ta116", "ta215"]}, "links": [{"href": "https://oatao.univ-toulouse.fr/27243/1/GonzalezMartinez_27243.pdf"}, {"href": "https://doi.org/10.1016/j.jaap.2018.11.026"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Analytical%20and%20Applied%20Pyrolysis", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.jaap.2018.11.026", "name": "item", "description": "10.1016/j.jaap.2018.11.026", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.jaap.2018.11.026"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-01-01T00:00:00Z"}}, {"id": "10.1007/s11130-020-00799-y", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-30T16:15:35Z", "type": "Journal Article", "created": "2020-02-03", "title": "Profile and Content of Residual Alkaloids in Ten Ecotypes of Lupinus mutabilis Sweet after Aqueous Debittering Process", "description": "AbstractThe evaluation of the level of alkaloids in edible Lupinus species is crucial from a food safety point of view. Debittering of lupin seeds has a long history; however, the control of the level of alkaloids after processing the seeds is typically only evaluated by changes in the bitter taste. The aim of this study was to evaluate the profile and residual levels of quinolizidine alkaloids (QA) in (Lupinus mutabilis Sweet) after aqueous debittering process. Samples from 10 ecotypes from different areas of Peru were analyzed before and after the process. Based on results obtained by gas chromatography and mass spectrometry, from eight alkaloids identified before the debittering process, only small amounts of lupanine (avg. 0.0012\uffc2\uffa0g/100\uffc2\uffa0g DM) and sparteine (avg. 0.0014\uffc2\uffa0g/100\uffc2\uffa0g DM) remained in the seeds after the debittering process, and no other alkaloids were identified. The aqueous debittering process reduced the content of alkaloids to levels far below the maximal level allowed by international regulations (\uffe2\uff89\uffa4 0.2\uffc2\uffa0g/kg DM).
", "keywords": ["0301 basic medicine", "Lupin Seeds", "Sparteine", "Organic chemistry", "Propiedades fisicoqu\u00edmicas", "Plant Science", "Gas Chromatography-Mass Spectrometry", "Evolution and Nutritional Properties of Lupin Seeds", "Agricultural and Biological Sciences", "Food science", "Per\u00fa", "03 medical and health sciences", "Deshidrataci\u00f3n acuosa", "Alkaloids", "Secado", "Tarwi", "https://purl.org/pe-repo/ocde/ford#2.11.01", "Granos", "Composici\u00f3n qu\u00edmica", "ta116", "Biology", "Ecotipos", "Ecology", " Evolution", " Behavior and Systematics", "Ecotype", "2. Zero hunger", "Original Paper", "0303 health sciences", "Rendimiento", "Procesamiento", "Evaluaci\u00f3n", "ta1183", "An\u00e1lisis organol\u00e9ptico", "ta1182", "Botany", "Life Sciences", "Diversity and Applications of Cyperus Species", "Lupinus", "Chocho", "Chemistry", "Contenido proteico", "Evolution and Ecology of Endophyte-Grass Symbiosis", "Taste", "Seeds", "Lupinus mutabilis"]}, "links": [{"href": "http://link.springer.com/content/pdf/10.1007/s11130-020-00799-y.pdf"}, {"href": "https://doi.org/10.1007/s11130-020-00799-y"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Plant%20Foods%20for%20Human%20Nutrition", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s11130-020-00799-y", "name": "item", "description": "10.1007/s11130-020-00799-y", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s11130-020-00799-y"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-02-03T00:00:00Z"}}, {"id": "10.1007/s12649-017-9910-4", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-30T16:15:43Z", "type": "Journal Article", "created": "2017-03-25", "title": "Possibilities of Using Liquids from Slow Pyrolysis and Hydrothermal Carbonization in Acidification of Animal Slurry", "description": "Pyrolysis and hydrothermal carbonization (HTC) are gaining increasing interest in the context of biomass valorization. However, these processes yield a liquid fraction with an acidic pH value challenging to productize. In this paper, the possibility of replacing concentrated acids in acidification of animal slurry with organic acids derived from thermochemical conversion of various biomasses was investigated. The acid composition of four pyrolysis and one HTC liquid fraction were characterized using capillary electrophoresis and their total acidity determined titrimetrically. The amount of each liquid needed to reduce the pH of pig and cattle slurries to 6.0 and 5.5 were recorded. The total acidity of pyrolysis liquids varied highly (850-2560 meq l-1) depending on the biomass. For HTC liquid the total acidity was low (220 meq l-1). The most concentrated liquid, which showed greatest potential for practical use, was derived from pyrolysis of willow wood. Its required application rate for decreasing the pH of the slurries from >7.5 to 6.0 was 20-50 l t-1. This study suggests that there is a possibility of using liquids from pyrolysis process for acidification of animal slurries. Producing more concentrated liquids, further concentration of these acidiferous streams and the effects of the liquid addition on the properties of slurry are worth further studying.", "keywords": ["ta412", "600", "02 engineering and technology", "kuivatislaus", "pyrolysis", "01 natural sciences", "hydrothermal carbonization", "acidification", "13. Climate action", "happamoituminen", "0202 electrical engineering", " electronic engineering", " information engineering", "SDG 7 - Affordable and Clean Energy", "ta116", "animal slurry", "0105 earth and related environmental sciences"]}, "links": [{"href": "http://link.springer.com/content/pdf/10.1007/s12649-017-9910-4.pdf"}, {"href": "https://doi.org/10.1007/s12649-017-9910-4"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Waste%20and%20Biomass%20Valorization", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s12649-017-9910-4", "name": "item", "description": "10.1007/s12649-017-9910-4", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s12649-017-9910-4"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2017-03-25T00:00:00Z"}}, {"id": "10.1016/j.jbiotec.2023.07.008", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-30T16:17:03Z", "type": "Journal Article", "created": "2023-07-25", "title": "Fast and reliable method to estimate global DNA methylation in plants and fungi with high-pressure liquid chromatography (HPLC)-ultraviolet detection and even more sensitive one with HPLC-mass spectrometry", "description": "DNA (Deoxyribonucleic acid) methylation is one of the epigenetic modifications of DNA, acting as a bridge between genotype and phenotype. Thus, disruption of DNA methylation pattern has tremendous consequences for organism development. Current methods to determine DNA methylation suffer from methodological drawbacks like high requirement of DNA and poor reproducibility of chromatograms. Here we provide a fast and reliable method using high-pressure liquid chromatography (HPLC)-ultraviolet (UV) detector and even more sensitive one with HPLC- mass spectrometry (MS) and we test this method with various plant and fungal DNA isolates. We optimized the preparation of the DNA degradation step to decrease background noise, we improved separation conditions to provide reliable and reproducible chromatograms and conditions to measure nucleotides in HPLC-MS. We showed that global DNA methylation level can be accurately and reproducibly measured with as little as 0.2\u00a0\u00b5M for HPLC-UV and 0.02\u00a0\u00b5M for HPLC-MS of methylated cytosine.", "keywords": ["Chromatography", "Plant DNA", "DNA methylation", "ta1183", "ta1182", "Fungi", "610", "Reproducibility of Results", "DNA Methylation", "Mass Spectrometry", "Fungal DNA", "chromatography", "DNA", " Fungal", "ta116", "Chromatography", " High Pressure Liquid"]}, "links": [{"href": "https://doi.org/10.1016/j.jbiotec.2023.07.008"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Biotechnology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.jbiotec.2023.07.008", "name": "item", "description": "10.1016/j.jbiotec.2023.07.008", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.jbiotec.2023.07.008"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2023-09-01T00:00:00Z"}}, {"id": "10.1016/j.scitotenv.2015.07.094", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-30T16:17:18Z", "type": "Journal Article", "created": "2015-08-15", "title": "Fighting Carbon Loss Of Degraded Peatlands By Jump-Starting Ecosystem Functioning With Ecological Restoration", "description": "Degradation of ecosystems is a great concern on the maintenance of biodiversity and ecosystem services. Ecological restoration fights degradation aiming at the recovery of ecosystem functions such as carbon (C) sequestration and ecosystem structures like plant communities responsible for the C sequestration function. We selected 38 pristine, drained and restored boreal peatland sites in Finland and asked i) what is the long-term effect of drainage on the peatland surface layer C storage, ii) can restoration recover ecosystem functioning (surface layer growth) and structure (plant community composition) and iii) is the recovery of the original structure needed for the recovery of ecosystem functions? We found that drainage had resulted in a substantial net loss of C from surface layer of drained sites. Restoration was successful in regaining natural growth rate in the peatland surface layer already within 5 years after restoration. However, the regenerated surface layer sequestered C at a mean rate of 116.3 g m(-2) yr(-1) (SE 12.7), when a comparable short-term rate was 178.2 g m(-2) yr(-1) (SE 13.3) at the pristine sites. The plant community compositions of the restored sites were considerably dissimilar to those of pristine sites still 10 years after restoration. We conclude that ecological restoration can be used to jump-start some key peatland ecosystem functions even without the recovery of original ecosystem structure (plant community composition). However, the re-establishment of other functions like C sequestration may require more profound recovery of conditions and ecosystem structure. We discuss the potential economic value of restored peatland ecosystems from the perspective of their C sequestration function.", "keywords": ["0301 basic medicine", "Carbon Sequestration", "Conservation of Natural Resources", "ecosystem structure\u2013function relationship", "Ecology and Evolutionary Biology", "ta1172", "Museo", "plant community composition", "turve", "03 medical and health sciences", "Museum", "ecosystem recovery", "Ekologia ja evoluutiobiologia", "ta116", "Ecosystem", "Environmental Restoration and Remediation", "Finland", "0303 health sciences", "hiilensidonta", "Biodiversity", "15. Life on land", "16. Peace & justice", "carbon sequestration", "Carbon", "13. Climate action", "Wetlands", "peat", "ta1181", "ecosystem degradation"]}, "links": [{"href": "https://doi.org/10.1016/j.scitotenv.2015.07.094"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Science%20of%20The%20Total%20Environment", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.scitotenv.2015.07.094", "name": "item", "description": "10.1016/j.scitotenv.2015.07.094", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.scitotenv.2015.07.094"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2015-12-01T00:00:00Z"}}, {"id": "37499875", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-05-30T16:27:48Z", "type": "Journal Article", "created": "2023-07-25", "title": "Fast and reliable method to estimate global DNA methylation in plants and fungi with high-pressure liquid chromatography (HPLC)-ultraviolet detection and even more sensitive one with HPLC-mass spectrometry", "description": "DNA (Deoxyribonucleic acid) methylation is one of the epigenetic modifications of DNA, acting as a bridge between genotype and phenotype. Thus, disruption of DNA methylation pattern has tremendous consequences for organism development. Current methods to determine DNA methylation suffer from methodological drawbacks like high requirement of DNA and poor reproducibility of chromatograms. Here we provide a fast and reliable method using high-pressure liquid chromatography (HPLC)-ultraviolet (UV) detector and even more sensitive one with HPLC- mass spectrometry (MS) and we test this method with various plant and fungal DNA isolates. We optimized the preparation of the DNA degradation step to decrease background noise, we improved separation conditions to provide reliable and reproducible chromatograms and conditions to measure nucleotides in HPLC-MS. We showed that global DNA methylation level can be accurately and reproducibly measured with as little as 0.2\u00a0\u00b5M for HPLC-UV and 0.02\u00a0\u00b5M for HPLC-MS of methylated cytosine.", "keywords": ["Plant DNA", "DNA methylation", "ta1183", "ta1182", "Fungi", "610", "Reproducibility of Results", "DNA Methylation", "Mass Spectrometry", "Fungal DNA", "chromatography", "DNA", " Fungal", "ta116", "Chromatography", " High Pressure Liquid"]}, "links": [{"href": "https://doi.org/37499875"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Biotechnology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "37499875", "name": "item", "description": "37499875", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/37499875"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2023-09-01T00:00:00Z"}}], "links": [{"rel": "self", "type": "application/geo+json", "title": "This document as GeoJSON", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=ta116&f=json", "hreflang": "en-US"}, {"rel": "alternate", "type": "text/html", "title": "This document as HTML", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=ta116&f=html", "hreflang": "en-US"}, {"rel": "collection", "type": "application/json", "title": "Collection URL", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main", "hreflang": "en-US"}, {"type": "application/geo+json", "rel": "first", "title": "items (first)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=ta116&", "hreflang": "en-US"}, {"rel": "last", "type": "application/geo+json", "title": "items (last)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=ta116&offset=6", "hreflang": "en-US"}], "numberMatched": 6, "numberReturned": 6, "distributedFeatures": [], "timeStamp": "2026-05-30T22:58:51.466270Z"}