{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,30]],"date-time":"2026-07-30T16:16:55Z","timestamp":1785428215636,"version":"3.56.0"},"reference-count":52,"publisher":"MDPI AG","issue":"14","license":[{"start":{"date-parts":[[2026,7,13]],"date-time":"2026-07-13T00:00:00Z","timestamp":1783900800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100006769","name":"Russian Science Foundation","doi-asserted-by":"publisher","award":["25-23-01358"],"award-info":[{"award-number":["25-23-01358"]}],"id":[{"id":"10.13039\/501100006769","id-type":"DOI","asserted-by":"publisher"}]},{"award":["25-23-01358"],"award-info":[{"award-number":["25-23-01358"]}],"id":[{"id":"https:\/\/ror.org\/03y2gwe85","id-type":"ROR","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Plants"],"abstract":"<jats:p>The biomass of Polytrichum commune Hedw. (Polytrichaceae) moss demonstrates high pharmaceutical and biorefining potential, but its main structural biopolymers (cellulose, hemicellulose, and polyphenolic compounds) remain incompletely characterized. In this work, the method of nitric acid\u2013ethanol extraction and dioxane extraction (Pepper\u2019s method) was used to isolate cellulose and lignin. XRD, SEC, FTIR, and Py-GC\/MS were used for the biopolymer\u2019s characterization. The composition of hemicellulose was determined without prior isolation using HPLC analysis of the total biomass hydrolysate. The yields were: cellulose 23.0 \u00b1 0.7%, hemicellulose (calculated as sum of mannose, galactose and xylose) 24.1 \u00b1 0.5%, and dioxane-extractable polyphenolic fraction 8.0 \u00b1 0.4% of dry biomass. The cellulose exhibits a low degree of polymerization (360) and moderate crystallinity (40.4% as determined by XRD). The hemicellulose is dominated by mannose and galactose (60% and 30% of non-cellulosic sugars), indicative of a galactomannan. The dioxane-extractable polyphenolic fraction has a low molecular weight (Mn~1100 Da) and an atypical H:S:G monomer ratio of 58:35:7, confirming its condensed non-lignin structure. These properties of moss biopolymers offer opportunities for comprehensive biomass processing and for further pharmacological evaluation of the polyphenolic fraction as a potential antioxidant source.<\/jats:p>","DOI":"10.3390\/plants15142154","type":"journal-article","created":{"date-parts":[[2026,7,13]],"date-time":"2026-07-13T07:28:27Z","timestamp":1783927707000},"page":"2154","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Chemical Composition of the Moss Polytrichum Commune: A Focus on Structural Biopolymers"],"prefix":"10.3390","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-3036-5145","authenticated-orcid":false,"given":"Nikolay A.","family":"Budaev","sequence":"first","affiliation":[{"name":"Core Facility Center \u2018Arktika\u2019, Northern (Arctic) Federal University, Arkhangelsk 163002, Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9857-4373","authenticated-orcid":false,"given":"Artyom V.","family":"Belesov","sequence":"additional","affiliation":[{"name":"Core Facility Center \u2018Arktika\u2019, Northern (Arctic) Federal University, Arkhangelsk 163002, Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6149-6770","authenticated-orcid":false,"given":"Ilya I.","family":"Pikovskoi","sequence":"additional","affiliation":[{"name":"Core Facility Center \u2018Arktika\u2019, Northern (Arctic) Federal University, Arkhangelsk 163002, Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8565-6871","authenticated-orcid":false,"given":"Anna V.","family":"Faleva","sequence":"additional","affiliation":[{"name":"Core Facility Center \u2018Arktika\u2019, Northern (Arctic) Federal University, Arkhangelsk 163002, Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0555-9201","authenticated-orcid":false,"given":"Alexey V.","family":"Malkov","sequence":"additional","affiliation":[{"name":"Core Facility Center \u2018Arktika\u2019, Northern (Arctic) Federal University, Arkhangelsk 163002, Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1775-9606","authenticated-orcid":false,"given":"Sergey A.","family":"Pokryshkin","sequence":"additional","affiliation":[{"name":"Core Facility Center \u2018Arktika\u2019, Northern (Arctic) Federal University, Arkhangelsk 163002, Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8441-788X","authenticated-orcid":false,"given":"Evgeniy A.","family":"Toptunov","sequence":"additional","affiliation":[{"name":"Innovative Facilities Engineering and Innovation Center \u2018Advanced Northern Bioresources Processing Technologies\u2019, Northern (Arctic) Federal University, Arkhangelsk 163002, Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4796-9313","authenticated-orcid":false,"given":"Nikolay V.","family":"Ul\u2019yanovskii","sequence":"additional","affiliation":[{"name":"Core Facility Center \u2018Arktika\u2019, Northern (Arctic) Federal University, Arkhangelsk 163002, Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5223-6857","authenticated-orcid":false,"given":"Dmitry S.","family":"Kosyakov","sequence":"additional","affiliation":[{"name":"Core Facility Center \u2018Arktika\u2019, Northern (Arctic) Federal University, Arkhangelsk 163002, Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,7,13]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"3914","DOI":"10.1039\/C6GC00501B","article-title":"Circular economy design considerations for research and process development in the chemical sciences","volume":"10","author":"Clark","year":"2016","journal-title":"Green Chem."},{"key":"ref_2","first-page":"100029","article-title":"The circular bioeconomy: Its elements and role in European bioeconomy clusters","volume":"6","author":"Stegmann","year":"2020","journal-title":"Resour. 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