171 KB39 KB193820252015Zule, Janjaštevilka:10letnik:73str. 479-487ISSN:0017-2723COBISSID:4253094URN:URN:NBN:SI:doc-9EEMKY6BslZveza društev inženirjev in tehnikov gozdarstva in lesarstva SlovenijeGozdarski vestnikbukov lescelulozna vlaknadodana vrednostfrakcioniranje biomasekemična predelavaksilanligninnanofibrilirana celulozaMožnosti kemične predelave bukovega lesa| Possibilities for chemical conversion of beech wood|This article presents chemical composition of beech wood as well as various possibilities for its chemical conversion. The useful components of beech biomass are primarily cellulose fibers, xylan and lignin. Some of the most important technological procedures for wood fractionation are described, as for example hydrolysis, fermentation, pyrolysis and extraction, together with marketable products which are produced in the processes. The greatest potential for the future is ascribed to the production of nanofibrilated cellulose, which is considered to become the raw material of the future. Recent research has indicated that beech wood and bark contain high added value bioactive compounds, while seeds are extremely reach source of high quality oil. Beech wood, including waste such as bark and sawdust, represent reach raw material which might be conveniently converted to different marketable productsV prispevku je predstavljena kemijska struktura bukovega lesa in različne možnosti za njegovo kemično predelavo. Uporabne komponente biomase so predvsem celulozna vlakna, ksilan in lignin. Predstavljeni so nekateri najpomembnejši postopki frakcioniranja lesa, in sicer hidroliza, fermentacija, piroliza in ekstrakcija ter tržno zanimivi produkti, ki pri tem nastajajo. V prihodnosti največji potencial pomeni pridobivanje nanofibrilirane celuloze, ki je surovina prihodnosti. Nedavne raziskave so pokazale, da bukov les in skorja vsebujeta tehnološko pomembne antioksidante, medtem ko so plodovi (žir) izredno bogat vir kakovostnega olja. Bukov les, skupaj z odpadki, kot sta skorja in žagovina, je bogat surovinski potencial, ki bi ga veljalo izkoristiti tudi kot vir tržno zanimivih komponentTEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaZveza gozdarskih društev Slovenije