{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,14]],"date-time":"2026-04-14T19:46:39Z","timestamp":1776195999079,"version":"3.50.1"},"reference-count":48,"publisher":"Walter de Gruyter GmbH","issue":"9","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2016,9,1]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p><jats:italic>Eucalyptus urophylla<\/jats:italic>hybrids are important raw materials for the forest industry in Brazil, and large quantities of barks are available at mill site that may be used for added-value products. The chemical composition of barks of six commercial hybrids clones of<jats:italic>E. urophylla<\/jats:italic>\u00d7<jats:italic>E. grandis<\/jats:italic>,<jats:italic>E. urophylla<\/jats:italic>\u00d7<jats:italic>E. Camaldulensis<\/jats:italic>, and undisclosed<jats:italic>E. urophylla<\/jats:italic>hybrids was studied. The hybrids had similar composition, on average (data based on oven dry bark): 16% extractives, mainly corresponding to polar compounds that are soluble in ethanol and water, 19% lignin, 47% polysaccharides, 1% suberin, and 2% ash. The polysaccharides consists mainly of cellulose as indicated by 84% of total neutral monosaccharides in the acid hydrolysate and 10% xylose. The compositions of the lipophilic extracts was determined by GC-MS before and after alkaline hydrolysis. In all the barks, fatty acids, and triterpenes (namely: betulinic and ursolic acids) were the most abundant compounds followed by smaller amounts of sterols, long-chain aliphatic alcohols, phenolic acids, and acylglycerols. The ethanol-water bark extract had a high phenolic content: total phenolics ranged 211\u2013551 mg gallic acid equivalents (GAE) g<jats:sup>-1<\/jats:sup>of extract, tannins 76\u2013184 mg catechin equivalents (CE) g<jats:sup>-1<\/jats:sup>extract, and flavonoids 98\u2013234 mg CE g<jats:sup>-1<\/jats:sup>of extract. The antioxidant activity corresponds to 338 mg Trolox g<jats:sup>-1<\/jats:sup>of extract. Development of high-value products is proposed through an integrated biorefinery approach including valorisation of extractives and targeting for cellulose-based applications.<\/jats:p>","DOI":"10.1515\/hf-2015-0258","type":"journal-article","created":{"date-parts":[[2016,3,23]],"date-time":"2016-03-23T18:01:06Z","timestamp":1458756066000},"page":"819-828","source":"Crossref","is-referenced-by-count":30,"title":["Chemical characterization of the bark of<i>Eucalyptus urophylla<\/i>hybrids in view of their valorization in biorefineries"],"prefix":"10.1515","volume":"70","author":[{"given":"Caroline","family":"Sartori","sequence":"first","affiliation":[{"name":"Universidade Federal de Lavras, Departamento de Ci\u00eancias Florestais, Lavras, Minas Gerais, Brazil"}]},{"given":"Graciene","family":"da Silva Mota","sequence":"additional","affiliation":[{"name":"Universidade Federal de Lavras, Departamento de Ci\u00eancias Biol\u00f3gicas, Lavras, Minas Gerais, Brazil"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7637-3466","authenticated-orcid":false,"given":"Joana","family":"Ferreira","sequence":"additional","affiliation":[{"name":"Centro de Estudos Florestais, Instituto Superior de Agronomia, Universidade de Lisboa, Portugal"}]},{"given":"Isabel","family":"Miranda","sequence":"additional","affiliation":[{"name":"Centro de Estudos Florestais, Instituto Superior de Agronomia, Universidade de Lisboa, Portugal"}]},{"given":"F\u00e1bio Akira","family":"Mori","sequence":"additional","affiliation":[{"name":"Universidade Federal de Lavras, Departamento de Ci\u00eancias Florestais, Lavras, Minas Gerais, Brazil"}]},{"given":"Helena","family":"Pereira","sequence":"additional","affiliation":[{"name":"Centro de Estudos Florestais, Instituto Superior de Agronomia, Universidade de Lisboa, Portugal"}]}],"member":"374","published-online":{"date-parts":[[2016,3,23]]},"reference":[{"key":"2023012402344040593_j_hf-2015-0258_ref_001_w2aab2b8d118b1b7b1ab2b1b1Aa","unstructured":"ABRAF (2013) Statistical yearbook of Brazilian Association of Planted Forest Producers base year 2012. 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