@prefix nalt: <https://lod.nal.usda.gov/nalt/> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix dc: <http://purl.org/dc/terms/> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
@prefix ns0: <https://lod.nal.usda.gov/naltv#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .

nalt:6430
  skos:prefLabel "pulpeo químico"@es, "chemical pulping"@en ;
  a <https://lod.nal.usda.gov/naltv#Topic>, skos:Concept ;
  skos:narrower nalt:24652 .

nalt:24652
  skos:prefLabel "elaboración de pulpa kraft"@es, "kraft pulping"@en ;
  a skos:Concept, <https://lod.nal.usda.gov/naltv#Topic> ;
  skos:inScheme <https://lod.nal.usda.gov/nalt-core>, <https://lod.nal.usda.gov/nalt> ;
  skos:closeMatch <http://id.loc.gov/authorities/subjects/sh85130334> ;
  skos:related nalt:17978 ;
  skos:hiddenLabel "kraft-pulping"@en ;
  skos:definition nalt:24652_def ;
  dc:created "2006-01-19"^^xsd:date ;
  ns0:marc001 "20291" ;
  skos:altLabel "sulphate pulping"@en, "sulfate pulping"@en ;
  skos:exactMatch <http://id.agrisemantics.org/gacs/C15369>, <http://id.cabi.org/cabt/113084> ;
  skos:broader nalt:6430 ;
  dc:modified "2012-11-30"^^xsd:date .

ns0:Topic
  rdfs:label "Topic"@en ;
  a owl:Class .

nalt:17978
  skos:prefLabel "celulosa de fibra larga"@es, "kraft pulp"@en ;
  a ns0:Product, skos:Concept ;
  skos:related nalt:24652 .

<https://lod.nal.usda.gov/nalt>
  rdfs:label "NALT Full"@en ;
  a skos:ConceptScheme .

nalt:24652_def
  rdf:value "La elaboración de pulpa kraft involucra la cocción (digestión) de los chips de madera en una solución alcalina (hidróxido de sodio, hidrosulfida, y sulfuro de sodio) por varias horas durante las cuales los químicos atacan la lignina de la madera. Después, la lignina disuelta se retira pero deja las fibras de celulosa. La pulpa kraft sin blanquear es de color café oscuro, por lo que antes de ser usada en muchos procesos para elaborar papel, debe someterse a varios procesos de blanqueo."@es, "Kraft pulping involves cooking (digesting) wood chips in an alkaline solution (sodium hydroxide, hydrosulfide, and sodium sulfide) for several hours during which time the chemicals attack the lignin in the wood. The dissolved lignin is later removed leaving behind the cellulose fibres. Unbleached kraft pulp is dark brown in colour, so before it can be used in many papermaking applications it must undergo a series of bleaching processes."@en ;
  dc:source "NAL Thesaurus Staff" ;
  a ns0:Definition .