@prefix sampledescriptionvocabulary1: <https://purls.helmholtz-metadaten.de/skosmos/sdv/> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix ns0: <http://server/unset-base/> .

sampledescriptionvocabulary1:Substrate
  skos:prefLabel "Substrate" ;
  skos:definition """1. Any chemical that can be modified or consumed during a chemical reaction or biological process. (TIB, NCI Thesaurus OBO Edition). 2. A reactant that is consumed or changed in a chemical reaction. (MatPortal, MatOnto Ontology). 3. Chemical species being observed in a chemical reaction (Wikipedia). 4. A surface on which other chemical reactions or microscopy are performed (Wikipedia). 3. A chemical species, the reaction of which with some other chemical reagent is under observation (e.g. a compound that is transformed under the influence of a catalyst). The term should be used with care. Either the context or a specific statement should always make it clear which chemical species in a reaction is regarded as the substrate. (IUPAC). 4.1. The chemical entity whose conversion to a product or products is catalysed by one or several enzymes.
4.2. A solution or dry mixture containing all ingredients which are necessary for the growth of a microbial culture or for product formation.
4.3 Component in the nutrient medium, supplying the organisms with carbon (C-substrate), nitrogen (N-substrate), etc. (IUPAC)"""^^ns0:None ;
  skos:broader sampledescriptionvocabulary1:SamplePart ;
  a skos:Concept .

sampledescriptionvocabulary1:SamplePart
  skos:prefLabel "Sample part" ;
  a skos:Concept ;
  skos:narrower sampledescriptionvocabulary1:Substrate .