Assertion: alkaloid | /r/HasProperty | purified by acid-base extraction
Facets:
value: from crude extracts of these organisms
type: OTHER
Source sentences:
text: They can be purified from crude extracts of these organisms by acid-base extraction.
text: They can be purified from crude extracts of these organisms by acid-base extraction.
text: They can be purified from crude extracts of these organisms by acid-base extraction.
text: They can be purified from crude extracts of these organisms by acid-base extraction, or solvent extractions followed by silica-gel column chromatography.