22319
Cell wall material from potato pulp by - product was used for the extraction of galactan - rich rhamnogalacturonan I ( RG - I ) type pectic polysaccharides using alkaline ( NaOH and KOH ) and enzymatic ( endopolygalacturonase from Aspergillus niger ) methods .
 Chemical: NaOH; Chemical: KOH
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: NaOH; Chemical: KOH