21768
The PP - PPI at pH 5 . 2 was characterised by the highest content of all amino acids , whereas , PP - PPI under alkaline conditions ( pH 10 . 5 ) caused decrease in these compounds .
 Chemical: amino acids
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: amino acids