5142
The major bacterial fermentation products are acetate , propionate and butyrate ; and the production of these tends to lower the colonic pH .
 Chemical: acetate; Chemical: propionate; Chemical: butyrate
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: acetate; Chemical: propionate; Chemical: butyrate