6391
High Pressure Size Exclusion Chromatography ( HPSEC ) was used to monitor changes in peak areas of triacylglycerol ( TG ) polymer , monomer and ester hydrolysis products .
 Chemical: triacylglycerol; Chemical: ester
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: triacylglycerol; Chemical: ester