22289
Thermo - oxidative degradation of sterols at temperature typical for frying leads to the formation of oxidised derivatives , fragmented sterols and oligomers .
 Chemical: sterols; Chemical: sterols
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: sterols; Chemical: sterols