17792
The results suggested that both the EtOAc extract and berberine were able to activate PPAR alpha / beta / gamma , and Rhizoma Coptis contains potential natural agonists of PPARs besides berberine .
 EtOAc, berberine, berberine
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 EtOAc, berberine, berberine