6759
The influence of pulsed electric field ( PEF ) treatment on the anthocyanin extraction yield ( AEY ) from purple - fleshed potato ( PFP ) at different extraction times ( 60 - 480 min ) and temperatures ( 10 - 40 degrees C ) using water and ethanol ( 48 % and 96 % ) as solvents has been investigated .
 anthocyanin, ethanol
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 anthocyanin, ethanol