22187
The application of films to an infant milk formula , previously inoculated with L . monocytogenes , inhibited the growth of bacteria 1 . 5log units the first day and showed sustained release , inhibiting 0 . 52 and 0 . 76log units , respectively , by the sixth day , while cocoa powder added directly did not produce any effect .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None