15761
For EB , BC and PC , pure blue colours devoid of a violet tint were exclusively observed for the phenolic extracts and at pH values >= 4 . 5 in model systems containing high methoxylated and amidated pectins , respectively .
 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