9667
This work studies the influence of some process variables ( percentage of sugar , pectin and citric acid , and time of thermal treatment ) on the volatile profile of these spreads with different formulations .
 Chemical: sugar; Chemical: citric acid
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: sugar; Chemical: citric acid