4388
The AnV of the oil after vacuum drainage was lower by about 12 % , the total colour difference was improved by 14 % and viscosity was slightly reduced after 5 days of frying , compared to the values for oil that had been drained at atmospheric pressure .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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