26554
Various thermal parameters including apparent activation energy ( Ea ) , pre - exponential factor ( A ) were worked out , and the fitness of data to different models describing the degradation kinetics of polysaccharides was studied .
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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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