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Results suggest that stereoisomeric difference could influence the antioxidant activity of 5 - MTHF and hence should be taken into account when folates are added to foodstuffs to improve their nutritional value .
 Chemical: 5 - MTHF; Chemical: folates
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: 5 - MTHF; Chemical: folates