4233
The results showed that the [ 6S ] form had higher antioxidant activity than its racemate form in the TEAC assay at all pHs , with similar values in the FRAP and ORAC assays .
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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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