15668
In vitro antioxidant chemical methods , used as a first approach to evaluate potential agents to protect from lipid oxidation in foods , confirmed that the brown algae crude extracts , fractions and pure components are comparatively similar or superior to synthetic antioxidants .
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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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