id	keyword
american_scientific_journal-4628	activity
american_scientific_journal-4628	extract
american_scientific_journal-4628	solanum
american_scientific_journal-4628	lycopersicum
american_scientific_journal-4628	antioxidant
american_scientific_journal-4628	dpph
american_scientific_journal-4628	journal
american_scientific_journal-4628	vol