id	keyword
american_scientific_journal-5715	activity
american_scientific_journal-5715	pineapple
american_scientific_journal-5715	collagenase
american_scientific_journal-5715	inhibition
american_scientific_journal-5715	core
american_scientific_journal-5715	extract
american_scientific_journal-5715	ethanol
american_scientific_journal-5715	luteolin