id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
abc-542	Nikolova, Milena; Petrova, Mariya; Zayova, Ely; Vitkova, Antonina; Evstatieva, Ljuba	Comparative study of in vitro, ex vitro and in vivo grown plants of Arnica montana - polyphenols and free radical scavenging activity	2013	10	.pdf	application/pdf	5065	251	57	Plant extracts were diluted to a concentration of 1 mg mL–1, and aliquots of 0.5 mL were mixed with 2.5 mL of Folin–Ciocalteu reagent (previously diluted 10-fold with distilled wa- ter) and 2 mL of Na2CO3 (6%). The amount of flavonoids in plant extracts in rutin equivalents (RE) was calculated by the following formula: C = Absample × mcontrol × 10 / Abcontrol	cache/abc-542.pdf	txt/abc-542.txt