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Abstract ▼ AI-Helper

The attempts to develop natural antioxidants have been made with aerial part of 16 Compositae species by analyzing their phenolic compound contents, scavenging activities on 1, 1-diphenyl-2-picrylhydrazyl (DPPH) and 2,2"-azino-bis-(3-ethylbenzthiazoline-6-sulphonic acid) (ABTS) radicals, ferrous ion...

The attempts to develop natural antioxidants have been made with aerial part of 16 Compositae species by analyzing their phenolic compound contents, scavenging activities on 1, 1-diphenyl-2-picrylhydrazyl (DPPH) and 2,2"-azino-bis-(3-ethylbenzthiazoline-6-sulphonic acid) (ABTS) radicals, ferrous ion chelating effects and inhibition effects on peroxidation of linoleic acids. Total polyphenol and flavonoid contents were highest in Matricaria recutica. Scavenging activity on DPPH and ABTS radicals were highest with extracts of Echinacea angustifolia and Serratula coronata var. insularis f. insularis, respectively. Aerial part extracts of all species showed lower DPPH scavenging activity than ascorbic acid and 2,6-Di-tert-butyl-4-methylphenol (BHT). But Serratula coronata var. insularis f. insularis demonstrated higher ABTS scavenging activity than ascorbic acid and BHT. In Hieracium pilosella, Echinacea angustifolia, Matricaria recutica extracts showed higher ABTS scavenging activity than BHT. Ferrous ion chelating effects was highest with Matricaria recutica extract, but the effects were much lower than ethylenediaminetetraacetic acid (EDTA). The inhibition activity in lipid peroxidation of linoleic acids was highest in Eupatorium japonicum with 90.06 % inhibition 4 days after reaction and 40.52% after 24 days. This demonstrated higher inhibition activity and longer lasting than BHT. Aerial part of Matricaria recutica for extraction source, rather than flower, has higher potential for antioxidant material. In conclusion, development of natural antioxidants in Compositae is possible by studying antioxidant activity of each species.

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