Evaluation of natural antioxidants of Leuzea carthamoides as a result of a screening study of 88 plant extracts from the European Asteraceae and Cichoriaceae

Figures & data

Table I.  Tested plants and their DPPH radical scavenging activity.

Plant	IC50 (mg/mL)	Plant	IC50 (mg/mL)
Adonis aestivalis (flow. herb)	0.477	Helianthus annuus (flower)	0.224
Achillea collina (flow. herb)	0.142	Helianthus annuus (leaves)	0.117
Achillea millefolium (flow. herb)	0.095	Hieracium aurantiacum (flow. herb)	0.174
Achillea millefolium (flower)	0.173	Hieracium cespitosa (flow. herb)	0.129
Achillea nobilis (flow. herb)	0.117	Hieracium laevigatum (flow. herb)	0.233
Achillea ptarmica (flow. herb)	0.057	Hieracium murorum (flow. herb)	0.132
Achillea ptarmica (flower)	0.073	Inula helenium (flow. herb)	0.087
Antenaria dioica (flow. herb)	0.096	Inula hirta (flow. herb)	0.049
Arctium lappa (flower)	0.245	Inula oculus-christi (flow. herb)	0.182
Arctium lappa (leaves)	0.221	Inula racemosa (leaves)	0.079
Arctium tomentosum (flow. herb)	0.216	Inula salicifolia (flow. herb)	0.048
Arnica montana (flow. herb)	0.113	Lactuca serricola (flow. herb)	0.188
Artemisia absinthium (herb)	0.160	Leontodon lecipidus (flow. herb)	0.201
Artemisia dracunculus (herb)	0.088	Leuzea carthamoides (leaves)	0.046
Artemisia pontica (herb)	0.053	Matricaria discoidea (flow. herb)	0.450
Artemisia vulgare (flow. herb)	0.109	Matricaria discoidea (flower)	0.174
Bellis perennis (flower)	0.257	Matricaria chamomilla (herb)	0.384
Bidens tripartita (flow. herb)	0.069	Petasites hybridus (flower)	0.059
Calendula officinale (flower)	0.505	Petasites hybridus (leaves)	0.050
Calendula officinale (herb)	0.412	Pilosella caespitosa (flow. herb)	0.134
Centaurea cyanus (flower)	0.542	Pyretrum corymbosum (flow. herb)	0.076
Centaurea jacea (flow. herb)	0.144	Scorzonera hispanica (flow. herb)	0.268
Centaurea triumpheti (flow. herb)	0.208	Senecio fuchsii (flow. herb)	0.121
Chamaemalum nobile (flower)	0.251	Senecio jacobaea (flow. herb)	0.183
Chamomilla recutita (flower)	0.152	Senecio jacobaea (flower)	0.278
Chrysanthemum leucanthemum (fl. herb)	0.060	Senecio jacobaea (herb)	0.207
Cichorium intybus (flower)	0.211	Senecio vulgaris (flow. herb)	0.214
Cirsium acaule (leaves)	0.193	Silybum marianum (leaves)	0.135
Cirsium arvense (flow. herb)	0.174	Solidago canadensis (flow. herb)	0.096
Cirsium carum (flow. herb)	0.308	Solidago canadensis (flower)	0.084
Cirsium heterophyllum (flow. herb)	0.137	Solidago canadensis (herb)	0.120
Cirsium oleraceum (flower)	0.168	Solidago gigantea (flow. herb)	0.079
Cirsium oleraceum (leaves)	0.156	Solidago gigantea (flower)	0.061
Cirsium vulgare (flow. herb)	0.266	Solidago gigantea (herb)	0.142
Cnicus benedictus (flow. herb)	0.262	Sonchus oleraceus (flow. herb)	0.389
Cota tinctoria (flow. herb)	0.049	Tanacetum vulgare (flow. herb)	0.098
Echinacea purpurea (leaves)	0.061	Tanacetum vulgare (flower)	0.251
Echinops sphaerocephalus (flow. herb)	0.088	Tanacetum vulgare (leaves)	0.054
Erigeron canadensis (flow. herb)	0.071	Taraxacum officinale (flower)	0.192
Erigeron strigosus (flower)	0.199	Taraxacum officinale (leaves)	0.065
Eryngium caeruleum (flow. herb)	0.439	Tripeurospermum maritimum (herb)	0.267
Eupatorium cannabinum (flow. herb)	0.112	Tripleurospermum maritum (flower)	0.258
Galinsoga ciliata (flow. herb)	0.246	Tussilago farfara (flower)	0.125
Gnaphalium uliginosum (flow. herb)	0.090	Tussilago farfara (leaves)	0.059

Figure 1 Natural compounds isolated from L. carthamoides.

Figure 2 Extraction-fractionation scheme for the leaf extract of L. carthamoides and DPPH radical scavenging activity evaluation (IC₅₀, mg/mL) of the obtained fractions.

Table II.  DPPH radical scavenging activities (IC₅₀) of isolated compounds, trolox and quercetin.

Comp.	1	2	3	4	5	6	7	trolox	quercetin
IC50 (μM)	769.6	76.4	99.1	95.6	29.9	∼	163.0	27.8	25.3

Table III.  Results of FRAP values of isolated compounds and trolox at 4 and 60 min.

Comp.	1	2	3	4	5	6	7	trolox
FRAP value 4 min (μM)	1.2	15.1	31.6	15.7	33.1	∼	23.3	19.3
FRAP value 60 min (μM)	2.6	27.9	63.6	32.7	65.3	∼	52.0	20.2