Antioxidant and Antimicrobial Activities of Ethanol Extracts of &lt;i&gt;Cynara Scolymus (Cynarae folium, Asteraceae&lt;/i&gt; Family)

Vamanu, Emanuel; Vamanu, Adrian; Sultana, Nasrin; Colceriu, S

doi:10.4314/tjpr.v10i6.11

Cited by 38 publications

(25 citation statements)

References 12 publications

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“…However, according to Kollia et al, 8 the extraction method also has a significant impact on the antioxidant properties of artichoke leaf extracts, while the contribution of total phenolics content to antioxidant properties depends on the tested assay. Similar findings have been reported by Coinu et al, 7 Pistón et al, 11 and Vamanu et al, 41 who suggested that antioxidant potency depends on the extraction method and solvents and is not related to total phenolics or individual phenolic subclass content.…”

Section: Resultssupporting

confidence: 89%

Leaf parts from Greek artichoke genotypes as a good source of bioactive compounds and antioxidants

et al. 2017

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Globe artichoke is an important vegetable in the Mediterranean diet. However, the marketable part of the plant constitutes a small portion of its total crop biomass and large amounts of waste are produced during its cultivation. In this study, the phenolic compound content and composition and the antioxidant activity of leaf parts [blades (SLB), petioles and midribs (SPM)] from various Greek artichoke genotypes were evaluated. The results showed significant variation in antioxidant activities and bioactive compound contents between the studied genotypes, with the leaf blades of most of the genotypes having a high content of flavonoids (mainly luteolin glycoside derivatives), which ranged between 49 and 78% of total phenolic compounds (TPC). In contrast, in petioles and midribs phenolic acids (mainly hydroxycinnamic acid derivatives) were the main phenolic compounds, ranging between 64 and 76% of TPC. The antioxidant activity of blades was significantly higher than that of petiole and midribs for all the genotypes and the tested assays. In conclusion, artichoke leaves (blades, petioles and midribs) of the studied genotypes showed different bioactive compound profiles and significant antioxidant properties, and could be further used in the food and nutraceuticals industries as a cheap source of phenolic compounds and antioxidants.

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Section: Resultssupporting

confidence: 89%

Leaf parts from Greek artichoke genotypes as a good source of bioactive compounds and antioxidants

et al. 2017

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“…Additionally, the maximum amount of polyphenol was also obtained from Morinda citrifolia and Cynara scolymus by using 75 wt. % ethanol/water solvent (Vamanu et al, 2011;Thoo et al, 2013). This higher TPC or TFC, may be ascribed to the fact that ethanol can effectively increase the permeability of the cell wall, and water can cause further solubility of polar substances in the cell (Saenkod et al, 2013).…”

Section: Discussionmentioning

confidence: 98%

Antioxidant and Tyrosinase Inhibitory Properties of Aqueous Ethanol Extracts from Monofloral Bee Pollen

Zhang

Wang

et al. 2015

Journal of Apicultural Science

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A b s t r a c t Bee pollen has been used for many years in traditional medicine and supplementary nutrients. Bee pollen is mainly composed of nutrients and bioactive substances which might act as potential antioxidants and tyrosinase inhibitors. In this study, 14 species of monofl oral bee pollen from China were collected to analyse their antioxidant and tyrosinase inhibitory properties. Our results revealed that virtually all the bee pollen samples possessed powerful antioxidant or tyrosinase inhibitory activities. These properties varied greatly depending on the fl oral species and extraction solvents. To extract phenolics of various species of bee pollen, the most effective solvent may be a solvent which is a 75 wt. % ethanol/water. Extracts of wuweizi, rape, phellodendron, apricot, and dandelion pollen had stronger antioxidant activities; on the other hand, those of apricot, camellia, and sunfl ower presented excellent tyrosinase inhibitory activities. In addition, we may have found a novel discovery: that apricot pollen exhibits both powerful antioxidant and strong tyrosinase inhibitory activities.

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“…Ethanol extracts were evaporated to dryness in a rotary evaporator (R 210; Buchi, Flawil, Switzerland) with a vacuum controller (V-850; Buchi) at 50 o C, 175 mbar, and 200 rpm. Selected concentrated solutions were redissolved in 80% ethanol to yield solutions containing 0.2-1.0 mg of extract per mL solvent (4,(6)(7)(8).…”

Section: Methodsmentioning

confidence: 99%

“…It has been used especially to isolate aromatic compounds (3) and is used less for natural extracts. In the last few years, research has demonstrated increasing degrees of biological activity in extracts from medicinal plants (4,5). However, little research has focused on obtaining natural products via alternative extraction methods.…”

Section: Introductionmentioning

confidence: 99%

Biological activity of fluidized bed ethanol extracts from several edible mushrooms

Vamanu

Sultana

2014

Food Sci Biotechnol

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In vitro antioxidant and anti-inflammatory activities of fluidized bed ethanol extracts of Pleurotus ostreatus PQMZ91109, PBS281009, M2191 (obtained from a laboratory greenhouse), Agaricus bisporus, Marasmius oreades, Craterellus cornucopioides, and Tuber melanosporum were investigated using free radical scavenging activities, metal chelating effects, inhibition of lipid peroxidation (inhibition of peroxyl radicals), xanthine oxidase, and lipoxygenase, and identification of antioxidant compounds. Levels of different compounds with antioxidant properties demonstrated the presence of more tocopherols than polyphenol carboxylic acids and flavones. HPLC showed that T. melanosporum extracts had high correlation values between levels of different active compounds and antioxidant assay results. Tocopherol levels were highly correlated (R 2 =0.867) with anti-inflammatory activities and inhibition of lipid peroxidation. Fluidized bed ethanol extracts from dried mushroom fruit bodies can be a source of products rich in tocopherols, and can constitute an important ingredient in food supplements.

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Antioxidant and Antimicrobial Activities of Ethanol Extracts of <i>Cynara Scolymus (Cynarae folium, Asteraceae</i> Family)

Cited by 38 publications

References 12 publications

Leaf parts from Greek artichoke genotypes as a good source of bioactive compounds and antioxidants

Leaf parts from Greek artichoke genotypes as a good source of bioactive compounds and antioxidants

Antioxidant and Tyrosinase Inhibitory Properties of Aqueous Ethanol Extracts from Monofloral Bee Pollen

Biological activity of fluidized bed ethanol extracts from several edible mushrooms

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