Antioxidant Activity, Lipoxygenase Inhibitory Effect and Polyphenolic Compounds from Calotropis procera (Ait.) R. Br

Khasawneh, Mohammad A.; Elwy, Hanan Mohamed; Fawzi, Nael Mohamed; Hamza, Alaaeldin Ahmed; Chevidenka, Abdul Raheem; Hassan, Ahmed H.E.

doi:10.3923/rjphyto.2011.80.88

Cited by 24 publications

(11 citation statements)

References 22 publications

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“…Kulisic et al (11) , found that IC 50 = 0.50 and 1.8 × 10 -2 (g/l) for EO (air-dried flower tops and stalks) of Oregano (O. vulgare L) and BHT, respectively and by the same method, ethanolic extract of the aerial parts Oregano (O. heracleoticum) gives IC 50 = 12.8 μg/ml (70) , which means higher antioxidant activities than our marjoram oil. Our results indicated different values for IC 50 (71) . IC 50 signifies concentration (µg/ml) for a 50% inhibition.…”

Section: Dpph Radical Scavenging Methodscontrasting

confidence: 52%

Chemical Composition, Antioxidant and Antibacterial Activities of Lavender and Marjoram Essential Oils

2013

Egypt. J. Chem.

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N THIS STUDY we assessed the chemical composition, antioxidant …. and antibacterial activities of lavender (Lavandula angustifolia) and marjoram (Majorana hortensis) essential oils (EOs). Marjoram and lavender EOs showed promising antioxidant and free radical scavenging activities by 1,1-diphenyl-2-picryl-hydrasyl (DPPH) radical scavenging assay, ß-carotene bleaching test and 2,2′-azinobis (3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) assay. The three applied methods have shown that marjoram essential oil displays a strong antioxidant activity as well as good antibacterial activity.GC/MS analyses indicated that L. angustifolia essential oil consisted of linalool as the most abundant component (37.65%), followed by linalyl acetate (15.29 %), α-muurolene (8.59 %), alloaromadendrene (6.03%), ß-phellandrene (4.39%) and other minor components. On the other hand, M. hortensis essential oil consisted of terpinen-4-ol (48.98%), α-terpinol (11.75%), γ-terpinene (9.64%), spathulenol (3.51%), linalyl acetate (2.58 %) and sabinene hydrate (2.30%) as the main constituents.Lavender and marjoram herbs presented considerable content of carbohydrates, protein, amino acids, crude fiber, EOs and minerals (Fe, Zn and Cu), low values of fats, ash and absence of mycotoxins.

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Section: Dpph Radical Scavenging Methodscontrasting

confidence: 52%

Chemical Composition, Antioxidant and Antibacterial Activities of Lavender and Marjoram Essential Oils

2013

Egypt. J. Chem.

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“…Under the assay conditions (Figure 4), among the four extracts, the most potent antioxidant activity was detected in leaves extract. The powerful antioxidant activity of leaves and fruits extract can be attributed mainly to the phenolic content, due to their hydroxyl groups, and/or to flavonoids which react with the DPPH radical by hydrogen atom donation to free radicals [47], while a highly positive correlation between total phenolic content and antioxidant activity was established in case of many plant species [48, 49]. …”

Section: Resultsmentioning

confidence: 99%

Nutritional Composition and Phytochemical, Antioxidative, and Antifungal Activities ofPergularia tomentosaL.

Lahmar¹,

Belghith

Abdallah³

et al. 2017

BioMed Research International

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Crude extracts from a medicinal Tunisian plant, Pergularia tomentosa L., were the investigated natural material. Butanolic extract of roots analyzed with IR spectra revealed the presence of hydroxyl, alcoholic, and carboxylic groups and sugars units. Analysis of some secondary metabolites, total phenolic, flavonoids, flavonols, and procyanidins, was performed using different solvents following the increased gradient of polarity. Fruits and leaves contained the highest amounts of all these compounds. Antioxidant properties were evaluated by the determination of free radical scavenging activity and the reducing power of methanolic extracts. Fruits and leaf extracts were the most powerful antioxidants for the two-assay in vitro system. Stems and fruits extracts exhibit an antifungal activity against Fusarium oxysporum f. sp. lycopersici which could become an alternative to synthetic fungicide to control Solanum species fungal diseases.

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“…Phytochemicals have been of great interest as a source of natural antioxidants used for health promotion, food preservation, food flavouring and cosmetics since they are safer to consumption and environmentally more friendly than their synthetic counterparts (Khasawneh et al, 2011). Plants are known for their health protective effect mostly attributed to their polyphenolic components which possess antioxidant activity against the reactive oxygen species (ROS).…”

Section: Introductionmentioning

confidence: 99%

“…ROS induce oxidative damage to biomolecules like lipids, nucleic acids, proteins and carbohydrates. This damage leads to many diseases such as rheumatoid, arteriosclerosis, cirrhosis, diabetes and cancer (Khasawneh et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Simmondsia chinensis: A rich source of bioactive flavonoids and lignans

Abdel‐Mageed

Bayoumi

Radwan

et al. 2014

Industrial Crops and Products

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Antioxidant Activity, Lipoxygenase Inhibitory Effect and Polyphenolic Compounds from Calotropis procera (Ait.) R. Br

Cited by 24 publications

References 22 publications

Chemical Composition, Antioxidant and Antibacterial Activities of Lavender and Marjoram Essential Oils

Chemical Composition, Antioxidant and Antibacterial Activities of Lavender and Marjoram Essential Oils

Nutritional Composition and Phytochemical, Antioxidative, and Antifungal Activities ofPergularia tomentosaL.

Simmondsia chinensis: A rich source of bioactive flavonoids and lignans

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