Phenolic Compounds and Antioxidant Activity of <i>Olea europaea</i> L.                 Fruits and Leaves

Silva, S.; Gomes, L.; Leitão, F.; Coelho, Ana Varela; Boas, L. F. Vilas

doi:10.1177/1082013206070166

Cited by 245 publications

(188 citation statements)

References 31 publications

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“…Olive Leaves have been widely used in traditional remedies in European and Mediterranean countries such as Greece, Spain, Italy, France, Turkey, Israel, Morocco, and Tunisia [165]. Olive leaf contains large amounts of potentially useful phytochemicals, many of the same phenolics as the olive oil but in much higher concentration [166]. Olive leaf contains triterpenes (oleanolic, ursolic, and maslinic acid), flavonoids (luteolin, apigenin, and quercetin), caffeic acid, and tannins [167].…”

Section: Olive Tree (Olea Europaea)mentioning

confidence: 99%

Prevention of Nephropathy by Some Natural Sources of Antioxidants

Azab¹,

Albasha²,

Elsayed³

2017

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Nephrotoxicity is one of the most common kidney problems and occurs when the body is exposed to a drug or toxin. Natural sources of antioxidants may serve as a vital source of potentially useful new compounds for the development of an effective therapy to combat a variety of kidney problems. Natural antioxidants have a variety of biochemical actions such as inhibition of reactive oxygen species production, scavenging of free radicals. The present review aims to summarize the recent articles which studied some of the nephrotoxic agents, and alleviation of nephrotoxicity using of some natural products possessing antioxidant properties. Our review shows the oxidative damage and renal disorders induced in human and experimental animals by nephrotoxic agents such as gentamicin, alcohol, nicotine, adenine, glycerol, ethylene glycol, sodium nitrite, mercuric chloride, AlCl 3 , lead acetate, carbon tetrachloride (CCl 4 ), furosemide, carbendazim, diazinon, heat stress, and γ-radiation. Also, nephrotic disorders caused in diabetic rats, patients, cirrhotic ascetic patients, and ischemia-reperfusion. Administration of natural sources of antioxidants such as curcumin, garlic, fenugreek, parsley, peppermint, pomegranate, propolis, olive leaves, rosemary, and sesame attenuated both physiological and histopathological alterations induced in the kidney by the nephrotoxic agent and certain diseases. The nephroprotective effect of the former natural sources of antioxidants may be due to the enhancement of antioxidant activity and inhibition of tissue lipid peroxidation. It can be concluded that administration of curcumin, garlic, fenugreek, parsley, peppermint, pomegranate, propolis, olive leaves, rosemary, and sesame showed a remarkable kidney protection against nephrotoxic agents, and diseases induced renal dysfunctions in human and experimental animals. So, the present study recommended that the consumption of these natural sources of antioxidants may be useful for human exposure to nephrotoxic agents and patients who suffer from renal diseases.

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Section: Olive Tree (Olea Europaea)mentioning

confidence: 99%

Prevention of Nephropathy by Some Natural Sources of Antioxidants

Azab¹,

Albasha²,

Elsayed³

2017

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“…The structures of the tentatively identified compounds representing the major detected peaks and summarizing the obtained data for each of the detected chromatographic peak are discussed below. Compounds identification was based on retention data and ESI mass spectra and by comparison with literature data (Servili et al 1999, Silva 2006, Duran et al 1994, Luaces et al 2007, Owen et al 2003, Silva et al 2010, Cardoso et al 2005, Angelino et al 2011, Rodriguez et al 2008, Rodriguez et al 2008, Obied et al 2007, Lozano-Sanchez et al 2011. The identification of the detected compounds was based on the search of the main molecular ions detected in the both used polarities and also on some of the useful observed fragmentations.…”

Section: Analysis and Characterization Of Olive Stone Phenolic Compoundsmentioning

confidence: 99%

Characterization of phenolic compounds in olive stones of three moroccan varieties

Elbir

Es‐Safi

Amhoud

et al. 2015

Maderas, Cienc. tecnol.

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Phenolic compounds have a fundamental importance in the nutritional and sensorial characteristics of olive. In this study phenolic compounds extracted from olive fruit stones of three Moroccan registered cultivars were analyzed. The obtained results showed that the total amount of phenolic compounds varied according to the olive variety. The stones of the Moroccan Picholine variety were the richest in total phenolic compounds (11,32 mg of gallic acid equivalent (GAE)/g of dry weight (DW)) followed by Haouzia (4,55 mg GAE/g DW) and Menara (3,56 mg GAE/g DW). The qualitative analysis showed that the analyzed extracts were predominated by nuzhenide and its derivatives. Thus nuzhenide was observed among the major compound in the three studied cultivars. Its mono, di and tri 11-methyl oleoside adducts were also detected. Various compounds with the same molecular weight values and corresponding to nuzhenide or its derivatives were detected indicating the presence of various isomers.

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“…phenols) could be attributed to the naringenin. Nüzhenide, a compound identified by Silva et al (2006) in the olive seed, was found at the ion m/z 685 at low quantities (below 2% of the total polyphenols). Both compounds exhibited a good antioxidant potential McDonald et al, 2001).…”

Section: Ft-mir Infrared Spectra Analysismentioning

confidence: 99%