Bioactive profile, dehydration, extraction and application of the bioactive components of olive leaves

Rahmanian, Neda; Jafari, Seid Mahdi; Wani, Touseef Ahmed

doi:10.1016/j.tifs.2014.12.009

Cited by 225 publications

(197 citation statements)

References 193 publications

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“…The maximum theoretical yield of the TP content determined by the Folin-Ciocalteu assay was 250.2 mg EAG 100 g -1 dry weight of olive leaf extract (Hayes et al, 2011;Rahmanian et al, 2015), a value that is very close to the maximum obtained in the present study for OPWE.…”

Section: Resultssupporting

confidence: 88%

“…In addition, several studies have shown that TP is strongly influenced by environmental conditions (Kiritsakis et al, 2010;Bilgin and Şahin, 2013;Rahmanian et al, 2015).…”

Section: Resultsmentioning

confidence: 99%

“…In both studies, the olive leaf extracts showed lower values of IC 50 , i.e., higher antioxidant activity, than the best OPWE obtained from dry OPW (93.3 μg mL -1 ). The differences in the antioxidant activity by DPPH radical quenching are probably due to the different extraction methods used and the origins in the olive tree (Kiritsakis et al, 2010;Bilgin and Şahin, 2013;Rahmanian et al, 2015;Xie et al, 2015).…”

Section: Resultsmentioning

confidence: 99%

“…Pharmacologically, they present anti-inflammatory activity, lowering of cholesterol (they help regulate total serum cholesterol), and antiviral, antiischemic, neuro-protective, and cardio-protective properties. The HT extracted from olive leaves was recognized in 2011 as a compound with high added value by the European Food Safety Authority (EFSA) (Pérez-Bonilla et al, 2006;Altiok et al, 2008;Peralbo-Molina and Luque de Castro, 2013;Rahmanian et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

“…Many of the synthetic antioxidants have been associated with the development of degenerative diseases (Pérez-Bonilla et al, 2011;Rahmanian et al, 2015). Some applications of olive leaf extract have been evaluated in beef to control its microbial load, and olive leaf extracts are also used for the enrichment of table olives and have been added to vegetable oils to inhibit their oxidation (Kiritsakis et al, 2010;Malheiro et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

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Effect of the Olive Pruning Wood Extract on Lipid Oxidation in Sunflower Oil.

González

Zúñiga

Olea‐Azar

et al. 2017

Ciencia e investigación agraria

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The production of high quality natural Antioxidants from olive pruning wood extracts and their application to prevent the oxidation of vegetable oils were evaluated. The production of antioxidants from branches of olive pruning wood (OPW) using Soxhlet extraction and ethanol was optimized, evaluating the use of dry and fresh OPW, with extraction of an initial mass of 1 and 3 g and extraction times of 2, 4 and 8 h. For the evaluation of the antioxidant properties of the OPW extracts (OPWEs), the 2.2-diphenyl-1-picrylhydrazyl (DPPH) radical bleaching and ORAC-FL assays were performed. Additionally, the phenolic profile of the OPWEs was obtained by using HPLC-DAD, and the total phenolic composition was quantified by the Folin-Ciocalteu assay. The OPWE obtained from dry OPW using 1 g of initial mass showed the highest content of phenolic compounds and better antioxidant capacity compared to the OPWE obtained from fresh OPW. Both extracts showed the same profiles, but the OPWE obtained from dry OPW showed twice the concentrations of catechin (1.00 g 100 g -1 OPWE) and oleuropein (12.59 g 100 g -1 OPWE). Low concentrations of optimized OPWE showed activity against lipid oxidation of sunflower oil, measured by the peroxide value obtained by microwave and forced air oven heating. Under high temperature conditions and concentrations, the results suggest that OPWE may present the opposite effect.

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Section: Resultssupporting

confidence: 88%

“…In addition, several studies have shown that TP is strongly influenced by environmental conditions (Kiritsakis et al, 2010;Bilgin and Şahin, 2013;Rahmanian et al, 2015).…”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Effect of the Olive Pruning Wood Extract on Lipid Oxidation in Sunflower Oil.

González

Zúñiga

Olea‐Azar

et al. 2017

Ciencia e investigación agraria

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Production of Phenol‐Enriched Olive Oil

Kiritsakis¹,

Gerasopoulos²

2017

Olives and Olive Oil as Functional Foods

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Olive‐derived biomass as a source of energy and chemicals

Ruiz

Romero‐García

Romero

et al. 2017

Biofuels Bioprod Bioref

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Olive trees are cultivated in more than 40 countries worldwide over more than 10 million hectares. In addition to olive oil, a large amount of biomass is produced annually. All this biomass must be adequately handled and disposed of. Conventional disposal methods include direct burning or spreading in fields, but this has economical costs and environmental concerns, as well as wasting a source of energy and chemicals. This review summarizes the most recent proposals for the use of biomass derived from olive tree cultivation and olive oil production processes. Biomass produced from pruning, leaves, olive stones and pomace, extracted olive pomace, and olive waste water are considered, and the main options for processing are reviewed according to recent advances in the literature. The biorefinery concept applied to olive‐derived biomass is also presented and representative works are discussed. © 2017 Society of Chemical Industry and John Wiley & Sons, Ltd

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Bioactive profile, dehydration, extraction and application of the bioactive components of olive leaves

Cited by 225 publications

References 193 publications

Effect of the Olive Pruning Wood Extract on Lipid Oxidation in Sunflower Oil.

Effect of the Olive Pruning Wood Extract on Lipid Oxidation in Sunflower Oil.

Production of Phenol‐Enriched Olive Oil

Olive‐derived biomass as a source of energy and chemicals

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