Monitoring oxidative stability and phenolic compounds composition of myrtle-enriched extra virgin olive during heating treatment by flame, oven and microwave using reversed phase dispersive liquid–liquid microextraction (RP-DLLME)-HPLC-DAD-FLD method

Dairi, Sofiane; Galeano-Dı́az, Teresa; Acedo-Valenzuela, María Isabel; Godoy-Caballero, M.P.; Dahmoune, Farid; Remini, Hocine; Madani, Khodir

doi:10.1016/j.indcrop.2014.11.035

Cited by 15 publications

(16 citation statements)

References 34 publications

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“…The interaction of ratio of microwave power (X 1 ) and exposition time (X 2 ) are presented in Figure 1-A3. The yield of TPC decreases with the increase of power, probably due to thermal degradation of phenolic compounds Dairi et al, 2015).…”

Section: Interactions Of the Studied Factorsmentioning

confidence: 99%

“…In this methodology, the response of interest is influenced by the independent variables or factors (Montgomery, 2004). Previous studies documented that the type of solvent, the temperature of extraction, exposition time, solid to liquid ratio, and microwave power influence the extraction of antioxidant molecules from fruits by MAE (Borges et al, 2011;Dairi et al, 2015). In this context, the aim of the present study was to utilize the antioxidants (total phenolic, flavonoids, anthocyanins, and tannins) present in the waste of pulp juçara processing.…”

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confidence: 97%

“…Several studies evaluated the influence of the extraction method on different matrices for the isolation of antioxidant compounds (Da Silva Campelo Borges et al, 2011;Dairi et al, 2015;Espinosa-Pardo, Martinez, & Martinez-Correa, 2014;Kukula-Koch et al, 2013;Li, Ngadi, & Ma, 2014). Nonetheless, different approaches and applications do not always provide the same results.…”

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confidence: 99%

“…In this way, microwave-assisted extraction (MAE), an emerging green technology, have demonstrated to be a promising method for the recovery of bioactive compounds such as total phenolics, flavonoids, anthocyanins, and tannins from plants. (Dahmoune et al, 2014;Dahmoune, Nayak, Moussi, Remini, & Madani, 2015;Dairi et al, 2015;Kim et al, 2012;Li et al, 2012Li et al, , 2014Zeković, Vladić, Vidović, Adamović, & Pavlić, 2016). Although, to the best of our knowledge the MAE has not been used for extraction of natural antioxidant compounds from E. edulis.…”

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confidence: 99%

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Natural Antioxidant Activity and Compounds Content from Wastes of Euterpe edulis Berries

Frasão¹,

Costa²,

Rodrigues³

et al. 2017

JAS

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The Euterpe edulis (Juçara) is native to Brazil, which berries and wastes present high antioxidant content. Therefore, in this study, microwave-assisted extraction (MAE) was investigated for antioxidant compounds extraction from E. edulis waste and maximized antioxidant activities using response surface methodology coupled with a central composite design. Three factors were observed: microwave power (400/500/600 W), exposition time (30/60/90 sec) and ethanol concentration solvent (40/60/80%). The extracts were characterized by determination of total phenolic (TPC), flavonoids (TFC), monomeric anthocyanins (TAC), tannins content (TTC), and in vitro antioxidant assay (AA%). The yield of TPC, TFC, TAC, and TTC varied at 595.43-2171.34 mg GAE·100 g DM , respectively. The optimal MAE parameters for TPC was microwave power 668.18 W, exposition time 110.45 s and aqueous ethanol concentration 93.64%, for TFC same parameters observed; though for TAC the different parameters were 532.28 W, and for TTC 9.55 s. However, for antioxidant activity, the parameters were 668.18 W, 110.45 s time and 64.41% of aqueous ethanol solvent. Therefore, this methodology was successfully applied for optimal extraction of total phenolics, flavonoids, monomeric anthocyanins and tannins from juçara waste and obtain optimal antioxidant activity.

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Section: Interactions Of the Studied Factorsmentioning

confidence: 99%

mentioning

confidence: 97%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Natural Antioxidant Activity and Compounds Content from Wastes of Euterpe edulis Berries

Frasão¹,

Costa²,

Rodrigues³

et al. 2017

JAS

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“…The chromatographic studies were performed as described in our previous report (Dairi, Galeano-Díaz, Acedo-Valenzuela, Godoy-Caballero, Dahmoune, Remini, et al, 2015) using an Agilent Model 1100 LC instrument (Agilent Technologies,Palo Alto,CA, USA) equipped with UV-Vis diode-array detector and rapid scan fluorescence spectrophotometer detector.The analytical data were evaluated using Chemstation software package. The analytical column employed was a 120 ODS 5 µm, 150 × 4.6 mm (Teknokroma, Barcelona, Spain).…”

Section: Identification and Quantification Of Mcpcs By Rp-hplcmentioning

confidence: 99%

Antioxidant effects of extra virgin olive oil enriched by myrtle phenolic extracts on iron-mediated lipid peroxidation under intestinal conditions model

Dairi

Carbonneau²,

Galeano-Dı́az

et al. 2017

Food Chemistry

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Chelating and free radicals scavenging activities of extra virgin olive oil (EVOO) enriched by Myrtus communis phenolic compounds (McPCs), α-tocopherol and Butylated hydroxytoluene (BHT) were evaluated using chemical assays, 2,2-diphenyl-1-picrylhydrazyl (DPPH) and Oxygen radical absorbance capacity (ORAC), and biological model as 2,2'-azobis (2-aminopropane) dihydrochloride (AAPH) or Fe/Ascorbic acid (Fe/AsA) system mediated peroxidation of l-α-phosphatidylcholine aqueous dispersions stabilized by bile salts (BS) under simulated intestinal conditions (pH 7.4). McPC-EEVOO increased significantly the neutralization of DPPH radical and AAPH-derived radicals in ORAC assay more than α-tocopherol and BHT. The phospholipid stability increased by a factor of 33.6%, 34.8%, 19.3% and 10.7% for myrtle microwave assisted extraction (MAE) and conventional extraction (CE) extracts, α-tocopherol and BHT, respectively, as compared to the control (EVOO without enrichment) in Fe/AsA system. But a slightly additive effect was observed when AAPH system was used. Our observation showed that McPCs may interact positively with EVOO to inhibit phospholipid peroxidation, and thus, McPC-EEVOO could be a potential functional food.

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Extraction and preconcentration of triazine pesticides using rapid, simple, and disperser solventless microextraction technique followed by gas chromatography–nitrogen phosphorous detection

Farajzadeh

Feriduni

Mogaddam

2017

Euro J Lipid Sci & Tech

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In this study, a simple, rapid, and efficient microextraction method followed by gas chromatography–nitrogen‐phosphorous detection has been applied for the extraction, preconcentration and determination of some triazine pesticides in edible oil samples. In this method, initially the oil sample is dissolved in hexane and then a few microliter of a less soluble organic solvent in hexane (extraction solvent) is added. The mixture is rapidly aspirated into a glass syringe and then is injected into a conical centrifuge tube for predetermined cycles to form a cloudy solution. Some experimental parameters that influence the extraction efficiency, such as type and volume of the extraction solvent, extraction numbers, and centrifuging rate and time are examined and optimized. Under optimum extraction conditions, the method showed low limits of detection and quantification between 0.02 to 0.09 and 0.07 to 0.30 μg/L, respectively. Extraction recoveries were in the range of 74–96%. Practical applications:This paper describes an analytical method that can be used by oil manufacturers for quality control purposes. A disperser solventless microextraction method and GC‐NPD were used to monitor triazine pesticides in different edible oils and propazine was found in corn oil. Triazine pesticides often contaminate the seeds and hence will be transferred into the oils during the extraction process. For trace determination of triazines in edible oil, 1 mL edible oil was diluted with 4 mL n‐hexane in conical tube and 40 µL DMSO was added. The mixture was rapidly aspirated into a 10‐mL glass syringe and then injected into the tube (4 times) to form a cloudy solution. The method showed low limits of detection and quantification between 0.02 to 0.09 and 0.07 to 0.30 µg/L, respectively. Extraction recoveries were in the range of 74–96%.

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Monitoring oxidative stability and phenolic compounds composition of myrtle-enriched extra virgin olive during heating treatment by flame, oven and microwave using reversed phase dispersive liquid–liquid microextraction (RP-DLLME)-HPLC-DAD-FLD method

Cited by 15 publications

References 34 publications

Natural Antioxidant Activity and Compounds Content from Wastes of Euterpe edulis Berries

Natural Antioxidant Activity and Compounds Content from Wastes of Euterpe edulis Berries

Antioxidant effects of extra virgin olive oil enriched by myrtle phenolic extracts on iron-mediated lipid peroxidation under intestinal conditions model

Extraction and preconcentration of triazine pesticides using rapid, simple, and disperser solventless microextraction technique followed by gas chromatography–nitrogen phosphorous detection

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