Profiling and quantifying quercetin glucosides in onion (Allium cepa L.) varieties using capillary zone electrophoresis and high performance liquid chromatography

Caridi, Domenico; Trenerry, V. Craige; Rochfort, Simone; Duong, Samantha; Laugher, Dianne; Jones, Renee

doi:10.1016/j.foodchem.2006.12.063

Cited by 102 publications

(62 citation statements)

References 32 publications

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“…The main flavonols found were quercetin 4'-glucoside and quercetin 3,4'-diglucoside and the minor conjugates were isorhamnetin glucosides and quercetin 3-glucoside, these contents were higher than in other cultivars [36]. Main flavonols accounted for over 80% of total flavonols in whole onion, inner and outer scales and top-bottom, in agreement with the findings of Rohn et al [37].…”

Section: Phenolic Contentsupporting

confidence: 90%

Characterization of Industrial Onion Wastes (Allium cepa L.): Dietary Fibre and Bioactive Compounds

Benítez

Mollá

Martín‐Cabrejas

et al. 2011

Plant Foods Hum Nutr

240

142

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The food industry produces a large amount of onion wastes, making it necessary to search for possible ways for their utilization. One way could be to use these onion wastes as a natural source of high-value functional ingredients, since onion are rich in several groups of compounds, which have perceived benefits to human health. The objective of this work is to gain knowledge of any differences between the different onion wastes obtained from industry and non-commercial bulbs to use them as food ingredients rich in specific compounds. The results showed that brown skin and top-bottom could be potentially used as functional ingredient rich in dietary fibre, mainly in insoluble fraction, and in total phenolics and flavonoids, with high antioxidant activity. Moreover, brown skin showed a high concentration of quercetin aglycone and calcium, and top-bottom showed high concentration of minerals. Outer scales could be used as source of flavonols, with good antioxidant activity and content of dietary fibre. However, inner scales could be an interesting source of fructans and alk(en)yl cystein sulphoxides. In addition, discarded onions (cvs Recas and Figueres) could be used as a good source of dietary fibre, and cv Recas also as a source of phenolics compounds.

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Section: Phenolic Contentsupporting

confidence: 90%

Characterization of Industrial Onion Wastes (Allium cepa L.): Dietary Fibre and Bioactive Compounds

Benítez

Mollá

Martín‐Cabrejas

et al. 2011

Plant Foods Hum Nutr

240

142

View full text Add to dashboard Cite

show abstract

“…The resulting chromatograms were qualitatively similar, which is in good agreement with other reported studies [16][17][18][19][20]. Here, two major peaks were identified as quercetin 3,4'-diglucoside (1) Similar concentration of the two quercetin conjugates was previously observed in other studies [16][17][18][19], confirming that the two are indeed predominant flavonols in onions. However, in this work somewhat higher concentration of (1) and (2) was observed in A.…”

Section: Hplc Analysis Of Flavonols and Anthocyanin And Total Phenolisupporting

confidence: 91%

Chemical Composition and Biological Activity of A. cepa L. and A.  × cornutum (Clementi ex Visiani 1842) Methanolic Extracts

Fredotović¹,

Šprung²,

Soldo³

et al. 2017

Preprint

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Abstract:Here we report a comparative study of the pyhtochemical profile and a biological activity of the two onion extracts, namely A. cepa L. and A. × cornutum (Clementi ex Visiani 1842). Identification of flavonoids and anthocyanins and their individual quantities were determined by high performance liquid chromatography (HPLC). The potency of both extracts to scavenge free radicals was determined by DPPH (2,2'-diphenyl-1-picrylhydrazyl) radical-scavenging activity and oxygen radical absorbance capacity (ORAC) methods. DNA protective role was further tested by single-cell gel electrophoresis (COMET) assay and by Fenton's reagent causing double strand brakes on pUC19 plasmid. In the presence of both extracts, a significant decrease in the DNA damage was observed, which indicates a protective role of A. cepa and A. × cornutum on the DNA strand brakes. Additionally, cytotoxicity was tested on glioblastoma and breast cancer cell lines. The results showed that both extracts had antiproliferative effect, but the most prominent decrease in cellular growth was observed with glioblastoma cells.

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“…Effective solvent to extract polyphenols was methanol followed by the ethanol and finally the water. Methanol extraction gives a wide range of phenolic compounds including: anthocyanins, phenolic acids, catechins, flavanones, flavanols and procyanidins (Ross et al, 2009;Bleve et al, 2008;Caridi et al, 2007;Mattila and Kumpulainen, 2002). On the other hand, the ethanol extracted: anthocyanins, flavanols and free phenolic acids (Wang and Huang, 2004;Altiok et al, 2008;Bleve et al, 2008;Balas and Popa, 2007) and water extracted the procyanidins and flavanols (Diouf et al, 2009).…”

Section: Effect Of Solvent Naturementioning

confidence: 99%

Green extraction process of tannins obtained from Moroccan Acacia mollissima barks by microwave: Modeling and optimization of the process using the response surface methodology RSM

Rhazi

Hannache

Oumam

et al. 2019

Arabian Journal of Chemistry

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The effect of extraction conditions on polyphenols contents and condensed tannins by microwave-assisted extraction (MAE) was studied for the first time to our knowledge. Moroccan barks of Acacia mollissima was used to extract phenolic compounds. The variables studied are the following: power extraction, time extraction and solvent nature. Five powers extraction were tested: 150 W, 250 W, 300 W, 450 W and 600 W. A significant effect of power extraction on the extractable nature was proved by ANOVA and Student test. The yields were also affected by time extraction. Different solvent (water, ethanol, methanol and ethyl acetate) were tested to evaluate the best extraction solvent according to the extractable nature. Highest polyphenols contents were obtained with methanol. The proportion of this solvent, time extraction and power extraction were optimized using the response surface methodology (RSM). A face-centered composite design (FCCD) was applied to evaluate the effects of these variables on the polyphenols and condensed tannins contents. For each experiment, the extraction yield, the total polyphenolic contents and

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Profiling and quantifying quercetin glucosides in onion (Allium cepa L.) varieties using capillary zone electrophoresis and high performance liquid chromatography

Cited by 102 publications

References 32 publications

Characterization of Industrial Onion Wastes (Allium cepa L.): Dietary Fibre and Bioactive Compounds

Characterization of Industrial Onion Wastes (Allium cepa L.): Dietary Fibre and Bioactive Compounds

Chemical Composition and Biological Activity of A. cepa L. and A.  × cornutum (Clementi ex Visiani 1842) Methanolic Extracts

Green extraction process of tannins obtained from Moroccan Acacia mollissima barks by microwave: Modeling and optimization of the process using the response surface methodology RSM

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Profiling and quantifying quercetin glucosides in onion (Allium cepa L.) varieties using capillary zone electrophoresis and high performance liquid chromatography

Cited by 102 publications

References 32 publications

Characterization of Industrial Onion Wastes (Allium cepa L.): Dietary Fibre and Bioactive Compounds

Characterization of Industrial Onion Wastes (Allium cepa L.): Dietary Fibre and Bioactive Compounds

Chemical Composition and Biological Activity of A. cepa L. and A.&nbsp; &times; cornutum (Clementi ex Visiani 1842) Methanolic Extracts

Green extraction process of tannins obtained from Moroccan Acacia mollissima barks by microwave: Modeling and optimization of the process using the response surface methodology RSM

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Product

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Chemical Composition and Biological Activity of A. cepa L. and A. × cornutum (Clementi ex Visiani 1842) Methanolic Extracts