Chemical characterization and antioxidant capacity of red radish (Raphanus sativus L.) leaves and roots

Goyeneche, Rosario; Roura, Sara I.; Ponce, Alejandra Graciela; Vega‐Gálvez, Antonio; Quispe‐Fuentes, Issis; Uribe, Elsa; Scala, Karina Di

doi:10.1016/j.jff.2015.04.049

Cited by 125 publications

(82 citation statements)

References 41 publications

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“…Many factors affect polyphenol biosynthesis, such as plant breeding, ontogenetic stage, geographical region, climate, and postharvest handling. (Deng et al, ; Goyeneche et al, ), it is therefore common to find certain differences between the values reported by different authors for the same products. For example, Sosnowska, Redzynia, and Anders () reported TPC values between 134.8 and 171.4 mg GAE/100 g FW for red cabbage, and between 20.8 and 29.7 mg GAE/100 g FW for white cabbage, similar values to those found in this work.…”

Section: Resultsmentioning

confidence: 98%

Chemical characterization and functional properties of selected leafy vegetables for innovative mixed salads

et al. 2017

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The content of bioactive compounds and antioxidant capacity of nine vegetables of conventional and unconventional utilization in salad mixtures were studied. The total phenolic and flavonoid contents ranged between 39.6–148.5 mg GAE/100g FW and 76.3–217.4 mg QE/100g FW, respectively. Ascorbic acid content ranged between 16.4 and 198.8 mg AAE/100g FW. Antioxidant capacity was assessed using DPPH, FRAP, and ORAC methods; values were in the range of 48.9–245.8 mg TE/100g FW, 67.7–335.8 mg TE/100g FW, and 104.86–833.9 mg TE/100g FW, respectively. Red cabbage, beet greens, parsley, and rocket exhibited the highest antioxidant capacities. Catechin was the most abundant phenolic compound identified in the free fraction, and p‐coumaric acid, quercetin, and caffeic acid in the hydrolyzed fraction. Results suggested that the presence of these phenolics could be of great importance in preventing some chronic and degenerative diseases when regularly consumed. Nonconventional vegetables showed high antioxidant properties, therefore, it is important to promote their consumption. Practical applications Not all vegetables have the same phenolic composition, and not all phenolics have the same antioxidant capacity. Knowledge of the bioactive content and antioxidant capacity profile in each vegetable could be of interest to consumers and the food industry for selecting the more suitable leaves to make salad mixtures with high nutritional and functional values. These compounds can prevent some chronic‐degenerative diseases related to oxidative stress, so it is important introduce them regularly into the diet. Moreover, the evaluation of nontraditional vegetables is intended to bring consumers toward a new source of bioactive compounds, prompting their consumption, and providing added value to certain plant parts that are sometimes considered as waste products.

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Section: Resultsmentioning

confidence: 98%

Chemical characterization and functional properties of selected leafy vegetables for innovative mixed salads

et al. 2017

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“…Manganese (Mn) is known as an essential trace element which acts as cofactor for many enzymes. Zinc (Zn) is an essential component of thousands of proteins in plants, although it is toxic in excess quantities [32]. Similarly other minerals also play their role in functioning of human body.…”

Section: Discussionmentioning

confidence: 99%

“…All determinations were done in triplicate. The minerals were expressed as mg/100 g of fresh weight [32]. …”

Section: Methodsmentioning

confidence: 99%

Gaultheria trichophylla (Royle): a source of minerals and biologically active molecules, its antioxidant and anti-lipoxygenase activities

Alam

Saqib

Ashraf

2017

BMC Complement Altern Med

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Background Gaultheria trichophylla (Royle) is used as food and for treating many ailments in folk medicine especially against inflammation. The purpose of this in vitro study was to evaluate the ability of extracts of G. trichophylla as anti-oxidant and anti-inflammatory agent and for its mineral contents.MethodsPowdered plant material (100 g) was extracted with 100 ml each of methanol, chloroform, and n-hexane using soxhlet extractor. Antioxidant activity of methanol extract was assessed by DPPH radical scavenging and FRAP assays. Determination of enzyme inhibition activity was determined using 5-LOX inhibitory activity. Total phenolic and flavonoids contents were measured by Folin-Chicalteu and colorimeteric methods respectively. Minerals and heavy metals contents were determined using Atomic absorption spectrophotometer. Qualitative HPLC analysis were performed using some standard phenolic compounds.ResultsThe highest phenolic (17.5 ± 2.5 mg GA equivalent/g) and flavonoids (41.3 ± 0.1 mg QE equivalent/g) concentrations were found in methanol extract, which also showed more scavenging activity of 1, 1-diphenyl-2-picrylhydrazyl and ferrous reducing power with IC50 = 81.2 ± 0.2 and IC50 = 11.2 ± 0.1 μg/ml, respectively. The methanol and chloroform extracts showed best inhibition of 5-lipoxygenase enzyme with 90.5 ± 0.7% and 66.9 ± 0.1% at 0.5 mg/ml, respectively. G. trichophylla extract was also evaluated for mineral contents (K, Na, Ca, Mg, Fe, and Cu), and for chemical profiling of heavy metals (Cr, Pb, Cd, Co, Zn, Ni and Hg).ConclusionOur current findings suggest that this plant is good source of minerals and concentration of all heavy metals were within permissible limits. The results revealed that this ignored plant has great pharmaceutical and nutraceutical potential.

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“…The aerial parts of T. apollinea had significantly higher potassium concentrations. Potassium content in the body was reported to increase iron utilization and beneficial to control hypertension through body fluid [47]. While the remaining nutrients like Ni, Pb and Cr had negligible concentration levels in T. apollinea .…”

Section: Discussionmentioning

confidence: 99%

Medicinally active principles analysis of Tephrosia apollinea (Delile) DC. growing in the United Arab Emirates

et al. 2017

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Background Tephrosia apollinea is a leguminous plant and is native to southwest Asia, Arabia, northwestern India and northeast Africa. In traditional system, it is used for medicinal and coloring purpose. The present study aims to explore the phytochemical, proximate analysis, element contents and antioxidant potential of T. apollinea extract.MethodsThe phytochemical screening was done with qualitative methods. Proximate analysis and elemental composition were performed from powdered sample. In vitro antioxidant assays such as 1,1-diphenyl-2-picrylhydrazyl (DPPH) radicals and reducing power-scavenging assays were used for evaluating the antioxidant properties.ResultsQualitative screening of methanolic extract of T. apollinea showed the presence of alkaloids, phenolics, flavonoids, terpenoids, glycosides and saponins. The methanolic extract of T. apollinea exhibited a significant dose dependent inhibition of DPPH activity, with a 50% inhibition (IC50) at a concentration found to be 29.41 µg/ml, which was compared with standard GAE (IC50 = 31.09 μg/ml). The reducing power shows good linear relationship in both standard gallic acid (R2 = 0.956) and T. apollinea extract (0.984).ConclusionsThe results of our study clearly suggested that the methanolic extract of T. apollinea may serve as potential source of natural antioxidant for nutraceutical application.

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Chemical characterization and antioxidant capacity of red radish (Raphanus sativus L.) leaves and roots

Cited by 125 publications

References 41 publications

Chemical characterization and functional properties of selected leafy vegetables for innovative mixed salads

Chemical characterization and functional properties of selected leafy vegetables for innovative mixed salads

Gaultheria trichophylla (Royle): a source of minerals and biologically active molecules, its antioxidant and anti-lipoxygenase activities

Medicinally active principles analysis of Tephrosia apollinea (Delile) DC. growing in the United Arab Emirates

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