Correction to Chemical and Antioxidant Properties of Betalains

Slimen, Imen Belhadj; Najar, Taha; Abderrabba, Manef

doi:10.1021/acs.jafc.7b00512

Cited by 4 publications

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“…Results of the present study are in accordance with those of Esatbeyoglu et al (2014) , which show that the antioxidant activity, mainly due to electron donator properties, may be mediated by direct free radical scavenging properties of betacyanins. Indeed, the catechol structure and the imino and tetrahydropyridine groups stabilize the system for resonance, leading to a stable carbocation upon an electron abstraction ( Belhadj Slimen et al, 2017 ).…”

Section: Resultsmentioning

confidence: 99%

“…Moreover, through a mechanism known as hyperconjugation, betalains are able to reduce peroxyl and alkoxyl radicals, hindering the electron recovery. These antioxidant properties are affected by glycosylation, while they are positively influenced by acetylation ( Belhadj Slimen et al, 2017 ).…”

Section: Resultsmentioning

confidence: 99%

“…Finally, thanks to their charged and ionizable groups, as well as lipophilic moieties, betalains may behave as amphiphiles at physiological pH, and they can easily interact with membranes contributing to their stabilization ( Belhadj Slimen et al, 2017 ). These preliminary results were corroborated by the evaluation of the anti-inflammatory activity investigated by two simple in vitro cell-free assays: the BSA denaturation assay and the antiprotease activity test ( Table 2 ).…”

Section: Resultsmentioning

confidence: 99%

“…The first ones are derived from betalamic acid via conjugation with different amines and amino acids, whereas the second ones are derived by condensation of betalamic acid with cyclodihydroxyphenylalanine (cyclo-DOPA) ( Timoneda et al, 2019 ). Indicaxanthin and betanin (betanidine-5- O -β-glucoside), a betaxanthin and betacyanin, respectively, are the most representative compounds belonging to the betalain family ( Belhadj Slimen et al, 2017 ). These compounds, which confer a typical color to flowers, fruits, and roots, play a pivotal role in the attraction of pollinators, in photoprotection, in counteracting the herbivores’ attack, and in conferring tolerance to drought and salinity stress ( Jain et al, 2015 ).…”

Section: Introductionmentioning

confidence: 99%

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Prickly Pear Betalain-Rich Extracts as New Promising Strategy for Intestinal Inflammation: Plant Complex vs. Main Isolated Bioactive Compounds

et al. 2021

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Recently, many studies have highlighted the health effects of betalains beyond their use as food dyes. The present study investigated betalain-rich extracts with different colors and their main bioactive compounds in order to provide first evidence as a new promising strategy for intestinal inflammation management. Prickly pear betalain–rich extracts, obtained by a QuEChERS method, have been characterized by LC-DAD-ESI-MS/MS analysis. The potential role of betanin, indicaxanthin, and prickly pear extracts in counteracting the antioxidant and anti-inflammatory events was evaluated by several in vitro cell-free and cell-based assays. Indicaxanthin and betanin represent the most abundant compounds (≥22.27 ± 4.50 and 1.16 ± 0.17 g/100 g dry extract, respectively). Prickly pear extracts showed the strongest antioxidant and anti-inflammatory activities with respect to the pure betalains both on in vitro cell-free and cell-based assays, demonstrating the occurrence of synergistic activity, without any cytotoxicity or alteration of the barrier systems. The release of reactive oxygen species (ROS) and key inflammatory markers (IL-6, IL-8, and NO) was strongly inhibited by both betalains and even more by prickly pear extracts, which showed a similar and sometimes better profile than the reference compounds trolox and dexamethasone in counteracting the IL-1β–induced intestinal inflammation.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Prickly Pear Betalain-Rich Extracts as New Promising Strategy for Intestinal Inflammation: Plant Complex vs. Main Isolated Bioactive Compounds

et al. 2021

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Natural Colorants

Koop

Maciel

Soares

et al. 2022

Natural Additives in Foods

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Determination of selenium species in beetroot juices

Sentkowska

Pyrzyńska

2020

Heliyon

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Over the past years, there is an increasing demand for healthy, natural foods. Due to the high content of betalains, beetroots are widely used in the food industry as a natural colorant. In this study, beetroot juices are shown as a great source of selenium compounds. The juices were purchased from a local store and the ecological one was purchased form organic street market. The content of organic selenium species, as well as betalains, were evaluated using hydrophilic interaction liquid chromatography (HILIC) chromatography. The concentrations of selenomethionine (SeMet) and methylselenocysteine (MeSeCys) in analyzed juices were comparable except for juice from ecological cultivation. In that case, the concentration of SeMet is the highest of all studied juices, but simultaneously the concentration of MeSeCys was the lowest one. No traces of major inorganic species of Se, such as Se(IV) and Se(VI) was detected. The reducing power of juices evaluated by Folin-Ciocalteu assay was in range 50.78-166.7 mg GA/L. Juices obtained from beetroot from ecological cultivation showed the highest ability to scavenge the 1,1-diphenyl-2-picrylhydrazyl (DPPH) radicals. There was a correlation between the yellow pigment content and the presence of selenocysteine in studied juices.

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Correction to Chemical and Antioxidant Properties of Betalains

Cited by 4 publications

References 0 publications

Prickly Pear Betalain-Rich Extracts as New Promising Strategy for Intestinal Inflammation: Plant Complex vs. Main Isolated Bioactive Compounds

Prickly Pear Betalain-Rich Extracts as New Promising Strategy for Intestinal Inflammation: Plant Complex vs. Main Isolated Bioactive Compounds

Natural Colorants

Determination of selenium species in beetroot juices

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