Edible flowers from Theobroma speciosum: Aqueous extract rich in antioxidant compounds

Mar, Josiana Moreira; Silva, Laiane Souza da; Moreira, Wagner Picanço; Biondo, Matheus Moraes; Pontes, Flávia Lada Degaut; Campos, Francinete Ramos; Kinupp, Valdely Ferreira; Campelo, Pedro Henrique; Sanches, Edgar Aparecido; Bezerra, Jaqueline de Araújo

doi:10.1016/j.foodchem.2021.129723

Cited by 8 publications

(7 citation statements)

References 16 publications

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“…The consumption of H. manihot L. flowers tea present a positive response to vasodilating activity, which is related to the presence of flavonoids [ 17 ]. The tea from edible T. speciosum flowers presented protocatechuic acid, quercetin, quercetin pentoside, and quercetin-3- O -glucoside [ 18 ]. Polyphenols are natural compounds found abundantly in vegetables and fruits, and they play a significant role in many physiological and metabolic processes [ 19 ], such as reducing the risk of neurodegenerative diseases, cancer, diabetes, and metabolic disorders associated with obesity [ 20 ].…”

Section: Resultsmentioning

confidence: 99%

“…The extract of H. acetosella flowers showed TPC content within a range of expected values for edible flowers of the Malvaceae family. The T. speciosum extract presented a slight higher TPC value (640 mg EAG/g) [18], and H. rosa-sinensis L. showed a lower value of antioxidant activity (DPPH 145 ± 3 mg TE/100 g DW) [21] than the extract of H. acetosella flowers. Several studies both in vitro and in vivo have shown that extracts of Hibiscus present a potent antioxidant effect due to its strong scavenging effect on reactive oxygen and free radicals [19,22].…”

Section: Physicochemical Characterization Centesimal Composition and ...mentioning

confidence: 86%

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Hibiscus acetosella: An Unconventional Alternative Edible Flower Rich in Bioactive Compounds

et al. 2023

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The interest in the consumption of edible flowers has increased since they represent a rich source of bioactive compounds, which are significantly beneficial to human health. The objective of this research was to access the bioactive compounds and antioxidant and cytotoxic properties of unconventional alternative edible flowers of Hibiscus acetosella Welw. Ex Hiern. The edible flowers presented pH value of 2.8 ± 0.00, soluble solids content of 3.4 ± 0.0 °Brix, high moisture content of about 91.8 ± 0.3%, carbohydrates (6.9 ± 1.2%), lipids (0.90 ± 0.17%), ashes (0.4 ± 0.0%), and not detectable protein. The evaluation of the scavenging activity of free radicals, such as 2,2-diphenyl-1-picryl-hydrazyl (DPPH) and 2,2’-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS), of the flower extract was better than the results observed for other edible flowers (507.8 ± 2.7 μM TE and 783.9 ± 30.8 μM TE, respectively) as well as the total phenolic composition (TPC) value (568.8 ± 0.8 mg GAE/g). These flowers are rich in organic acids and phenolic compounds, mainly myricetin, and quercetin derivatives, kaempferol, and anthocyanins. The extract showed no cytotoxicity for the cell lineages used, suggesting that the extract has no directly harmful effects to cells. The important bioactive compound identified in this study makes this flower especially relevant in the healthy food area due to its nutraceutical potential without showing cytotoxicity.

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Section: Resultsmentioning

confidence: 99%

Section: Physicochemical Characterization Centesimal Composition and ...mentioning

confidence: 86%

Hibiscus acetosella: An Unconventional Alternative Edible Flower Rich in Bioactive Compounds

et al. 2023

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“…The assays were performed as described previously [10]. The assessment of the radical scavenging capacity resulting from various treatment processes of T. guianensis juices was carried out employing the DPPH• radical method.…”

Section: Antioxidant Capacitymentioning

confidence: 99%

“…Gallic acid was used as the standard (y = 0.0026x + 0.2738, R 2 = 0.9986). Results were expressed as mg of gallic acid equivalents for g of juice (mg GAE/g) [10].…”

Section: Phenolics Compoundsmentioning

confidence: 99%

Enhancing Bioactive Compound Bioaccessibility in Tapirira guianensis Juices through Ultrasound-Assisted Applications

Mar,

Corrêa,

Ramos

et al. 2023

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This study evaluated the chemical profile and bioactive compounds in Tapirira guianensis juice samples under high-intensity ultrasound (US) effects. T. guianensis juices were produced and processed using the US with varying ultrasound energy (0, 0.9, 1.8, 2.7, and 3.6 kJ·cm−3) for 10 min. The treated juices were evaluated for total acidity, color, pH, total phenolic compounds, anthocyanins, carotenoids, antioxidant capacity, in vitro digestibility, as well as quantification of bioactive compounds by HPLC-DAD. The hydromethanolic extract obtained from T. guianensis exhibited the presence of two major categories of polyphenols, specifically galloylquinic acids and flavonols. Overall, US technology was responsible for inducing some negative changes, such as carotenoid degradation, but also some positive changes in the chemical profile of the beverages, such as increased phenolic content, improved antioxidant capacity, and increased anthocyanin content. However, the beneficial effects were prominent, thus opening opportunities to develop new functional beverages using this fruit with limited scientific studies.

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“…The results of the ABTS radical test by the Schiff bases were shown to be much better than those of DPPH•. Many factors like solubility of the compounds' stereoselectivity of the radicals or the indifferent testing systems have been conveyed to affect the aptitude of compounds to react and inhibit different radicals [37][38]. Hong et al [39] observed that some compounds that present ABTS scavenging response did not display DPPH scavenging ability.…”

Section: Abts Radical Scavenging Activitymentioning

confidence: 99%

Effect of Bridging Atom and Hydroxyl Position on the Antioxidant Capacity of Six Phenolic Schiff Bases

et al. 2022

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A series of new phenolic Schiff bases N,N-bis(2,3-dihydroxybenzyl-idene)-4,4’-diphenylmethane (3-DPM), and N,N-bis(2,5-dihydroxybenzylidene)-4,4’-diphenylmethane (5-DPM), for sulfide bridge N,N-bis(2,3-dihydroxybenzyl-idene)-4,4’-diphenyl sulfide (3-DPS), N,N-bis(2,5-dihydroxybenzylidene)-4,4’-diphenyl sulfide (5-DPS), N,N-bis(2,3-dihydroxybenzyl-idene)-4,4’-diphenyl disulfide (3-DPSS), and N,N-bis(2,5-dihydroxybenzylidene)-4,4’-diphenyl disulfide (5-DPSS) were synthesized by condensation of substituted 4,4’-diamino-bis-(4-aminophenyl) methane/sulfide with various substituted aldehydes. The synthesized molecules were characterized by physical data, elemental, IR and 1H-NMR analyses. The antioxidant ability of compounds was determined through the use in vitro assays such as DPPH• scavenging, ABTS, total antioxidant capacity (TAC), hydroxyl radical OH• scavenging, and reducing power capability. The antioxidant activity of the compounds increased slightly after changing the atom bridge and hydroxyl group position. The results showed that the compound 5-DPSS exhibited superior scavenging strength against DPPH (EC50 = 7.10 ± 0.16 μg/mL), whereas 3-DPSS showed the highest activity (EC50 = 1.36 ± 0.08 μg/mL) when inspected by ABTS in relation to butylated hydroxyanisole (BHA) (EC50 = 7.54 ± 0.67). The higher OH• activity was marked by the compound 5-DPS (EC50 = 44.9 ± 3.3 μg/mL) related to BHT at (EC50 = 98.73 ± 0.3 μg/mL). The compounds 5-DPM demonstrated remarkable activity both reducing power (EC50 = 53.2 ± 0.3 μg/mL), and TAC assay (EC50 = 620.0 ± 2.4 μg/mL). These results prove that the modification in hydroxyl group position affect the antioxidant ability of Schiff bases.

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Edible flowers from Theobroma speciosum: Aqueous extract rich in antioxidant compounds

Cited by 8 publications

References 16 publications

Hibiscus acetosella: An Unconventional Alternative Edible Flower Rich in Bioactive Compounds

Hibiscus acetosella: An Unconventional Alternative Edible Flower Rich in Bioactive Compounds

Enhancing Bioactive Compound Bioaccessibility in Tapirira guianensis Juices through Ultrasound-Assisted Applications

Effect of Bridging Atom and Hydroxyl Position on the Antioxidant Capacity of Six Phenolic Schiff Bases

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