Bioactive Phytochemicals and Quenching Activity of Radicals in Selected Drought-Resistant Amaranthus tricolor Vegetable Amaranth

Sarker, Umakanta; Oba, Shigeyuki; Erċışlı, Sezai; Assouguem, Amine; Alotaibi, Amal; Ullah, Riaz

doi:10.3390/antiox11030578

Cited by 69 publications

(46 citation statements)

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“…Sarker and Oba [ 150 , 161 ] detected a parallel tendency. Positive and significant correlations were observed with ascorbic acid, TP, AP (DPPH), TF, β-carotene, and AP (ABTS + ), which was corroborative to past results on salt-induced amaranth [ 218 , 219 , 220 , 221 , 222 ]. The positive and noteworthy correlations of ascorbic acid, AP (DPPH), TP, β-carotene, TF, and AP (ABTS + ) suggested that β-carotene, TF, ascorbic acid, and TP had strong AP.…”

Section: Resultssupporting

confidence: 90%

Colorant Pigments, Nutrients, Bioactive Components, and Antiradical Potential of Danta Leaves (Amaranthus lividus)

et al. 2022

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In the Indian subcontinent, danta (stems) of underutilized amaranth are used as vegetables in different culinary dishes. At the edible stage of the danta, leaves are discarded as waste in the dustbin because they are overaged. For the first time, we assessed the colorant pigments, bioactive components, nutrients, and antiradical potential (AP) of the leaves of danta to valorize the by-product (leaf) for antioxidant, nutritional, and pharmacological uses. Leaves of danta were analyzed for proximate and element compositions, colorant pigments, bioactive constituents, AP (DPPH), and AP (ABTS+). Danta leaves had satisfactory moisture, protein, carbohydrates, and dietary fiber. The chosen danta leaves contained satisfactory magnesium, iron, calcium, potassium, manganese, copper, and zinc; adequate bioactive pigments, such as betacyanins, carotenoids, betalains, β-carotene, chlorophylls, and betaxanthins; and copious bioactive ascorbic acid, polyphenols, flavonoids, and AP. The correlation coefficient indicated that bioactive phytochemicals and colorant pigments of the selected danta leaves had good AP as assessed via ABTS+ and DPPH assays. The selected danta leaves had good ROS-scavenging potential that could indicate massive possibilities for promoting the health of the nutraceutical- and antioxidant-deficit public. The findings showed that danta leaves are a beautiful by-product for contributing as an alternate origin of antioxidants, nutrients, and bioactive compounds with pharmacological use.

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Section: Resultssupporting

confidence: 90%

Colorant Pigments, Nutrients, Bioactive Components, and Antiradical Potential of Danta Leaves (Amaranthus lividus)

et al. 2022

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“…The increment of pigment displayed a drastic decline in TC and β-carotene. Significant positive relationships of β-carotene and TC with TP, TA (ABTS + and DPPH), and TF recommended that β-carotene and TC displayed a strong capacity to quench radicals which were corroborative of the previous amaranths [ 81 , 82 , 83 ]. β-carotene and TC were associated positively among them.…”

Section: Resultssupporting

confidence: 65%

Characterization of Phytochemicals, Nutrients, and Antiradical Potential in Slim Amaranth

et al. 2022

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Slim amaranth (A. hybridus) having a C4 photosynthetic pathway with diverse variability is a climate-resilient crop that tolerates abiotic stresses. Owing to the high productivity of the C4 pathway, we have been searching for suitable accessions as preferable high-yielding antioxidant-enriched cultivars with ample bioactive compounds, or for future breeding programs to improve bioactive compounds as a source of natural antioxidants. Twelve slim amaranth accessions were tested for nutraceuticals, phytopigments, radical scavenging capacity (two different assays), vitamins, total flavonoids, and total polyphenols content. Slim amaranth leaves contained ample dietary fiber, protein, moisture, and carbohydrates. The current investigation demonstrated that there was remarkable K, Ca, Mg (8.86, 26.12, and 29.31), Fe, Mn, Cu, Zn, (1192.22, 275.42, 26.13, and 1069.93), TP, TF (201.36 and 135.70), pigments, such as chlorophyll a, ab, and b, (26.28, 38.02, and 11.72), betalains, betaxanthins, betacyanins (78.90, 39.36, 39.53,), vitamin C (1293.65), β-carotene, total carotenoids, (1242.25, 1641.07), and TA (DPPH, ABTS+) (27.58, 50.55) in slim amaranth leaves. The widespread variations were observed across the studied accessions. The slim amaranth accessions, AH11, AH10, and AH12, exhibited high profiles of antioxidants including high potentiality to quench radicals and can be selected as preferable high-yielding antioxidant-enriched cultivars with ample bioactive compounds. Phytopigments, flavonoids, vitamins, and phenolics of slim amaranth leaves showed intense activity of antioxidants. Slim amaranth could be a potential source of proximate phenolics, minerals, phytopigments, vitamins, and flavonoids for gaining adequate nutraceuticals, bioactive components, and potent antioxidants. Moderate yielding accessions having moderate phytochemicals can be used to develop new high-yielding antioxidant-enriched cultivars for future breeding programs to improve bioactive compounds as a source of natural antioxidants.

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“…Sodium can be involved in Na-K synergism for the cytokinin-dependent betacyanin synthesis (Elliot, 1979). Sarker et al (2022) also reported that under drought stress conditions, the amount of nutrients in amaranth leaves increases, which is consistent with the recent findings.…”

Section: Discussionsupporting

confidence: 84%

Drought Effects on Mineral Composition of the Leaves and Seeds of Amaranthus Tricolor and Amaranthus Cruentus

TETYANNIKOV¹,

MOTYLEVA²,

GINS³

et al. 2022

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In global climate change, drought stress is one of the environmental restraining factors that can significantly influence the growth and development of crop plants. Drought stress conditions can also cause undesirable changes in plant physiological and metabolic processes. The influence of soil drought on the mineral composition of leaves and seeds of two species of amaranth (Amaranthus tricolor L. and Amaranthus cruentus L.) with С4-type of photosynthesis was studied through energy dispersive spectrometry (ESD). The recent investigations were carried out during the years 2020–2022 at the Department of Genofonde and Bioresources of Plants, Federal Scientific Center for Horticulture, Moscow, Russia. The research results showed the leaves of both amaranth with major elements, i.e., K (11.23–15.33), Ca (5.15–7.61), P (3.91–3.92), Mg (2.81–3.36), and Cl (1.86–2.29), whereas, relatively lower values were recorded for Fe (0.05–0.48), and Na (0.07–0.11) mass% respectively. Regarding amaranth plants seed composition, the major elements were K (13.86–13.97), P (7.02–9.76), Mg (3.78–5.64), Ca (3.31–4.78), Cl (2.81–5.30), and Mo (2.80–2.86) mass% respectively. In the species, A. tricolor, a strong correlation was observed between the elements, i.e., S-Cu, Mg-Si, Na-Cu, Na-S, Na-Ca, Na-Si, and Si-S in leaves, while in seeds, these were between Ca-Cu, Mg-Cl, Si-Mn, Ca-Mo, and Cl-Mn. In the other species of amaranth, A. cruentus, the elements viz., Mg-S, Mg-Mo, S-Mo, Mg-Cl, S-Cl, Cl-Mo, Cl-P, P-S, Si-Cl, Ca-Mo, S-Ca, Mg-Ca, Mg-P, P-Mo, and Mg-Si in leaves, while Ni-Cu, Mg-P, Si-P, and Si-Cl in seeds also showed strong relationship. Effects of drought led to a weakening of these ties and the formation of new ones. The accumulation of mineral elements in the leaves of amaranth plants varies from species to species under drought conditions, and A. tricolor cv. Valentina was found most resistant to drought conditions.

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Bioactive Phytochemicals and Quenching Activity of Radicals in Selected Drought-Resistant Amaranthus tricolor Vegetable Amaranth

Cited by 69 publications

References 50 publications

Colorant Pigments, Nutrients, Bioactive Components, and Antiradical Potential of Danta Leaves (Amaranthus lividus)

Colorant Pigments, Nutrients, Bioactive Components, and Antiradical Potential of Danta Leaves (Amaranthus lividus)

Characterization of Phytochemicals, Nutrients, and Antiradical Potential in Slim Amaranth

Drought Effects on Mineral Composition of the Leaves and Seeds of Amaranthus Tricolor and Amaranthus Cruentus

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