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      Drought stress enhances nutritional and bioactive compounds, phenolic acids and antioxidant capacity of Amaranthus leafy vegetable

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          Abstract

          Background

          Bioactive compounds, vitamins, phenolic acids, flavonoids of A. tricolor are the sources of natural antioxidant that had a great importance for the food industry as these detoxify ROS in the human body. These natural antioxidants protect human from many diseases such as cancer, arthritis, emphysema, retinopathy, neuro-degenerative cardiovascular diseases, atherosclerosis and cataracts. Moreover, previous literature has shown that drought stress elevated bioactive compounds, vitamins, phenolics, flavonoids and antioxidant activity in many leafy vegetables. Hence, we study the nutritional and bioactive compounds, phenolic acids, flavonoids and antioxidant capacity of amaranth under drought stress for evaluation of the significant contribution of these compounds in the human diet.

          Results

          The genotype VA3 was assessed at four drought stress levels that significantly affected nutritional and bioactive compounds, phenolic acids, flavonoids and antioxidant capacity. Protein, ash, energy, dietary fiber, Ca, K, Cu, S, Mg, Mn, Mo, Na, B content, total carotenoids, TFC, vitamin C, TPC, TAC (DPPH), betacarotene, TAC (ABTS +), sixteen phenolic acids and flavonoids were remarkably increased with the severity of drought stress. At moderate and severe drought stress conditions, the increments of all these components were more preponderant. Trans-cinnamic acid was newly identified phenolic acid in A. tricolor. Salicylic acid, vanilic acid, gallic acid, chlorogenic acid, Trans-cinnamic acid, rutin, isoquercetin, m-coumaric acid and p-hydroxybenzoic acid were the most abundant phenolic compounds in this genotype.

          Conclusions

          In A. tricolor, drought stress enhanced the quantitative and qualitative improvement of nutritional and bioactive compounds, phenolic acids, flavonoids and antioxidants. Hence, farmers of semi-arid and dry areas of the world could be able to grow amaranth as a substitute crop.

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          Most cited references34

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          Antioxidants, Oxidative Damage and Oxygen Deprivation Stress: a Review

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            Flavonoids and other phenolic compounds in Andean indigenous grains: Quinoa (Chenopodium quinoa), kañiwa (Chenopodium pallidicaule) and kiwicha (Amaranthus caudatus)

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              Phenolic acids, flavonoids and total antioxidant capacity of selected leafy vegetables

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                Author and article information

                Contributors
                umakanta@bsmrau.edu.bd
                soba@gifu-u.ac.jp
                Journal
                BMC Plant Biol
                BMC Plant Biol
                BMC Plant Biology
                BioMed Central (London )
                1471-2229
                26 October 2018
                26 October 2018
                2018
                : 18
                : 258
                Affiliations
                [1 ]ISNI 0000 0004 0370 4927, GRID grid.256342.4, The United Graduate School of Agricultural Science, Laboratory of Field Science, Faculty of Applied Biological Sciences, , Gifu University, ; Yanagido 1-1, Gifu, Japan
                [2 ]GRID grid.443108.a, Department of Genetics and Plant Breeding, Faculty of Agriculture, , Bangabandhu Sheikh Mujibur Rahman Agricultural University, ; Gazipur, 1706 Bangladesh
                Author information
                http://orcid.org/0000-0002-6814-8816
                Article
                1484
                10.1186/s12870-018-1484-1
                6203965
                30367616
                50baf9b2-a1dc-4a76-af4c-795c18ceac2f
                © The Author(s). 2018

                Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License ( http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver ( http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

                History
                : 28 March 2018
                : 15 October 2018
                Categories
                Research Article
                Custom metadata
                © The Author(s) 2018

                Plant science & Botany
                amaranthus tricolor,nutritional and bioactive compounds,phenolics,flavonoids,antioxidant activity,hplc-uv,lc-ms-esi,dpph,abts+,drought

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