Antioxidant Activity and Phenolic Composition of Amaranth (<i>Amaranthus caudatus</i>) during Plant Growth
The antioxidant activity and phenolic composition of the aerial part of <i>Amaranthus caudatus</i> at seven stages of development were investigated. Total phenolic content, ABTS<sup>•+</sup>, DPPH<sup>•</sup>, and O<sub>2</sub><s...
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| Format: | Article |
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MDPI AG
2019-06-01
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| Series: | Antioxidants |
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| Online Access: | https://www.mdpi.com/2076-3921/8/6/173 |
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| author | Magdalena Karamać Francesco Gai Erica Longato Giorgia Meineri Michał A. Janiak Ryszard Amarowicz Pier Giorgio Peiretti |
| author_facet | Magdalena Karamać Francesco Gai Erica Longato Giorgia Meineri Michał A. Janiak Ryszard Amarowicz Pier Giorgio Peiretti |
| author_sort | Magdalena Karamać |
| collection | DOAJ |
| description | The antioxidant activity and phenolic composition of the aerial part of <i>Amaranthus caudatus</i> at seven stages of development were investigated. Total phenolic content, ABTS<sup>•+</sup>, DPPH<sup>•</sup>, and O<sub>2</sub><sup>•−</sup> scavenging activity, ferric-reducing antioxidant power (FRAP), and Fe<sup>2+</sup> chelating ability were evaluated. The phenolic profile was characterized by 17 compounds. Rutin was predominant in all growth stages, although its content, similar to the quantity of other phenolics, changed during the growth cycle. Flavonols were most abundant in the plants of early flowering and grain fill stages. In contrast, the highest content of hydroxycinnamic acid derivatives was found in the early vegetative stage. The results of antioxidant assays also showed significant differences among plant stages. Generally, the lowest antioxidant activity was found in the shooting and budding stages. Significantly higher activity was observed in amaranths in earlier (vegetative) and later (early flowering and grain fill) stages, suggesting that plants in these stages are valuable sources of antioxidants. |
| first_indexed | 2024-03-12T19:20:17Z |
| format | Article |
| id | doaj.art-c68da8a716124b8daad74e04366ad09d |
| institution | Directory Open Access Journal |
| issn | 2076-3921 |
| language | English |
| last_indexed | 2024-03-12T19:20:17Z |
| publishDate | 2019-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Antioxidants |
| spelling | doaj.art-c68da8a716124b8daad74e04366ad09d2023-08-02T05:14:36ZengMDPI AGAntioxidants2076-39212019-06-018617310.3390/antiox8060173antiox8060173Antioxidant Activity and Phenolic Composition of Amaranth (<i>Amaranthus caudatus</i>) during Plant GrowthMagdalena Karamać0Francesco Gai1Erica Longato2Giorgia Meineri3Michał A. Janiak4Ryszard Amarowicz5Pier Giorgio Peiretti6Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, Tuwima 10, 10-748 Olsztyn, PolandInstitute of Sciences of Food Production, National Research Council, 10095 Grugliasco, ItalyDepartment of Veterinary Sciences, University of Turin, 10095 Grugliasco, ItalyDepartment of Veterinary Sciences, University of Turin, 10095 Grugliasco, ItalyInstitute of Animal Reproduction and Food Research, Polish Academy of Sciences, Tuwima 10, 10-748 Olsztyn, PolandInstitute of Animal Reproduction and Food Research, Polish Academy of Sciences, Tuwima 10, 10-748 Olsztyn, PolandInstitute of Sciences of Food Production, National Research Council, 10095 Grugliasco, ItalyThe antioxidant activity and phenolic composition of the aerial part of <i>Amaranthus caudatus</i> at seven stages of development were investigated. Total phenolic content, ABTS<sup>•+</sup>, DPPH<sup>•</sup>, and O<sub>2</sub><sup>•−</sup> scavenging activity, ferric-reducing antioxidant power (FRAP), and Fe<sup>2+</sup> chelating ability were evaluated. The phenolic profile was characterized by 17 compounds. Rutin was predominant in all growth stages, although its content, similar to the quantity of other phenolics, changed during the growth cycle. Flavonols were most abundant in the plants of early flowering and grain fill stages. In contrast, the highest content of hydroxycinnamic acid derivatives was found in the early vegetative stage. The results of antioxidant assays also showed significant differences among plant stages. Generally, the lowest antioxidant activity was found in the shooting and budding stages. Significantly higher activity was observed in amaranths in earlier (vegetative) and later (early flowering and grain fill) stages, suggesting that plants in these stages are valuable sources of antioxidants.https://www.mdpi.com/2076-3921/8/6/173amaranthmorphological stagescavenging activityferrous ions chelating abilityreducing powerphenolic compoundsrutingrowth cycle |
| spellingShingle | Magdalena Karamać Francesco Gai Erica Longato Giorgia Meineri Michał A. Janiak Ryszard Amarowicz Pier Giorgio Peiretti Antioxidant Activity and Phenolic Composition of Amaranth (<i>Amaranthus caudatus</i>) during Plant Growth Antioxidants amaranth morphological stage scavenging activity ferrous ions chelating ability reducing power phenolic compounds rutin growth cycle |
| title | Antioxidant Activity and Phenolic Composition of Amaranth (<i>Amaranthus caudatus</i>) during Plant Growth |
| title_full | Antioxidant Activity and Phenolic Composition of Amaranth (<i>Amaranthus caudatus</i>) during Plant Growth |
| title_fullStr | Antioxidant Activity and Phenolic Composition of Amaranth (<i>Amaranthus caudatus</i>) during Plant Growth |
| title_full_unstemmed | Antioxidant Activity and Phenolic Composition of Amaranth (<i>Amaranthus caudatus</i>) during Plant Growth |
| title_short | Antioxidant Activity and Phenolic Composition of Amaranth (<i>Amaranthus caudatus</i>) during Plant Growth |
| title_sort | antioxidant activity and phenolic composition of amaranth i amaranthus caudatus i during plant growth |
| topic | amaranth morphological stage scavenging activity ferrous ions chelating ability reducing power phenolic compounds rutin growth cycle |
| url | https://www.mdpi.com/2076-3921/8/6/173 |
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