UV-B Radiation as Abiotic Elicitor to Enhance Phytochemicals and Development of Red Cabbage Sprouts
Background: The main objective of this study was to evaluate the effect of periodical UV-B illumination during red cabbage germination on morphological development and the phenolics and carotenoid accumulation. Methods: During a sprouting period of 10 days at 20 °C in darkness, seedlings received 5,...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-12-01
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| Series: | Horticulturae |
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| Online Access: | https://www.mdpi.com/2311-7524/7/12/567 |
| _version_ | 1797504049507991552 |
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| author | Lorena Martínez-Zamora Noelia Castillejo Francisco Artés-Hernández |
| author_facet | Lorena Martínez-Zamora Noelia Castillejo Francisco Artés-Hernández |
| author_sort | Lorena Martínez-Zamora |
| collection | DOAJ |
| description | Background: The main objective of this study was to evaluate the effect of periodical UV-B illumination during red cabbage germination on morphological development and the phenolics and carotenoid accumulation. Methods: During a sprouting period of 10 days at 20 °C in darkness, seedlings received 5, 10, or 15 kJ m<sup>−2</sup> UV-B (T5, T10, and T15) applied in four steps (25% on days 3, 5, 7, and 10). UV untreated sprouts were used as control (CTRL). After 10 days of germination, the sprouts were harvested and stored 10 days at 4 °C as a minimally processed product. Phenolic and carotenoid compounds were analysed 1 h after each UV-B application and on days 0, 4, 7, and 10 during cold storage. Results: The longest hypocotyl length was observed in T10-treated sprouts. The total phenolic content (TPC), total flavonoid content (TFC), and total antioxidant capacity (TAC) increased during germination following a sigmoidal kinetic, especially in the UV-B-treated samples, which reported a dose-dependent behaviour. In this way, T10-treated sprouts increased the TPC by 40% after 10 days at 4 °C compared to CTRL, while TAC and TFC increased by 35 and 30%, respectively. Carotenoids were enhanced with higher UV-B doses (T15). Conclusions: We found that UV-B stimulated the biosynthesis of bioactive compounds, and a dose of 10 kJ m<sup>−2</sup> UV-B, proportionally applied on days 3, 5, 7, and 10 days, is recommended. |
| first_indexed | 2024-03-10T03:59:05Z |
| format | Article |
| id | doaj.art-084c653c8f044859818a6f140a27a03c |
| institution | Directory Open Access Journal |
| issn | 2311-7524 |
| language | English |
| last_indexed | 2024-03-10T03:59:05Z |
| publishDate | 2021-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Horticulturae |
| spelling | doaj.art-084c653c8f044859818a6f140a27a03c2023-11-23T08:38:21ZengMDPI AGHorticulturae2311-75242021-12-0171256710.3390/horticulturae7120567UV-B Radiation as Abiotic Elicitor to Enhance Phytochemicals and Development of Red Cabbage SproutsLorena Martínez-Zamora0Noelia Castillejo1Francisco Artés-Hernández2Department of Agronomical Engineering & Institute of Plant Biotechnology, Universidad Politécnica de Cartagena, 30203 Cartagena, Murcia, SpainDepartment of Agronomical Engineering & Institute of Plant Biotechnology, Universidad Politécnica de Cartagena, 30203 Cartagena, Murcia, SpainDepartment of Agronomical Engineering & Institute of Plant Biotechnology, Universidad Politécnica de Cartagena, 30203 Cartagena, Murcia, SpainBackground: The main objective of this study was to evaluate the effect of periodical UV-B illumination during red cabbage germination on morphological development and the phenolics and carotenoid accumulation. Methods: During a sprouting period of 10 days at 20 °C in darkness, seedlings received 5, 10, or 15 kJ m<sup>−2</sup> UV-B (T5, T10, and T15) applied in four steps (25% on days 3, 5, 7, and 10). UV untreated sprouts were used as control (CTRL). After 10 days of germination, the sprouts were harvested and stored 10 days at 4 °C as a minimally processed product. Phenolic and carotenoid compounds were analysed 1 h after each UV-B application and on days 0, 4, 7, and 10 during cold storage. Results: The longest hypocotyl length was observed in T10-treated sprouts. The total phenolic content (TPC), total flavonoid content (TFC), and total antioxidant capacity (TAC) increased during germination following a sigmoidal kinetic, especially in the UV-B-treated samples, which reported a dose-dependent behaviour. In this way, T10-treated sprouts increased the TPC by 40% after 10 days at 4 °C compared to CTRL, while TAC and TFC increased by 35 and 30%, respectively. Carotenoids were enhanced with higher UV-B doses (T15). Conclusions: We found that UV-B stimulated the biosynthesis of bioactive compounds, and a dose of 10 kJ m<sup>−2</sup> UV-B, proportionally applied on days 3, 5, 7, and 10 days, is recommended.https://www.mdpi.com/2311-7524/7/12/567ultravioletnutraceuticalsproduction<i>Brassica oleracea</i> var. <i>capita</i>phenolsantioxidants |
| spellingShingle | Lorena Martínez-Zamora Noelia Castillejo Francisco Artés-Hernández UV-B Radiation as Abiotic Elicitor to Enhance Phytochemicals and Development of Red Cabbage Sprouts Horticulturae ultraviolet nutraceuticals production <i>Brassica oleracea</i> var. <i>capita</i> phenols antioxidants |
| title | UV-B Radiation as Abiotic Elicitor to Enhance Phytochemicals and Development of Red Cabbage Sprouts |
| title_full | UV-B Radiation as Abiotic Elicitor to Enhance Phytochemicals and Development of Red Cabbage Sprouts |
| title_fullStr | UV-B Radiation as Abiotic Elicitor to Enhance Phytochemicals and Development of Red Cabbage Sprouts |
| title_full_unstemmed | UV-B Radiation as Abiotic Elicitor to Enhance Phytochemicals and Development of Red Cabbage Sprouts |
| title_short | UV-B Radiation as Abiotic Elicitor to Enhance Phytochemicals and Development of Red Cabbage Sprouts |
| title_sort | uv b radiation as abiotic elicitor to enhance phytochemicals and development of red cabbage sprouts |
| topic | ultraviolet nutraceuticals production <i>Brassica oleracea</i> var. <i>capita</i> phenols antioxidants |
| url | https://www.mdpi.com/2311-7524/7/12/567 |
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