Zeolites and Biochar Modulate Olive Fruit and Oil Polyphenolic Profile
Soil degradation processes and climate change threaten the sustainability of Mediterranean rainfed olive orchards, with repercussions on crop yield and quality of olives, olive oil and olive by-products. Using soil amendments can enhance soil fertility for sustained environmental quality and plant p...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-07-01
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| Series: | Antioxidants |
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| Online Access: | https://www.mdpi.com/2076-3921/11/7/1332 |
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| author | Sandra Martins Ermelinda Silva Cátia Brito Carlos Martins-Gomes Alexandre Gonçalves Margarida Arrobas Manuel Ângelo Rodrigues Carlos M. Correia Fernando M. Nunes |
| author_facet | Sandra Martins Ermelinda Silva Cátia Brito Carlos Martins-Gomes Alexandre Gonçalves Margarida Arrobas Manuel Ângelo Rodrigues Carlos M. Correia Fernando M. Nunes |
| author_sort | Sandra Martins |
| collection | DOAJ |
| description | Soil degradation processes and climate change threaten the sustainability of Mediterranean rainfed olive orchards, with repercussions on crop yield and quality of olives, olive oil and olive by-products. Using soil amendments can enhance soil fertility for sustained environmental quality and plant performance. For two years, we evaluated, under rainfed conditions, the effects of a fertilizer compound (FC) and its combination with zeolites (ZL) and biochar (BC) amendments on soil moisture, yield, fruit and oil polyphenols and quality indices. The polyphenolic composition was strongly influenced by treatments, although no effects were observed on crop yield. ZL improved soil moisture (average increase of 26.3% compared to FC), fruit fatty acid composition (increase of 12.4% in oleic/linoleic ratio in 2018) and oil quality, BC enhanced the concentrations of polyphenols with high nutritional value (average annual increase of 25.6, 84.8 and 11.6% for 3,4-dihydroxyphenylglycol, oleuropein and rutin, respectively). In contrast, olive oil from FC fruits showed the poorest quality, with oxidation and hydrolytic breakdown signals. The applied soil amendments appear to be a promising sustainable strategy to implement in olive rainfed orchards. |
| first_indexed | 2024-03-09T12:20:24Z |
| format | Article |
| id | doaj.art-f9431e97a6f84067b2f5894c50b6b924 |
| institution | Directory Open Access Journal |
| issn | 2076-3921 |
| language | English |
| last_indexed | 2024-03-09T12:20:24Z |
| publishDate | 2022-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Antioxidants |
| spelling | doaj.art-f9431e97a6f84067b2f5894c50b6b9242023-11-30T22:42:29ZengMDPI AGAntioxidants2076-39212022-07-01117133210.3390/antiox11071332Zeolites and Biochar Modulate Olive Fruit and Oil Polyphenolic ProfileSandra Martins0Ermelinda Silva1Cátia Brito2Carlos Martins-Gomes3Alexandre Gonçalves4Margarida Arrobas5Manuel Ângelo Rodrigues6Carlos M. Correia7Fernando M. Nunes8CITAB—Centre for the Research and Technology of Agro-Environmental and Biological Sciences, University of Trás-os-Montes e Alto Douro, 5000-801 Vila Real, PortugalCITAB—Centre for the Research and Technology of Agro-Environmental and Biological Sciences, University of Trás-os-Montes e Alto Douro, 5000-801 Vila Real, PortugalCITAB—Centre for the Research and Technology of Agro-Environmental and Biological Sciences, University of Trás-os-Montes e Alto Douro, 5000-801 Vila Real, PortugalCITAB—Centre for the Research and Technology of Agro-Environmental and Biological Sciences, University of Trás-os-Montes e Alto Douro, 5000-801 Vila Real, PortugalMORE—Collaborative Laboratory Mountains of Research, Brigantia Ecopark, 5300-358 Bragança, PortugalCIMO—Centro de Investigação de Montanha, Instituto Politécnico de Bragança, 5300-253 Bragança, PortugalCIMO—Centro de Investigação de Montanha, Instituto Politécnico de Bragança, 5300-253 Bragança, PortugalCITAB—Centre for the Research and Technology of Agro-Environmental and Biological Sciences, University of Trás-os-Montes e Alto Douro, 5000-801 Vila Real, PortugalCQ-VR—Food and Wine Chemistry Laboratory, Chemistry Research Centre—Vila Real, University of Trás-os-Montes e Alto Douro, 5000-801 Vila Real, PortugalSoil degradation processes and climate change threaten the sustainability of Mediterranean rainfed olive orchards, with repercussions on crop yield and quality of olives, olive oil and olive by-products. Using soil amendments can enhance soil fertility for sustained environmental quality and plant performance. For two years, we evaluated, under rainfed conditions, the effects of a fertilizer compound (FC) and its combination with zeolites (ZL) and biochar (BC) amendments on soil moisture, yield, fruit and oil polyphenols and quality indices. The polyphenolic composition was strongly influenced by treatments, although no effects were observed on crop yield. ZL improved soil moisture (average increase of 26.3% compared to FC), fruit fatty acid composition (increase of 12.4% in oleic/linoleic ratio in 2018) and oil quality, BC enhanced the concentrations of polyphenols with high nutritional value (average annual increase of 25.6, 84.8 and 11.6% for 3,4-dihydroxyphenylglycol, oleuropein and rutin, respectively). In contrast, olive oil from FC fruits showed the poorest quality, with oxidation and hydrolytic breakdown signals. The applied soil amendments appear to be a promising sustainable strategy to implement in olive rainfed orchards.https://www.mdpi.com/2076-3921/11/7/1332<i>Olea europaea</i> L.olive oil qualityrainfed orchardssoil amendmentssoil fertility |
| spellingShingle | Sandra Martins Ermelinda Silva Cátia Brito Carlos Martins-Gomes Alexandre Gonçalves Margarida Arrobas Manuel Ângelo Rodrigues Carlos M. Correia Fernando M. Nunes Zeolites and Biochar Modulate Olive Fruit and Oil Polyphenolic Profile Antioxidants <i>Olea europaea</i> L. olive oil quality rainfed orchards soil amendments soil fertility |
| title | Zeolites and Biochar Modulate Olive Fruit and Oil Polyphenolic Profile |
| title_full | Zeolites and Biochar Modulate Olive Fruit and Oil Polyphenolic Profile |
| title_fullStr | Zeolites and Biochar Modulate Olive Fruit and Oil Polyphenolic Profile |
| title_full_unstemmed | Zeolites and Biochar Modulate Olive Fruit and Oil Polyphenolic Profile |
| title_short | Zeolites and Biochar Modulate Olive Fruit and Oil Polyphenolic Profile |
| title_sort | zeolites and biochar modulate olive fruit and oil polyphenolic profile |
| topic | <i>Olea europaea</i> L. olive oil quality rainfed orchards soil amendments soil fertility |
| url | https://www.mdpi.com/2076-3921/11/7/1332 |
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