The Potential of Exploiting Economical Solar Dryer in Food Preservation: Storability, Physicochemical Properties, and Antioxidant Capacity of Solar-Dried Tomato (<i>Solanum lycopersicum</i>) Fruits
This study investigated the effect of solar drying on storability and physiochemical and antioxidant capacities of dried tomatoes. Sliced fruit was dried at 45 ± 2 °C for 24 h under a solar tunnel dryer and stored at ambient temperature for 90 and 180 days. Solar drying treatments significantly (<...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-03-01
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| Series: | Foods |
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| Online Access: | https://www.mdpi.com/2304-8158/10/4/734 |
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| author | Salah A. Al Maiman Nawal A. Albadr Ibrahim A. Almusallam Mohammed Jawad Al-Saád Sarah Alsuliam Magdi A. Osman Amro B. Hassan |
| author_facet | Salah A. Al Maiman Nawal A. Albadr Ibrahim A. Almusallam Mohammed Jawad Al-Saád Sarah Alsuliam Magdi A. Osman Amro B. Hassan |
| author_sort | Salah A. Al Maiman |
| collection | DOAJ |
| description | This study investigated the effect of solar drying on storability and physiochemical and antioxidant capacities of dried tomatoes. Sliced fruit was dried at 45 ± 2 °C for 24 h under a solar tunnel dryer and stored at ambient temperature for 90 and 180 days. Solar drying treatments significantly (<i>p</i> < 0.05) reduced the bacterial and mold load, and eliminated <i>Staphylococcus aureus</i>, <i>S. saprophyticus</i>, and <i>Escherichia coli</i> in all samples. Solar drying treatment reduced the water activity of the dried tomato’s to 0.31 that remained at the same level during storage period 180 days. Storage of dried tomato slices resulted in the decrease of both color and vitamin C content while it increased the total carotenoid, lycopene, phenolic compound content, and antioxidant activity. Furthermore, the principle component analysis (PCA) revealed that solar drying of tomato slices enhanced its physicochemical properties, antioxidant capacity particularly after storage for 90 and 180 days. Interestingly, the solar drying process enhanced tomato slices storage and physicochemical characteristics, that resulted in extending the shelf life by up to 6 months, indicating the great potential application of low-tech solar in food industry and could become an emerging effective post-harvest preservative method for seasonal perishable vegetable and fruit, particularly in developing countries. |
| first_indexed | 2024-03-10T12:46:41Z |
| format | Article |
| id | doaj.art-97110378bde64b8db77502a0bed808f3 |
| institution | Directory Open Access Journal |
| issn | 2304-8158 |
| language | English |
| last_indexed | 2024-03-10T12:46:41Z |
| publishDate | 2021-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Foods |
| spelling | doaj.art-97110378bde64b8db77502a0bed808f32023-11-21T13:26:29ZengMDPI AGFoods2304-81582021-03-0110473410.3390/foods10040734The Potential of Exploiting Economical Solar Dryer in Food Preservation: Storability, Physicochemical Properties, and Antioxidant Capacity of Solar-Dried Tomato (<i>Solanum lycopersicum</i>) FruitsSalah A. Al Maiman0Nawal A. Albadr1Ibrahim A. Almusallam2Mohammed Jawad Al-Saád3Sarah Alsuliam4Magdi A. Osman5Amro B. Hassan6Department of Food Science and Nutrition, College of Food and Agricultural Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi ArabiaDepartment of Food Science and Nutrition, College of Food and Agricultural Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi ArabiaDate and Palm Center, Ministry of Environment, Water and Agriculture, P.O. Box 43, Alhufuf 31982, Saudi ArabiaSaudi Irrigation Organization, P.O. Box 43, Alhufuf 31982, Saudi ArabiaDepartment of Food Science and Nutrition, College of Food and Agricultural Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi ArabiaDepartment of Food Science and Nutrition, College of Food and Agricultural Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi ArabiaDepartment of Food Science and Nutrition, College of Food and Agricultural Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi ArabiaThis study investigated the effect of solar drying on storability and physiochemical and antioxidant capacities of dried tomatoes. Sliced fruit was dried at 45 ± 2 °C for 24 h under a solar tunnel dryer and stored at ambient temperature for 90 and 180 days. Solar drying treatments significantly (<i>p</i> < 0.05) reduced the bacterial and mold load, and eliminated <i>Staphylococcus aureus</i>, <i>S. saprophyticus</i>, and <i>Escherichia coli</i> in all samples. Solar drying treatment reduced the water activity of the dried tomato’s to 0.31 that remained at the same level during storage period 180 days. Storage of dried tomato slices resulted in the decrease of both color and vitamin C content while it increased the total carotenoid, lycopene, phenolic compound content, and antioxidant activity. Furthermore, the principle component analysis (PCA) revealed that solar drying of tomato slices enhanced its physicochemical properties, antioxidant capacity particularly after storage for 90 and 180 days. Interestingly, the solar drying process enhanced tomato slices storage and physicochemical characteristics, that resulted in extending the shelf life by up to 6 months, indicating the great potential application of low-tech solar in food industry and could become an emerging effective post-harvest preservative method for seasonal perishable vegetable and fruit, particularly in developing countries.https://www.mdpi.com/2304-8158/10/4/734solar dryingshelf lifebioactive compoundstomato slices |
| spellingShingle | Salah A. Al Maiman Nawal A. Albadr Ibrahim A. Almusallam Mohammed Jawad Al-Saád Sarah Alsuliam Magdi A. Osman Amro B. Hassan The Potential of Exploiting Economical Solar Dryer in Food Preservation: Storability, Physicochemical Properties, and Antioxidant Capacity of Solar-Dried Tomato (<i>Solanum lycopersicum</i>) Fruits Foods solar drying shelf life bioactive compounds tomato slices |
| title | The Potential of Exploiting Economical Solar Dryer in Food Preservation: Storability, Physicochemical Properties, and Antioxidant Capacity of Solar-Dried Tomato (<i>Solanum lycopersicum</i>) Fruits |
| title_full | The Potential of Exploiting Economical Solar Dryer in Food Preservation: Storability, Physicochemical Properties, and Antioxidant Capacity of Solar-Dried Tomato (<i>Solanum lycopersicum</i>) Fruits |
| title_fullStr | The Potential of Exploiting Economical Solar Dryer in Food Preservation: Storability, Physicochemical Properties, and Antioxidant Capacity of Solar-Dried Tomato (<i>Solanum lycopersicum</i>) Fruits |
| title_full_unstemmed | The Potential of Exploiting Economical Solar Dryer in Food Preservation: Storability, Physicochemical Properties, and Antioxidant Capacity of Solar-Dried Tomato (<i>Solanum lycopersicum</i>) Fruits |
| title_short | The Potential of Exploiting Economical Solar Dryer in Food Preservation: Storability, Physicochemical Properties, and Antioxidant Capacity of Solar-Dried Tomato (<i>Solanum lycopersicum</i>) Fruits |
| title_sort | potential of exploiting economical solar dryer in food preservation storability physicochemical properties and antioxidant capacity of solar dried tomato i solanum lycopersicum i fruits |
| topic | solar drying shelf life bioactive compounds tomato slices |
| url | https://www.mdpi.com/2304-8158/10/4/734 |
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