Use of sulfur dioxide to reduce postharvest decay and preserve the quality of fresh tomatoes
Tomatoes are an important and versatile crop with a short shelf life. Postharvest losses due to fruit decay and handling are reportedly as high as 30–50% globally; therefore, the agricultural sector would benefit from solutions that target the preservation of crops such as tomatoes. In this study,...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Academy of Science of South Africa
2024-01-01
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| Series: | South African Journal of Science |
| Subjects: | |
| Online Access: | https://sajs.co.za/article/view/16626 |
| _version_ | 1797338261002125312 |
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| author | Chanel K. Daniel-Swartland Julia C. Meitz-Hopkins Filicity A. Vries Cheryl L. Lennox |
| author_facet | Chanel K. Daniel-Swartland Julia C. Meitz-Hopkins Filicity A. Vries Cheryl L. Lennox |
| author_sort | Chanel K. Daniel-Swartland |
| collection | DOAJ |
| description |
Tomatoes are an important and versatile crop with a short shelf life. Postharvest losses due to fruit decay and handling are reportedly as high as 30–50% globally; therefore, the agricultural sector would benefit from solutions that target the preservation of crops such as tomatoes. In this study, we investigated the potential use of sulfur dioxide (SO2) to provide postharvest protection against fungal decay in tomatoes whilst maintaining the quality of tomato fruit. Three tomato varieties packed as bulk (3–5 kg) cartons were exposed to SO2-generating sheets applied as either a top sheet over the fruit or a bottom sheet placed on the base of the carton before packing the fruit on the top. The results show that the application of SO2-generating sheets reduced the natural progression of decay on ‘Roma’ tomatoes by up to 60% and up to 80% on ‘Rosa’ tomatoes. Only marginal decay control was observed on ‘Round’ tomatoes. The top sheet application rendered the best results, as the application of the bottom sheet resulted in phytotoxicity in the form of SO2 damage. SO2 application reduced fruit shrivelling, especially when tomatoes were stored at higher temperatures during their shelf life. The application of SO2 on the tomatoes did not have any negative effects on fruit firmness. The results of this study provide a case to further explore the use of SO2-generating sheets on tomatoes to prevent postharvest decay. Differences in varietal physiology may be key to the successful application of this technology.
Significance:
Tomatoes are a crop that is highly susceptible to postharvest decay. These effects lie mainly with the end consumer. Besides the monetary loss of buying a commodity that rots quickly, pathogens infecting tomatoes are known to produce mycotoxins that pose a risk to human health. With food availability and safety concerns, the application of a product that could reduce these concerns would be beneficial to the agricultural sector.
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| first_indexed | 2024-03-08T09:27:29Z |
| format | Article |
| id | doaj.art-fe52ebfb0f9144199563ca7b218c6fd3 |
| institution | Directory Open Access Journal |
| issn | 1996-7489 |
| language | English |
| last_indexed | 2024-03-08T09:27:29Z |
| publishDate | 2024-01-01 |
| publisher | Academy of Science of South Africa |
| record_format | Article |
| series | South African Journal of Science |
| spelling | doaj.art-fe52ebfb0f9144199563ca7b218c6fd32024-01-31T06:44:22ZengAcademy of Science of South AfricaSouth African Journal of Science1996-74892024-01-011201/210.17159/sajs.2024/16626Use of sulfur dioxide to reduce postharvest decay and preserve the quality of fresh tomatoesChanel K. Daniel-Swartland0Julia C. Meitz-Hopkins1Filicity A. Vries2Cheryl L. Lennox31.Fruit and Postharvest Pathology Research Programme, Department of Plant Pathology, Stellenbosch University, Stellenbosch, South Africa; 2.Tessara (Pty) Ltd, Cape Town, South AfricaFruit and Postharvest Pathology Research Programme, Department of Plant Pathology, Stellenbosch University, Stellenbosch, South AfricaTessara (Pty) Ltd, Cape Town, South AfricaFruit and Postharvest Pathology Research Programme, Department of Plant Pathology, Stellenbosch University, Stellenbosch, South Africa Tomatoes are an important and versatile crop with a short shelf life. Postharvest losses due to fruit decay and handling are reportedly as high as 30–50% globally; therefore, the agricultural sector would benefit from solutions that target the preservation of crops such as tomatoes. In this study, we investigated the potential use of sulfur dioxide (SO2) to provide postharvest protection against fungal decay in tomatoes whilst maintaining the quality of tomato fruit. Three tomato varieties packed as bulk (3–5 kg) cartons were exposed to SO2-generating sheets applied as either a top sheet over the fruit or a bottom sheet placed on the base of the carton before packing the fruit on the top. The results show that the application of SO2-generating sheets reduced the natural progression of decay on ‘Roma’ tomatoes by up to 60% and up to 80% on ‘Rosa’ tomatoes. Only marginal decay control was observed on ‘Round’ tomatoes. The top sheet application rendered the best results, as the application of the bottom sheet resulted in phytotoxicity in the form of SO2 damage. SO2 application reduced fruit shrivelling, especially when tomatoes were stored at higher temperatures during their shelf life. The application of SO2 on the tomatoes did not have any negative effects on fruit firmness. The results of this study provide a case to further explore the use of SO2-generating sheets on tomatoes to prevent postharvest decay. Differences in varietal physiology may be key to the successful application of this technology. Significance: Tomatoes are a crop that is highly susceptible to postharvest decay. These effects lie mainly with the end consumer. Besides the monetary loss of buying a commodity that rots quickly, pathogens infecting tomatoes are known to produce mycotoxins that pose a risk to human health. With food availability and safety concerns, the application of a product that could reduce these concerns would be beneficial to the agricultural sector. https://sajs.co.za/article/view/16626sulfur dioxideRoma tomatoesRosa tomatoesRound tomatoespostharvest decay |
| spellingShingle | Chanel K. Daniel-Swartland Julia C. Meitz-Hopkins Filicity A. Vries Cheryl L. Lennox Use of sulfur dioxide to reduce postharvest decay and preserve the quality of fresh tomatoes South African Journal of Science sulfur dioxide Roma tomatoes Rosa tomatoes Round tomatoes postharvest decay |
| title | Use of sulfur dioxide to reduce postharvest decay and preserve the quality of fresh tomatoes |
| title_full | Use of sulfur dioxide to reduce postharvest decay and preserve the quality of fresh tomatoes |
| title_fullStr | Use of sulfur dioxide to reduce postharvest decay and preserve the quality of fresh tomatoes |
| title_full_unstemmed | Use of sulfur dioxide to reduce postharvest decay and preserve the quality of fresh tomatoes |
| title_short | Use of sulfur dioxide to reduce postharvest decay and preserve the quality of fresh tomatoes |
| title_sort | use of sulfur dioxide to reduce postharvest decay and preserve the quality of fresh tomatoes |
| topic | sulfur dioxide Roma tomatoes Rosa tomatoes Round tomatoes postharvest decay |
| url | https://sajs.co.za/article/view/16626 |
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