Effect of Different Predrying Treatments on Physicochemical Quality and Drying Kinetics of Twin Layer Solar Tunnel Dried Tomato (Lycopersicon esculentum L.) Slices
In tomato drying, degradation in final quality may occur based on the drying method used and predrying preparation. Hence, this research was conducted to evaluate the effect of different predrying treatments on physicochemical quality and drying kinetics of twin-layer-solar-tunnel-dried tomato slice...
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| Format: | Article |
| Language: | English |
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Wiley
2022-01-01
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| Series: | Journal of Food Quality |
| Online Access: | http://dx.doi.org/10.1155/2022/9095922 |
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| author | Lelise Tilahun Dufera Werner Hofacker Albert Esper Oliver Hensel |
| author_facet | Lelise Tilahun Dufera Werner Hofacker Albert Esper Oliver Hensel |
| author_sort | Lelise Tilahun Dufera |
| collection | DOAJ |
| description | In tomato drying, degradation in final quality may occur based on the drying method used and predrying preparation. Hence, this research was conducted to evaluate the effect of different predrying treatments on physicochemical quality and drying kinetics of twin-layer-solar-tunnel-dried tomato slices. During the experimental work, tomato slices of var. Galilea were used. As predrying treatments, 0.5% calcium chloride (CaCl2), 0.5% ascorbic acid (C6H8O6), 0.5% citric acid (C6H8O7), and 0.5% sodium chloride (NaCl) were used. The tomato samples were sliced to 5 mm thickness, socked in the pretreatments for ten minutes, and dried in a twin layer solar tunnel dryer under the weather conditions of Jimma, Ethiopia. Untreated samples were used as control. The moisture losses from the samples were monitored by weighing samples at 2 h interval from each treatment. SAS statistical software version 9.2 was used for analyzing data on the physicochemical quality of tomato slices in CRD with three replications. From the experimental result, it was observed that dried tomato slices pretreated with 0.5% ascorbic acid gave the best retention of vitamin C and total phenolic content with a high sugar/acid ratio. Better retention of lycopene and fast drying were observed in dried tomato slices pretreated with 0.5% sodium chloride, and pretreating tomatoes with 0.5% citric acid resulted in better color values than the other treatments. Compared to the control, pretreating significantly preserved the overall quality of dried tomato slices and increased the moisture removal rate in the twin layer solar tunnel dryer. |
| format | Article |
| id | doaj-art-514101956cc84768958cde0b3bfb0ee3 |
| institution | Kabale University |
| issn | 1745-4557 |
| language | English |
| publishDate | 2022-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Food Quality |
| spelling | doaj-art-514101956cc84768958cde0b3bfb0ee32025-02-03T01:00:46ZengWileyJournal of Food Quality1745-45572022-01-01202210.1155/2022/9095922Effect of Different Predrying Treatments on Physicochemical Quality and Drying Kinetics of Twin Layer Solar Tunnel Dried Tomato (Lycopersicon esculentum L.) SlicesLelise Tilahun Dufera0Werner Hofacker1Albert Esper2Oliver Hensel3Department of Post-Harvest ManagementInstitute of Applied Thermo and Fluid DynamicsINNOTECH mbhDepartment of Agricultural EngineeringIn tomato drying, degradation in final quality may occur based on the drying method used and predrying preparation. Hence, this research was conducted to evaluate the effect of different predrying treatments on physicochemical quality and drying kinetics of twin-layer-solar-tunnel-dried tomato slices. During the experimental work, tomato slices of var. Galilea were used. As predrying treatments, 0.5% calcium chloride (CaCl2), 0.5% ascorbic acid (C6H8O6), 0.5% citric acid (C6H8O7), and 0.5% sodium chloride (NaCl) were used. The tomato samples were sliced to 5 mm thickness, socked in the pretreatments for ten minutes, and dried in a twin layer solar tunnel dryer under the weather conditions of Jimma, Ethiopia. Untreated samples were used as control. The moisture losses from the samples were monitored by weighing samples at 2 h interval from each treatment. SAS statistical software version 9.2 was used for analyzing data on the physicochemical quality of tomato slices in CRD with three replications. From the experimental result, it was observed that dried tomato slices pretreated with 0.5% ascorbic acid gave the best retention of vitamin C and total phenolic content with a high sugar/acid ratio. Better retention of lycopene and fast drying were observed in dried tomato slices pretreated with 0.5% sodium chloride, and pretreating tomatoes with 0.5% citric acid resulted in better color values than the other treatments. Compared to the control, pretreating significantly preserved the overall quality of dried tomato slices and increased the moisture removal rate in the twin layer solar tunnel dryer.http://dx.doi.org/10.1155/2022/9095922 |
| spellingShingle | Lelise Tilahun Dufera Werner Hofacker Albert Esper Oliver Hensel Effect of Different Predrying Treatments on Physicochemical Quality and Drying Kinetics of Twin Layer Solar Tunnel Dried Tomato (Lycopersicon esculentum L.) Slices Journal of Food Quality |
| title | Effect of Different Predrying Treatments on Physicochemical Quality and Drying Kinetics of Twin Layer Solar Tunnel Dried Tomato (Lycopersicon esculentum L.) Slices |
| title_full | Effect of Different Predrying Treatments on Physicochemical Quality and Drying Kinetics of Twin Layer Solar Tunnel Dried Tomato (Lycopersicon esculentum L.) Slices |
| title_fullStr | Effect of Different Predrying Treatments on Physicochemical Quality and Drying Kinetics of Twin Layer Solar Tunnel Dried Tomato (Lycopersicon esculentum L.) Slices |
| title_full_unstemmed | Effect of Different Predrying Treatments on Physicochemical Quality and Drying Kinetics of Twin Layer Solar Tunnel Dried Tomato (Lycopersicon esculentum L.) Slices |
| title_short | Effect of Different Predrying Treatments on Physicochemical Quality and Drying Kinetics of Twin Layer Solar Tunnel Dried Tomato (Lycopersicon esculentum L.) Slices |
| title_sort | effect of different predrying treatments on physicochemical quality and drying kinetics of twin layer solar tunnel dried tomato lycopersicon esculentum l slices |
| url | http://dx.doi.org/10.1155/2022/9095922 |
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