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Title: | Kinetics of Antioxidant Activity and Color Degradation in Tomatoes during Hot Air Drying | Other Titles: | Sıcak Hava ile Kurutma Sırasında Domateslerde Antioksidan Aktivite ve Renk Bozulmasının Kinetiği | Authors: | Gokmen, Adeviye Rana Demiray, Engin Tülek, Yahya Yilmaz, Y. |
Keywords: | Antioxidant activity Hot air drying Lycopene Tomato β-Carotene |
Publisher: | Sidas Medya A.S. | Abstract: | The antioxidant activity (AA) and color degradation were monitored in tomato quarters (Rio Grande) during hot air drying in a cabinet drier at five temperatures (60, 70, 80, 90 and 100°C) at an airflow rate of 0.2 m/s and 20% relative humidity. AA values of fresh tomatoes determined by total phenolic content (TPC), FRAP and DPPH assays were 85.3 mg GAE, 26.2 µmol TE and 31.3 µmol TE/100g dm, respectively. Increasing drying temperature resulted in a reduction in Hunter Lab and a/b color values of tomatoes as well as their AA values. During hot air drying, the degradation of AA and color values of tomatoes followed a first-order reaction. Activation energy values for AA degradation determined by TPC, FRAP and DPPH assays were 24.36, 22.91 and 23.67 kJ/mol, respectively. High correlations were found among the TPC, DPPH and FRAP values and lycopene and β-carotene contents of tomatoes during hot air drying. Degradation kinetic data revealed that color values and tomatoes AA are susceptible to drying temperature. © 2023 The Author(s). | URI: | https://doi.org/10.24323/akademik-gida.1350948 https://hdl.handle.net/11499/52819 |
ISSN: | 1304-7582 |
Appears in Collections: | Mühendislik Fakültesi Koleksiyonu Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection |
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Kinetics-of-Antioxidant-Activity-and-Color-Degradation-in-Tomatoes-during-Hot-Air-DryingAkademik-Gida.pdf | 479.56 kB | Adobe PDF | View/Open |
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