Effects of Convective Drying of Quince Fruit ( Cydonia oblonga ) on Color, Antioxidant Activity and Phenolic Compounds under Various Fruit Juice Dipping Pre-Treatments

Hasmet Emre Akman, Ismail Boyar, Sadiye Gozlekci, Onur Saracoglu and Can Ertekin ()
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Hasmet Emre Akman: Department of Agricultural Machinery and Technologies Engineering, Faculty of Agriculture, Akdeniz University, Antalya 07070, Turkey
Ismail Boyar: Department of Agricultural Machinery and Technologies Engineering, Faculty of Agriculture, Akdeniz University, Antalya 07070, Turkey
Sadiye Gozlekci: Department of Holticulture, Faculty of Agriculture, Akdeniz University, Antalya 07070, Turkey
Onur Saracoglu: Department of Horticulture, Faculty of Agriculture, Tokat Gaziosmanpasa University, Tokat 60240, Turkey
Can Ertekin: Department of Agricultural Machinery and Technologies Engineering, Faculty of Agriculture, Akdeniz University, Antalya 07070, Turkey

Agriculture, 2022, vol. 12, issue 8, 1-16

Abstract: In this study, 3 mm thick quince slices were dipped in bitter orange (BO), tangerine ( Citrus deliciosa Mediterranean) (CDM), orange (O), tangerine ( Citrus reticulata Owari) (CRO), pomegranate (P) juices and a non-pre-treatment (control) dried at an air temperature of 70 °C and air velocity of 1.5 m/s. According to the results of the pre-treatment trials, drying time was found to be a minimum of 121 min in pomegranate at 5 min dipping time to reach a safe moisture content of 10% (w.b.). The lowest total color change (∆E) values were observed in orange juice dipped samples (10.19). We found the highest total phenolics (TP) (16.77 mg GAE/g d.w.) in CDM, Trolox equivalent antioxidant capacity (TEAC) (32.49 µmol TE/g d.w.) in P and total flavonoid (TF) (2018.15 mg GAE/kg d.w.) in BO for 5 min dipping time values. As a result, pomegranate juice pre-treatment in all dipping times improved the biocompounds for quince slices.

Keywords: thermal processing; fruit; pre-treatment; biocompounds (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2022
References: View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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