Affiliation:
1. Department of Food Science & Nutrition, College of Food and Agricultural Sciences, King Saud University, Riyadh11451, Saudi Arabia
2. Department of Science, Ahmet Keleşoğlu Faculty of Education, Necmettin Erbakan University, Konya42090, Turkey
3. Department of Food Engineering, Faculty of Agriculture, University of Selçuk, Konya42079, Turkey
Abstract
AbstractThe effect of heating at different temperatures (60, 80, 90, 110, and 130 °C) on the total phenolic content, antioxidant activity, and phenolic compounds present in plum and mahaleb fruits was investigated. The antioxidant activity values and total phenolic contents of fresh plum (93.82% measured by DPPH method, 787.79 mg gallic acid equivalent (GAE)/100 g dry weight determined by Folin method) and mahaleb fruits (81.80%, 634.47 mg GAE/100 g dry weight) were higher than plum and mahaleb fruits dried at different temperatures (p < 0.05). Generally, the heating process caused a reduction in both total phenolic content and antioxidant activity for plum and mahaleb. While (+)-catechin (92.62 mg/kg), 1,2-dihydroxybenzene (132.15 mg/kg), gallic acid (107.01 mg/kg), and 3,4-dihydroxybenzoic acid (74.59 mg/kg) are the key phenolic compounds in fresh plum, (+)-catechin, 3,4-dihydroxybenzoic acid, 1,2-dihydroxybenzene, and syringic and caffeic acids were the major phenolic compounds of mahaleb fruits. The polyphenol content of fruits and the class of phenolics present are significantly affected by heating temperature.
Subject
Engineering (miscellaneous),Food Science,Biotechnology
Cited by
31 articles.
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