Effect of Drying On Antioxidant Activity, Phenolic Compounds and Mineral Contents of Hawthorn and Wild Pear Fruits
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ORIGINAL ARTICLE / ORIGINALBEITRAG
Effect of Drying On Antioxidant Activity, Phenolic Compounds and Mineral Contents of Hawthorn and Wild Pear Fruits Mustafa Onur Aladag1 · Süleyman Doğu2 · Nurhan Uslu3 · Mehmet Musa Özcan3 · Sait Gezgin4 · Nesim Dursun4 Received: 22 November 2018 / Accepted: 4 September 2020 © Springer-Verlag GmbH Deutschland, ein Teil von Springer Nature 2020
Abstract The study demonstrated that SD-4 (3193.894 mg GAE/100 g) followed by SD-8 (2262.763 mg GAE/100 g) and SD-7 (1473.956 mg GAE/100 g) had the maximum total phenolic contents. SD-1 possessed the highest antioxidant activity, which later decreased from 83.067% in fresh fruit to 52.130% following drying. Across all fruits, drying resulted in significant reductions in both total phenolic content and phenolic compounds. Generally, gallic acid and (+)-catechin were the major phenolics in all fruits. Rutin trihydrate content of SD-4 decreased from 764.980 mg/100 g (fresh) to 0.620 mg/100 g when the fruit was dried. P, K, Ca, Mg and S were the macro elements of all fruits. Across all fruits, drying resulted in significant reductions in both total phenolic content and phenolic compounds. It was observed that dried fruits had the highest mineral contents compared to fresh fruits.
Keywords Hawthorn · Wild pear · Drying · Antioxidant · Total phenol · Phenolic compounds · Minerals
Einfluss des Trocknens auf die antioxidative Aktivität, die Phenolverbindungen und den Mineralgehalt von Weißdorn- und Wildbirnenfrüchten Schlüsselwörter Weißdorn · Wilde Birne · Trocknen · Antioxidans · Gesamtphenol · Phenolverbindungen · Mineralien
Introduction Crataegus fruit is one of most important fruits in Turkey flora. Some fruits of this genus are edible. Research have shown that hawthorn fruit contains significantly high amounts of bioactive compounds such as epicatechin, hyperoside, and chlorogenic acid (Özcan et al. 2005; Barros et al. 2011; Nabavi et al. 2015), with a wide range
Mehmet Musa Özcan
[email protected] 1
Department of Medicinal Laboratory, Vocational School of Health Services, Selcuk University, Konya, Turkey
2
Department of Science, Ahmet Kele¸so˘glu Faculty of Education, Necmettin Erbakan University, 42090 Konya, Turkey
3
Department of Food Engineering, Faculty of Agriculture, Selcuk University, 42031 Konya, Turkey
4
Department of Soil Science, Faculty of Agriculture, Selcuk University, 42031 Konya, Turkey
of antioxidant and free radical scavenging activities. Hyperoside, isoquercetin and epicatechin are the prominent flavonoid compounds present in hawthorn phenolic extract from hawthorn fruits (Zuo et al. 2006). In addition, the medicinal use of fruits, flowers and leaves of Crataegus spp have been demonstrated and they are particularly useful against cardiovascular disease, especially against candiovascular disease and they have also been used as a cure for stress, nervousness, sleep disorders, stomach ache and sore throat (Chang et al. 2002). Pyrus L. belongs to the subtribe Pyrinae of Rosaceae (Erci¸sli 2004), which is gro
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