Araştırma Makalesi

Bazı Siyah Üzüm ve Nar Ürünlerinin Antioksidan Özelliklerinin İncelenmesi

Sayı: 23 30 Nisan 2021
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Investigating the Antioxidant Properties of Some Black Grape and Pomegranate Products

Abstract

Fruits, which are rich in antioxidant bioactives, are generally processed into a variety of products because of their short shelf-lives as seasonally grown crops. Therefore, fruit bioactives are usually consumed in processed form through these fruit products. In recent years, fruit products those are obtained through traditional processing methods have attracted attention as new natural and functional food alternatives that correspond to the increasing demand of consumers for these products. In this study, it is aimed to determine the antioxidant contents and activities, in “as is” (wet weight) basis, of some world-wide and traditionally consumed products of antioxidant rich black grape and pomegranate fruits which are widely cultivated in Turkey. Within this context, total phenolic, total flavonoid and total monomeric anthocyanin contents as well as total antioxidant capacities of some black grape products, including grape juice, verjuice, hardaliye, grape vinegar, and grape molasses, and some pomegranate products, including pomegranate juice, sour pomegranate syrup, fermented sour pomegranate syrup, pomegranate vinegar, and pomegranate molasses, were determined using spectrophotometric methods and evaluated by comparisons within the same fruit group. Within the black grape products, grape juice, verjuice, and hardaliye; and within the pomegranate products, sour pomegranate syrup, fermented sour pomegranate syrup, and pomegranate molasses were measured to exert comparable and higher antioxidant values. The comparisons among the products, those belong to the same fruit group, revealed that the traditional molasses processing led to significant reductions in the contents of antioxidants, primarily anthocyanins, and hence, in antioxidant capacity, specifically in grape molasses (p<0.05). On the other hand, the fermentation process applied in fermented sour pomegranate syrup processing gave rise to significant increases in total phenolic (173%), total flavonoid (34%), and total anthocyanin (78%) contents, as well as in total antioxidant capacites, determined by DPPH (19%) and ABTS (34%) methods (p<0.05).

Keywords

Kaynakça

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Ayrıntılar

Birincil Dil

Türkçe

Konular

Mühendislik

Bölüm

Araştırma Makalesi

Yayımlanma Tarihi

30 Nisan 2021

Gönderilme Tarihi

17 Ocak 2021

Kabul Tarihi

25 Nisan 2021

Yayımlandığı Sayı

Yıl 1970 Sayı: 23

Kaynak Göster

APA
Toydemir Şen, G. (2021). Bazı Siyah Üzüm ve Nar Ürünlerinin Antioksidan Özelliklerinin İncelenmesi. Avrupa Bilim ve Teknoloji Dergisi, 23, 800-809. https://izlik.org/JA79RL25KA