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Title: | Physiochemical Characteristics and Antioxidant Activity of a Locally Manufactured Pomegranate Fruit Juice in North Cyprus |
Authors: | Burgaz, Emine Vildan (Co-Supervisor) Gazi, Mustafa (Supervisor) Tavakolinia, Somayeh Eastern Mediterranean University, Faculty of Arts and Sciences, Dept. of Chemistry |
Keywords: | Chemistry Antioxidants-Pomegranate antioxidant activity pomegranate phytochemical screening colour anthocyanins |
Issue Date: | Sep-2017 |
Publisher: | Eastern Mediterranean University (EMU) - Doğu Akdeniz Üniversitesi (DAÜ) |
Citation: | Tavakolinia, Somayeh. (2017). Physiochemical Characteristics and Antioxidant Activity of a Locally Manufactured Pomegranate Fruit Juice in North Cyprus. Thesis (M.S.), Eastern Mediterranean University, Institute of Graduate Studies and Research, Dept. of Chemistry, Famagusta: North Cyprus. |
Abstract: | Phytochemical and antioxidant properties of pomegranate juice PJ produced from the Wonderful pomegranate cultivar (Punica granatum L.) grown locally in North Cyprus was undertaken. The objective of this research study was to determine the biologically active components present, antioxidant activity, total anthocyanin content etc. of PJ and compare it with the unprocessed Pomegranate fruit juice PF. Antioxidant activity of both samples was determined using the DPPH (2,2-diphenyl-1-picrylhydrazyl) assay while pH differential method was used to determine the anthocyanin content.
Results obtained from the qualitative phytochemical screening of locally manufactured PJ confirmed the presence of several phytochemicals such as; tannin, phenol, saponin, flavonoids, in our sample. The pH of the juice increased only slightly when compared to the unprocessed juice with both samples having similar results for titratable acid. Antioxidant activity of PJ was high (94.60%) though slightly lower than that of the PF (95.20%) which shows that PJ possess good antioxidant activity. Total anthocyanin content (10.12 mg cyanidin-3-glucoside / 100 g), flavonoid (58.52 mg quercetin/ 100 g) and calcium (27.81 mg/kg) content was found to be higher in the PJ than the fruit (2.46 mg cyanidin-3-glucoside/ 100 g; 53.44 mg quercetin/ 100 g and 12.46 mg/kg) while the Vitamin C (67.30 mg/kg), total sugar (148.46 g/kg) and potassium (250.04 mg/100g) content was higher in the fruit than the juice (18.70 mg/kg; 139.24 g/kg and 236.14 mg/100g).
Keywords: antioxidant activity, pomegranate, phytochemical screening, colour, anthocyanins ÖZ:
Kuzey Kıbrıs'ta yerel olarak yetiştirilen Wonderful nar çeşidinden (Punica granatum L.) üretilen PJ nar meyvesinin fitokimyasal ve antioksidan özellikleri incelenmiştir. Bu araştırmanın amacı, PJ'nin varolan biyolojik olarak aktif bileşenlerini, antioksidan aktivitesini, toplam antosiyanin içeriğini vb. belirlemek ve PF işlenmemiş Nar meyve suyuyla karşılaştırmaktır. Her iki numunenin antioksidan aktivitesi DPPH (2,2-difenil-1-pikrilhidrazil) tahlili ile belirlenirken, antosiyanin içeriğini belirlemek için pH diferansiyel yöntemi kullanılmıştır. Yerel olarak üretilen PJ'nin nitel fitokimyasal taramasından elde edilen sonuçlar, birkaç fitokimyasal maddenin varlığını doğrulamıştır; Bu maddeler arasında tanen, fenol, saponin, flavonoidler bazılarıdır. Meyve suyunun pH değeri, her iki numune için de benzer sonuçlar göstermiştir. PJ'nin antioksidan aktivitesi, PF'den (% 95.20) biraz daha düşük olmasına rağmen yüksek (% 94.60) bulunmuştur. Bu da PJ'nin iyi antioksidan aktiviteye sahip olduğunu göstermektedir. PJ'de toplam antosiyanin içeriği (10.12 mg siyanidin-3-glukosid / 100 g), flavonoid (58.52 mg kerercin / 100 gr) ve kalsiyumun (27.81 mg / kg) içeriği meyve oranından (2.46 mg siyanidin- C vitamini (67.30 mg / kg), toplam şeker (148.46 g / kg) ve potasyum (250.04 mg / 100 gr) içeriği, C vitamini içeriğinde daha yüksektir. (Meyve suyu (18.70 mg / kg; 139.24 g / kg ve 236.14 mg / 100 g)).
Anahtar Kelimeler: antioksidant aktivite, nar, fitokimyasal tarama, renk,
antosiyaninler |
Description: | Master of Science in Chemistry. Thesis (M.S.)--Eastern Mediterranean University, Faculty of Arts and Sciences, Dept. of Chemistry, 2017. Co-Supervisor: Assist. Prof. Dr. Emine Vildan Burgaz, Supervisor: Assoc. Prof. Dr. Mustafa Gazi. |
URI: | http://hdl.handle.net/11129/4237 |
Appears in Collections: | Theses (Master's and Ph.D) – Chemistry
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