Kurum Yazarı "Orak, Hakime Hülya" WoS İndeksli Yayınlar Koleksiyonu İçin Listeleme
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Antioxidant Activity of Extracts of Soursop (Annona muricata L.) Leaves, Fruit Pulps, Peels, and Seeds
Orak, Hakime Hülya; Bahrisefit, İlayda Şevik; Şabudak, Temine (Inst Animal Reproduction & Food Research Polish Acad Sciences Olsztyn, 2019)The total phenolic content (TPC), total flavonoid content (TFC), and the antioxidant activity of soursop (Annona muricata L.) leaf, fruit pulp, seed, and peel extracts obtained using successive extraction with hexane (Hxn), ... -
Antioxidant activity of five new phenolic compounds from Cirsium creticum subsp. creticum
Şabudak, Temine; Özer, Merve; Orak, Hakime Hülya; Çalışkan, Hilmican (Elsevier Science Bv, 2019)In this study, five new alkyl catechol derivatives, 1, 2, 3, 4 and 5 were isolated for the first time from Cirsium creticum subsp. creticum L. and their structures were determined by using spectroscopic techniques, including ... -
ANTIOXIDANT ACTIVITY OF PHENOLIC COMPOUNDS OF RED BEAN (Phaseolus vulgaris L.)
Orak, Hakime Hülya; Karamac, Magdalena; Amarowicz, Ryszard (Scibulcom Ltd, 2015)Antioxidant potential of seeds of commonly cultivated two read bean cultivars, namely Onceler and Mecidiye, was evaluated. The crude extracts of phenolic compounds were obtained using by 80% (v/v) methanol and acetone. The ... -
Antioxidant Activity, Some Nutritional and Colour Properties of Vacuum Dried Strawberry Tree (Arbutus Unedo L.) Fruite
Orak, Hakime Hülya; Aktaş, Türkan; Yağar, Hülya; İşbilir, Şebnem Selen; Ekinci, Neslihan; Şahin, Füsun H. (Termedia Publishing House Ltd, 2011)Background. The strawberry tree (Arbutus unedo L.) fruit contains a higher amount of nutrients and bioactive compounds than many other cultivated species, however, the edible use of this fruit is currently not widespread. ... -
Antioxidant and Antimicrobial Activities of White, Green and Black Tea Extracts
Orak, Hakime Hülya; Yağar, Hülya; İşbilir, Şebnem Selen; Demirci, Ahmet Şükrü; Gümüş, Tuncay (Akademiai Kiado Zrt, 2013)In the present study, the antioxidant and antimicrobial activities of three tea (Camellia sinensis) types (white tea WT, green tea - GT, and black tea - BT) were compared and the relationships between total phenolic, tannin ... -
Antioxidant Potential and Phenolic Compounds of Some Widely Consumed Turkish White Bean (Phaseolus vulgaris L.) Varieties
Orak, Hakime Hülya; Karamac, Magdalena; Orak, Adnan; Amarowicz, Ryszard (De Gruyter Open Ltd, 2016)The antioxidant potential and phenolic compounds content were investigated in ten white bean varieties widely consumed in Turkey. Total phenolic contents of seeds varied between 0.33 and 0.63 mg GAE/g. The Trolox Equivalent ... -
BIOACTIVE COMPOUNDS, ANTIBACTERIAL AND ANTIFUNGAL ACTIVITIES OF TWO Cirsium SPECIES
Gülen, Dumrul; Şabudak, Temine; Orak, Hakime Hülya; Çalışkan, Hilmican; Özer, Merve (Wydawnictwo Akad Rolniczej W Lublinie, 2019)In the GC-MS analysis, 81 bioactive phytochemical compounds were identified in hexane extracts of Cirsium creticum and Cirsium italicum. Terpenoids constituted the main fractions of C. italicum (70.95%), while hydrocarbons ... -
Biological activity of new flavonoids and phenolic compounds from Cirsium italicum (Savi) DC.
Şabudak, Temine; Çalışkan, Hilmican; Orak, Hakime Hülya; Özer, Merve (Taylor & Francis Ltd, 2021)Cirsium italicum (Savi) DC. was researched for its phytochemicals for the first time. Two new biflavonoids, 5,5'',7''-trihydroxy-3,7-dimethoxy-4'-4'''-O-biflavone (3), (8,3',4',5'-tetrahydroxy-7-O-alpha-glucosyl ... -
Comparison of antioxidant activities of juice, peel, and seed of pomegranate (Punica granatum L.) and inter-relationships with total phenolic, Tannin, anthocyanin, and flavonoid contents
Orak, Hakime Hülya; Yağar, Hülya; İşbilir, Şebnem Selen (Korean Society Food Science & Technology-Kosfost, 2012)In this study, the antioxidant activities of juice, peel, and seed parts of pomegranate were investigated by using DPPH scavenging activity, beta-carotene bleaching method, reducing power, and metal chelating activity. ... -
DETERMINATION OF ANTIOXIDANT ACTIVITIES OF STRAWBERRY TREE (Arbutus unedo L.) FLOWERS AND FRUITS AT DIFFERENT RIPENING STAGES
İşbilir, Şebnem Selen; Orak, Hakime Hülya; Yağar, Hülya; Ekinci, Neslihan (Wydawnictwo Akad Rolniczej W Lublinie, 2012)In this study, the antioxidant activities of Strawberry tree (Arbutus unedo L.) flowers at flowering period and fruits during ripening period were investigated, along with some ripening characteristics such as color, ... -
Determination of antioxidant properties of lyophilized olive leaf water extracts obtained from 21 different cultivars
Orak, Hakime Hülya; İşbilir, Şebnem Selen; Yağar, Hülya (Korean Society Food Science & Technology-Kosfost, 2012)The objective of this study was to compare the antioxidant activities of lyophilized olive leaf water extracts (OLWExtracts) from 21 different olive tree cultivars. The highest total phenolic content (102.69 +/- 1.63 mu g ... -
Determination of Glucose and Fructose Contents of Some Important Red Grape Varieties by HPLC
Orak, Hakime Hülya (Asian Journal Of Chemistry, 2009)Glucose, fructose and sucrose contents of 24 different red grape varieties (Vitis vinifera), grown in Turkey, were determined by using high-performance liquid chromatography. Among analyzed samples glucose content of ... -
Effects of hot air and freeze drying methods on antioxidant activity, colour and some nutritional characteristics of strawberry tree (Arbutus unedo L) fruit
Orak, Hakime Hülya; Aktaş, Türkan; Yağar, Hülya; İşbilir, Şebnem Selen; Ekinci, Neslihan; Şahin, F. Hastürk (Sage Publications Ltd, 2012)Antioxidant activity, colour and some nutritional properties of hot air and freeze-dried strawberry tree (Arbutus unedo L.) fruits were investigated. Additionally, the effects of two pre-treatments, namely ethyl oleate and ... -
Evaluation of antioxidant activity, colour and some nutritional characteristics of pomegranate (Punica granatum L.) juice and its sour concentrate processed by conventional evaporation
Orak, Hakime Hülya (Taylor & Francis Ltd, 2009)In this study the antioxidant activity, colour and some nutritional characteristics of pomegranate juice (PJ) and its traditional sour concentrate (CPJ), produced in Denizli, Turkey, were analysed. The total anthocyanin ... -
Evaluation of Antioxidant and Antimicrobial Potential of Strawberry Tree (Arbutus Unedo L.) Leaf
Orak, Hakime Hülya; Yağar, Hülya; İşbilir, Şebnem Selen; Demirci, Ahmet Şükrü; Gümüş, Tuncay; Ekinci, Neslihan (Korean Society Food Science & Technology-Kosfost, 2011)In present study, antioxidant and antimicrobial activities of strawberry tree (Arbutus unedo L.) leaves were investigated. Antioxidant activity was determined by methods of DPPH scavenging, beta-carotene bleaching, reducing ... -
Free Radical Scavenging Capacity and Antibacterial Activity of Wild Cirsium creticum from Turkey
Şabudak, Temine; Gülen, Dumrul; Orak, Hakime Hülya; Özer, Merve; Çalışkan, Hilmican; Cabi, Evren (Assoc Pharmaceutical Teachers India, 2017)Background: In recent years, there is increasing interest the using of herbal extracts derived from plants in medicine and as a dietary supplements. Objective: We aimed the determination of the antioxidant and antibacterial ... -
Genotype-Related Differences in the Phenolic Compound Profile and Antioxidant Activity of Extracts from Olive (Olea europaea L.) Leaves
Orak, Hakime Hülya; Karamac, Magdalena; Amarowicz, Ryszard; Orak, Adnan; Penkacik, Kamila (Mdpi, 2019)The phenolic compound contents and antioxidant activities of the leaf extracts of nine olive genotypes were determined, and the obtained data were analysed using chemometric techniques. In the crude extracts, 12 compounds ... -
Grain Qualities, Oil Yields and Fatty Acid Composition of Some Hybrid Dent Corn Varieties
Orak, Hakime Hülya; Korkut, Kayıhan Zahit; Başer, İsmet; Orak, Adnan; Bilgin, Oğuz (Asian Journal Of Chemistry, 2009)In this study, the crude oil, protein, ash, potassium, sodium, ferrous content in corn grain and the characteristics of corn oil such as fatty acid composition, iodine value and specific gravity were determined of 35 hybrid ... -
Influence of Pretreatments and Different Drying Methods on Color Parameters and Lycopene Content of Dried Tomato
Hastürk Şahin, F.; Aktaş, Türkan; Orak, Hakime Hülya; Ülger, Poyraz (Scientific Issues Natl Centre Agrarian Sciences, 2011)HASTURK SAHIN, F., T. AKTAS, H. ORAK and P. ULGER, 2011. Influence of pretreatments and different drying methods on color parameters and lycopene content of dried tomato. Bulg. J. Agric. Sci.,17: 867-881 The effects of ... -
Interrelationships among some Quality Characteristics in Dent Corn (Zea mays L.)
Bilgin, Oğuz; Orak, Hakime Hülya; Korkut, Kayıhan Zahit; Başer, İsmet; Orak, Adnan; Balkan, A. (Springer Heidelberg, 2010)The interrelationships among the grain protein, oil, fatty acids, starch, Na, K, Fe concentrations and chemical grain characteristics were determined by correlation analyses in thirty-five commercial dent corn hybrids. An ...