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Javidipour I.,Yuzuncu Yil University | Tufenk R.,Yuzuncu Yil University | Basturk A.,Igdr University
Journal of Food Science and Technology | Year: 2013

The effects of 400 ppm ascorbyl palmitate (AP) on fatty acids composition, tocopherol, peroxide value (PV) and malonaldehyde (MAD) contents of refined cottonseed oil (CO) and virgin olive oil (OO) during chemical interesterification (CI), and storage at 60 °C for 28 days were investigated. CI significantly decreased (p < 0.05) the tocopherol contents of CO and OO. PVs and MAD contents of oil samples considerably increased up to 20 min of CI, followed by a reduction at 30 min. The unsaturated fatty acids/saturated fatty acids (UFA/SFA) ratios of the samples showed slight but significant (p < 0.05) reduction during accelerated oxidation process. Oils with added 400 ppm AP had higher tocopherol, and lower PVs and MAD contents than their counterparts without AP during CI, and storage at 60 °C. AP increased the oxidative stability of interesterified and non-interesterified CO and OO. © 2013, Association of Food Scientists & Technologists (India). Source

Eyduran S.P.,Igdir University | Akin M.,Oregon State University | Ercisli S.,Ataturk University | Eyduran E.,Igdr University
Biological Research | Year: 2015

Background: The Eurasian grapevine (Vitis vinifera L.) is the most widely cultivated and economically important horticultural crop in the world. As a one of the origin area, Anatolia played an important role in the diversification and spread of the cultivated form V. vinifera ssp. vinifera cultivars and also the wild form V. vinifera ssp. sylvestris ecotypes. Although several biodiversity studies have been conducted with local cultivars in different regions of Anatolia, no information has been reported so far on the biochemical (organic acids, sugars, phenolic acids, vitamin C) and antioxidant diversity of local historical table V. vinifera cultivars grown in Igdir province. In this work, we studied these traits in nine local table grape cultivars viz. ‘Beyaz Kismis’ (synonym name of Sultanina or Thompson seedless), ‘Askeri’, ‘El Hakki’, ‘Kirmizi Kismis’, ‘Inek Emcegi’, ‘Hacabas’, ‘Kerim Gandi’, ‘Yazen Dayi’, and ‘Miskali’ spread in the Igdir province of Eastern part of Turkey. Results: Variability of all studied parameters is strongly influenced by cultivars (P < 0.01). Among the cultivars investigated, ‘Miskali’ showed the highest citric acid content (0.959 g/l) while ‘Kirmizi Kismis’ produced predominant contents in tartaric acid (12.71 g/l). The highest glucose (16.47 g/100 g) and fructose (15.55 g/100 g) contents were provided with ‘Beyaz Kismis’. ‘Kirmizi Kismis’ cultivar had also the highest quercetin (0.55 mg/l), o-coumaric acid (1.90 mg/l), and caffeic acid (2.73 mg/l) content. The highest ferulic acid (0.94 mg/l), and syringic acid (2.00 mg/l) contents were observed with ‘Beyaz Kismis’ cultivar. The highest antioxidant capacity was obtained as 9.09 μmol TE g−1 from ‘Inek Emcegi’ in TEAC (Trolox equivalent Antioxidant Capacity) assay. ‘Hacabas’ cultivar had the highest vitamin C content of 35.74 mg/100 g. Conclusions: Present results illustrated that the historical table grape cultivars grown in Igdir province of Eastern part of Turkey contained diverse and valuable sugars, organic acids, phenolic acids, Vitamin C values and demonstrated important antioxidant capacity for human health benefits. Further preservation and use of this gene pool will be helpful to avoid genetic erosion and to promote continued agriculture in the region. © 2015 Eyduran et al.; licensee BioMed Central. Source

Kibar A.K.,Black Sea Agricultural Research Institute | Eken C.,Suleyman Demirel University of Turkey | Guclu S.,Bozok University | Genc T.,Igdr University | Sekban R.,Ataturk Tea and Horticulture Research Institute
Egyptian Journal of Biological Pest Control | Year: 2014

Conidiobolus coronatus is a major opportunistic insect pathogen belongs to order Entomophthorales which is distributed worldwide. Effect of C. coronatus against nymphs of Ricania simulans (Walker) (Recaniidae: Hemiptera) was studied under laboratory and field conditions. In laboratory, three isolates (Cc1, Cc2 and Cc3) of C. coronatus were assessed against nymphs of R. simulans, at a single dose (1x107 conidia mL-1) on tea leaflets. Mortality percentage after a six-day period reached 100% and the median lethal time (LT50) values ranged from 3.19 to 3.66 days. In a field, C. coronatus strain Cc3 was assessed against nymphs of this pest, at a single dose (1x107 conidia mL-1) on apple plants. The LT50 values for nymphs were 4.33 days. Obtained findings suggest that C. coronatus strain Cc3 is a potent entomopathogenic agent that could be included against R. simulans in IPM programs. ©, 2014 Egyptian Society for Biological Control of Pests, All right reserved. Source

The present study was undertaken to assess the influences of lactation stage, lactation order, and udder types on udder traits and chemical composition of milk in Tuj sheep. Udder circumference (UC), udder depth (UD), udder bottom height (UBH), udder upper height (UUH) and udder width (UW) were significantly affected by lactation stage (P<0.01, P<0.001). The effects of lactation order on udder measurements and chemical composition of milk and a udder type on chemical composition of milk were found to be not significant (P>0.05). UW was significantly affected by udder type (P<0.05). Fat, solid non fat (SNF), density, lactose and mineral was significantly affected by lactation stage (P<0.05, P<0.001). Significant positive correlations (P<0.05, P<0.01, P<0.001) were established between UC with each of UD (0.41 and 0.52), UW (0.62 and 0.68) and teat diameter (TD) (0.35 and 0.40) and between UD with each of TD (0.42 and 0.41) and UW (0.53 and 0.54) and also between teat length (TL) and TD (0.37 and 0.37); TD and UW (0.42 and 0.42); UBH and UUH (0.49 and 0.49); UUH and UW (0.37 and 0.36) at the 70 and 100 days of the lactation. The strongest positive correlations were found between SNF with each of density (0.92 and 0.96), lactose (0.95 and 0.96), and mineral (0.98 and 0.99) at the 70 and 100 days of the lactation. The results of the study indicate that the influence of lactation stage on some udder traits and chemical composition of milk are very important and ought to be taken in to account in sheep breeding. © 2015,Chartered Inst. of Building Services Engineers. All rights reserved. Source

Gozuacik C.,Igdr University | Yigit A.,Mustafa Kemal University | Simsek Z.,Cankr Karatekin University
Turkish Journal of Agriculture and Forestry | Year: 2016

This investigation was carried out for possible use of sum of degree-days (total effective temperatures) in order to predict the critical biological stages in chemical control of Sunn pest, Eurygaster integriceps Put. (Hemiptera: Scutelleridae), in 28 wheat fields of Adıyaman, Diyarbakır, and Şanlıurfa provinces from 2007 to 2010, and in climate chamber conditions. Development threshold temperature (°C) of Sunn pest in terms of the life span, starting from egg to new generation of adults, was found as 13.30 °C. Sums of degree-days starting from 1 January to appearance of the eggs, first-stage nymphs (n1), second-stage nymphs (n2), and fourth-stage nymphs (n4) were found with the averages of 44.6, 84.4, 123.3, and 223.1 degree-days, respectively. The results from the field studies reflected that developmental biological data on sum of degree-days as a predictive tool could be useful in better decision making to start chemical applications as soon as the appearance of n1 until n4 for Sunn pest control. © TÜBİTAK. Source

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