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Öğe THE DETERMINATION OF OLEIC ACID CONTENTS IN SUNFLOWER GENOTYPES(Aleksandras Stulginskis University, 2017) Kaya, Yalcin; Colak, Caglar; Pekcan, Veli; Yilmaz, Mehmet Ibrahim; Evci, GokselHigh oleic sunflower is new trend both in Turkey and also in the world due to that it present healthy vegetable oil and also higher standing ability for frying. Higher oleic acid also affects from environment especially nigh temperatures during the grain filling period but genetic contribution is also important. High oleic acid content comes from Pervenent mutation in sunflower and it controlling Ol genes. However, because of being a seed trait which is determining after harvest, it is so difficult and unnecessary works (waiting even low oleic ones until seed treshing, etc) to select high oleic sunflower genetic materials. Therefore, selection utilization of molecular markers for determining of higher oleic types help breeders a lot to select accurately high oleic ones and also reduce costs both workers, isolation material, etc. The study covers determining of higher oleic type sunflower genetic materials developed in National Sunflower Hybrid Breeding Project conducted by Trakya Agricultural Research Institute. To screen of high oleic acid genotypes, around 400 sunflower F2 and F3 individuals obtained from crosses between high oleic acid and low oleic acid lines were used in TUBITAK (The Scientific and Technological Research Council of Turkey) Project 1003-114O971. Fatty acids of sunflower genotypes were determined by Agilent 6850 Gas Chromatography in Trakya University Lab. Based on the study results, oleic acid contents of sunflower genotypes were changed between 21.9-91.8 %, linoleic acid contents of them between 1.1-66.5 %, palmitic acid contents of them were between 3.4-8.0 % and stearic acid contents of genotypes were changed between 1.1-9.7 %. The higher oleic types were selected based on the study results for further generations.Öğe Effect of deep frying process on the quality of the refined oleic/linoleic sunflower seed oil and olive oil(Springer India, 2020) Askin, Buket; Kaya, YalcinThe main goal of this study was to compare the changes that happen during the frying process with the refined oleic sunflower oil (ROSO), refined olive oil (ROO) and refined linoleic sunflower oil (RLSO) in 5-day testing period as well to evaluate the efficacy of fatty acid composition on frying stability. Each day, oil samples were withdrawn after 7 h of frying and were further subjected to analyzes for determination of different chemical properties. As a result, in the current studies were observed significant changes in all oil types in terms of chemical properties. ROSO, which contained lower linoleic acid content, had higher thermal stability than both RLSO and ROO. This result indicated that the frying efficiency of ROSO depended mainly on the linoleic acid content and the iodine value.Öğe EVALUATION OF MALE INBRED LINES OF SUNFLOWER (Helianthus annuus L.) FOR RESISTANCE TO DROUGHT VIA CHLOROPHYLL FLUORESCENCE(Soc Field Crop Sci, 2016) Kaya, Yalcin; Balkan Nalcaiyi, A. Suna; Culha Erdal, Sekure; Arslan, Ozlem; Cicek, Nuran; Pekcan, Veli; Yilmaz, M. IbrahimSunflower (Helianthus annuus L.) suffers from terminal drought accompanying with high temperature stress since it grows mainly in rain fed areas. Therefore, plant breeders try to improve more drought tolerant varieties and to screen their genetic materials for drought resistance. The present study was conducted to determine drought tolerance levels of sunflower male inbred lines developed by Trakya Agricultural Research Institute (TART), Edirne, Turkey. Inbred lines grown under controlled environmental conditions were sorted by polyphasic chlorophyll a fluorescence measurements. Drought stress applications were performed at three sunflower growth stages as R-3 (vegetative), R5-1 (head formation) and R-6 (milky seed). Based on applied different JIP-Test (analysis of O-J-I-P fluorescence transient) parameters such as Drought Factor index (-DFI) and Damage index (-DI), 70352 R, 8129 R, 0536 R and 9947 R restorer lines were found more drought tolerant than those of the other examined sunflower inbred lines, whereas TT 317 R and TT 199 R were determined as more drought sensitive than others. The drought tolerant inbred lines will be helpful to improve drought resistance in sunflower breeding programs.Öğe Progress in modification of sunflower oil to expand its industrial value(Wiley, 2017) Rauf, Saeed; Jamil, Nazia; Tariq, Sultan Ali; Khan, Maria; Kausar, Maria; Kaya, YalcinIncreasing the sunflower seed oil content as well as improving its quality makes it compatible for industrial demands. This is an important breeding objective of sunflower which increases its market value and ensures high returns for the producers. The present review focuses on determining the progress of improving sunflower seed oil content and modifying its quality by empirical and advanced molecular breeding methods. It is known that the sunflower oil content and quality have been altered through empirical selection methods and mutation breeding programmes in various parts of the world. Further improvement in seed oil content and its components (such as phytosterols, tocopherols and modified fatty acid profile) has been slowed down due to low genetic variation in elite germplasm and complex of hereditary traits. Introgression from wild species can be carried out to modify the fatty acids profile and tocopherol contents with linkage drags. Different transgenes introduced through biotechnological methods may produce novel long-chain fatty acids within sunflower oil. Bio-engineering of sunflower oil could allow it to be used in diverse industrial products such as bio-diesel or bio-plastics. These results showed that past and current trends of modifying sunflower oil quality are essential for its further expansion as an oilseed crop. (c) 2017 Society of Chemical IndustryÖğe Properties of yogurt fortified with capsaicin extracts dissolved in high oleic sunflower oil(Wiley-Hindawi, 2022) Askin, Buket; Ozturk, Deniz; Durusoy, Begum; Kaya, YalcinIn the study, oleoresin containing capsaicin was extracted by solvent extraction from red hot pepper peel and seeds (extract of oleoresin containing capsaicin, OCE) and were used in yogurt production. Thus, it is aimed to obtain a product with richer nutritional value and a new taste. For this purpose, oleoresin extracts that obtained from peel (peel extracts, PE), peel and seed (PSE), and seeds (seed extracts, SE) were added to milk with different percentages. Color characteristics were measured by a Minolta Colorimeter. There were reductions in L* (60.44-29.77) of yogurt samples by enriched process, especially for samples which contain 3% PSE and 1.5% PSE. A remarkable increase was noticed for a* values from -1.44 to 19.35 for the same samples. It was pointed out by the consumers that bitterness in taste as well as the red color in appearance are experienced. Practical applications With the acceptance of new nutritional perceptions, the food processing is complimenting current foods, with herbs, fruits, vegetables, or their extracts especially to create functional foods. Besides, obtaining new tastes has high importance for this aim. Our results pointed out that the fermented yogurt content has better quality and sensorial properties with capsaicin extracts in comparison with traditional fermented yogurt.Öğe Öğe Sunflower (Helianthus annuus L.) genetic resources, production and researches in Turkey(Edp Sciences S A, 2019) Tan, Ahmet Semsettin; Kaya, YalcinSunflower is one of the leading oilseed crops and it is widely grown in the Thrace region of Turkey. In 2017, in Turkey as a whole, oilseed and confectionary sunflowers were grown on 779.622 ha with a total production of 1 964 385 t of seed, and average yields of 2.64 t ha(-1) for oilseed and 1.67 t ha(-1) for confectionary types. Turkey is one of the important countries for crop diversity and has been described as a microcenter for some crops, which originated in different parts of the world. Landraces of sunflower (Helianthus annuus L.) show significant diversity in Turkey and have been collected in the framework of the National Industrial Plant Genetic Resources Project (NPGRP). Nine hundred and thirty two oilseed and confectionary sunflower accessions are in longterm conservation in the National Seed Gene Bank of Turkey. The mission of the National Sunflower Research Project is to develop improved germplasm and hybrid varieties by conventional and biotechnical breeding techniques in Turkey. New germplasm and breeding lines have been developed to improve oilseed and confectionary sunflower hybrids with desired characters including high yield and oil quality, resistance to diseases such as: Plasmopara halstedii (Farl.) Berl de Toni., Puccinia helianthi Schw., and Orobanche cumana Walr. Adverse conditions are also taken under consideration. These studies are integrated with agronomic and other related research.