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    Full Blooming Stage is Suitable for Herbage Yield and Essential Oil Content of Summer Savory (Satureja hortensis L.)
    (Taylor & Francis Ltd, 2009) Kizil, Sueleyman; Turk, Murat; Ozguven, Mensure; Khawar, Khalid M.
    The study reports determination of appropriate-development stage, its effects on herbage yield and essential oil content compositions of summer savory (Satureja hortensis L). The essential oil of summer savory was isolated by steam distillation and analysed by GC-MS. The results indicated that the highest dry leaf yield, fresh and dry herbage yield were obtained at post and full blooming stage. However, the highest essential oil content of 2.6% was obtained at full blooming stage. Major essential oil components of summer savory were determined as thymol, gamma-terpinene, carvacrol and cymol in ratio of 47.9, 19.6, 14.7 and 9.7%, respectively. Thymol percentage increased at post harvest stage, in contrast to gamma-terpinene. The results suggest that to achieve maximum oil yield for profitable income harvest should be done at full blooming stage.
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    Microelement contents and fatty acid compositions of Rhus coriaria L. and Pistacia terebinthus L. fruits spread commonly in the south eastern Anatolia region of Turkey
    (Taylor & Francis Ltd, 2010) Kizil, Sueleyman; Turk, Murat
    Sumac (Rhus coriaria L.) and terebinth (Pistacia terebinthus L.) are two important spice plants of south eastern Anatolia, Turkey. Nutrients, physical properties including moisture, ash, dry matter, protein, fatty oil and essential oil content, along with Al, Ca, Cd, Cr, Cu, Fe, K, Mg, Na, Ni, Pb, Zn and characteristics of fruit sizes and fatty acid compositions of both plants were determined from ripe fruits. The free fatty acid content was determined in the fruit oil, and the main fatty acids of sumac and terebinth were identified by gas chromatography/mass spectrometry. They included oleic, linoleic, palmitic and stearic acids in a ratio of 37.7% and 34.8%, 27.4% and 17.3%, 21.1% and 21.7% and, 4.7% and 2.5%, respectively. The fruits of both plants were rich in oil, fatty acids and minerals, suggesting that they are valuable for using in food. The data may also be useful for the evaluation of nutritional information.
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    Microelement Contents and Fatty Acid Compositions of some Isatis Species Seeds
    (Univ Agr Sci & Veterinary Med Cluj-Napoca, 2009) Kizil, Sueleyman; Turk, Murat; Cakmak, Oezlem; Ozguven, Mensure; Khawar, Khalid Mahmood
    Isatis species are important biennial, herbaceous shrubs represented by 40 taxa, of which 24 are endemic to Turkey. The chemical compounds found in leaves and roots of all Isatis species have medicinal properties and arc used for treatment of a wide range of disorders. No study reports seed characteristics, microelement contents and fatty acid compositions of the seeds of any Isatis species except I. tinctoria. Therefore the study was carried out to find seed fatty oil, fatty acid compositions protein content, characteristics, and microelement contents of I. aucheri, I. cochlearis, I. constricta, I. demiriziana (endemic), I glauca and I. lusitanica. The results showed fatty oil and protein content of these species in range of 2 to 10% and 16.07 to 25.17%, respectively. Furthermore, these seeds were rich in microelements Al, Ca, Fe, K, Mg, Na and P. Major fatty oil components of these species were determined as erucic, oleic, linoleic and linolenic acid; such that erucic acid content of these species ranged 16.94 to 30.52%.
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    SOME AGRONOMIC CHARACTERISTICS AND ESSENTIAL OIL COMPOSITION OF HYSSOP (Hyssopus officinalis L.) UNDER CULTIVATION CONDITIONS
    (Wydawnictwo Akad Rolniczej W Lublinie, 2016) Kizil, Suleyman; Guler, Vedat; Kirici, Saliha; Turk, Murat
    Hyssop (Hyssopus officinalis L.) is an aromatic and medicinal perennial herb native to Southern Europe and temperate regions of Asia. The study aimed to determine the effect of different plant parts harvested at different flowering stages: pre-flowering, full-flowering and post-flowering, in some agronomical characteristics, essential oil yield and components of hyssop plant in semi-arid climatic conditions of South Eastern Anatolia, Diyarbakir, Turkey. The results showed that both flowering stages and plant parts had important effects on fresh, dry herbage, dry leaf yield of hyssop, as well as essential oil content. It was concluded that under semi-arid climatic conditions, hyssop plant could be grown successfully in conformity to the limits of ISO standards and harvest from top parts of the plants at full flowering stage could be preferred for maximum dry leaf yield and essential oil contents.