Fatty Acid and Amino Acid Profiles in Some Dune Vegetation Species from Istanbul

Yıl 2019, Cilt: 23 Sayı: 3, 892 - 903, 25.12.2019

Samet Taç , Tamer Özcan

https://doi.org/10.19113/sdufenbed.555767

Öz

Dunes are one of the most dynamic ecosystems in the
nature and they are considered as a special habitat type hosting valuable
genetic resources. Dunes located in Turkey are very rich in terms of plant
diversity. Istanbul has special place for the richness of endemic and rare
species in its dune vegetations. Biochemical characteristics of some plant
species growing in Istanbul dunes, which are under immense threat during the
recent years have been examined in the present study. Seed samples and aerial
parts of the plants have been analysed for fatty acid and amino acid
compositions. The higher concentrations of α-linolenic acid were quantified in Euphorbia paralias (48.24%) and Diplotaxis tenuifolia (24.47%). Linoleic
acid concentrations were detected at the higher levels in Xanthium strumarium (68.51%) and Otanthus maritimus (66.62%). Eryngium
campestre (44.97%), Cyperus capitatus
(44.27%) and Eryngium maritimum
(41.88%) were found to have high oleic acid concentrations. 20,32% punicic acid  was detected in Ecballium elaterium. The higher concentrations of some essential
amino acids were observed in the seeds. Proline is the dominant amino acid in
the aerial parts of all taxa examined. Significant correlations between amino
acid concentrations were calculated. The data obtained in the present study
reveal that regarding plants as novel crops can be efficient for utilization in
biochemical and biotechnological applications in many fields such as human
nutrition, health and other industrial purposes.

Anahtar Kelimeler

Istanbul, Dune, Seed, Halophyte, Fatty acid, Amino acid

İstanbul’daki Bazı Kumul Bitkilerinde Yağ Asidi ve Amino Asit Profilleri

Öz

Kumullar, doğadaki en dinamik ekosistemlerden biridir
ve değerli genetik kaynakları barındıran özel bir yaşam alanı türü olarak kabul
edilirler. Türkiye'de bulunan kumul alanlar bitki çeşitliliği açısından oldukça
zengindir. İstanbul kumul bitkileri de endemik ve nadir türlerin zenginliği
açısından özel bir yere sahiptir. Bu çalışmada, İstanbul kumullarında yetişen
ve son yıllarda büyük tehdit altında olan bazı bitki türlerinin biyokimyasal
özellikleri incelenmiştir. Tohum örneklerinde ve bitkilerin toprak üstü sürgün
kısımlarında yağ asidi ve amino asit bileşimleri analiz edilmiştir. Euphorbia paralias (%48.24) ve Diplotaxis tenuifolia (%24.47)
türlerinde yüksek a-linolenik asit konsantrasyonları ölçülmüştür. Xanthium strumarium (%68.51) ve Otanthus maritimus (%66.62) 'da yüksek
linoleik asit düzeyleri tespit edilmiştir. Eryngium
campestre (%44.97), Cyperus capitatus
(%44.27) ve Eryngium maritimum
(%41.88) yüksek oleik asit içeriklerine sahiptir. Ecballium elaterium’da %20,32 oranında punisik asit saptanmıştır.
Taksonların  tohumlarında bazı esansiyel
amino asitlere yüksek düzeylerde rastlanmıştır. 
Prolin, incelenen tüm taksonların toprak üstü sürgünlerinde baskın olan
amino asittir. Amino asit konsantrasyonları arasında anlamlı korelasyonlar
gözlemlenmiştir (p<0.05). Elde edilen veriler, söz konusu taksonların yeni
ürünler olarak beslenme, sağlık ve diğer endüstriyel alanlardaki biyokimyasal
ve biyoteknolojik uygulamalarda kullanılabileceğini ortaya koymaktadır.

Anahtar Kelimeler

İstanbul, Kumul, Tohum, Halofit, Yağ asidi, Amino asit

Kaynakça

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