Seasonal Changes in Proximate and Bioactive Compounds of Brown and Red Seaweeds from İskenderun Bay, the North-Eastern Mediterranean Sea
Year 2023,
, 33 - 43, 04.07.2023
İbrahim Gür
,
Sevim Polat
Abstract
Proximate and bioactive compounds (total phenolic, flavonoid, chlorophyll-a and total carotenoid contents) of three brown seaweeds (Dictyota dichotoma, Padina pavonica, Stypopodium schimperi) and a red seaweed (Jania rubens) from the north-eastern Mediterranean Sea (İskenderun Bay) were investigated seasonally at three sampling sites. Seasonal variations were found for all of the parameters studied. The highest ash content was in J. rubens (77.7%) in the spring. The results showed that J. rubens is a rich source with respect to mineral content. D. dichotoma had the highest crude protein content, whereas S. schimperi contained the most lipids. Phenolics ranged between 34.6 - 107.0 mg GAE/g dw. The highest total phenolics were found in S. schimperi in the summer, and the lowest in P. pavonica in the spring. The flavonoid contents (9.05-10.6 mg QE/g dw) were higher in brown seaweeds than that in the red seaweed. Moreover, chlorophyll-a and carotenoids levels were highest in D. dichotoma (4.53 and 2.83 mg/g, respectively) during the autumn. The results revealed that the biochemical composition of the examined seaweeds showed significant changes depending on the species, location and seasons.
Supporting Institution
Scientific Research Project Fund of Cukurova University
Project Number
SÜF2013YL4
Thanks
This study was produced from İbrahim Gür's MSc Thesis. The authors are grateful to the Scientific Research Project Fund of Cukurova University for their support of Research Project.
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İskenderun Körfezi'ndeki (Kuzeydoğu Akdeniz) Kahverengi ve Kırmızı Makroalglerin Temel Besin Maddesi ve Biyoaktif Bileşiklerindeki Mevsimsel Değişimler
Year 2023,
, 33 - 43, 04.07.2023
İbrahim Gür
,
Sevim Polat
Abstract
Kuzeydoğu Akdeniz'de (İskenderun Körfezi) dağılım gösteren üç kahverengi (Dictyota dichotoma, Padina pavonica, Stypopodium schimperi) ve bir kırmızı makroalgin (Jania rubens) temel besin maddesi ve biyoaktif bileşikleri (toplam fenolik, flavonoid, klorofil-a ve toplam karotenoid içerikleri) üç örnekleme istasyonunda mevsimsel olarak incelenmiştir. İncelenen tüm parametrelerin mevsimsel değişimler gösterdiği belirlenmiştir. En yüksek kül içeriği ilkbaharda J. rubens türünde (%77.7) bulunmuştur. Sonuçlar, bu türün zengin bir mineral kaynağı olduğunu göstermiştir. D. dichotoma en yüksek ham protein içeriğine, S. schimperi ise en fazla lipit içeriğine sahip tür olmuştur. Makroalglerde fenolik madde içeriği 34.6 ile 107.0 mg GAE/g kuru ağ. arasında değişmiştir. Toplam fenolik madde miktarı yazın S. schimperi türünde en yüksek düzeye ulaşırken, en düşük değer ilkbaharda P. pavonica türünde bulunmuştur. Flavonoid içerikleri (9.05-10.6 mg QE/g kuru ağ.) kahverengi deniz yosunlarında kırmızı deniz yosunundan daha yüksek bulunmuştur. Klorofil-a ve karotenoid içeriği ise D. dichotoma türünde sonbahar mevsiminde en yüksek düzeylerde (sırasıyla 4.53 ve 2.83 mg/g) bulunmuştur. Sonuçlar, incelenen makroalg türlerinin biyokimyasal kompozisyonunun türe, lokaliteye ve mevsimlere bağlı olarak belirgin değişimler gösterebileceğini ortaya koymuştur.
Project Number
SÜF2013YL4
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- İrkin, L.C. & Erdugan, H. (2016). Seasonal variation in ash, lipid and protein contents of Scytosiphon lomentaria Lyngbye and Palisada perforata Bory de Saint-Vincent along Çanakkale Strait (Dardanelles), Turkey, Marine Science and Technology Bulletin, 4 (2), 1-4.
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- Machu, L., Misurcova, L., Ambrozova, J.V., Orsavova, J., Mlcek, J., Sochor, J., Jurikova, T. (2015). Phenolic content and antioxidant capacity in algal food products, Molecules, 20, 1118-1133. doi.org/10.3390/molecules20011118
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