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Öğe Alkaloids of marine macroalgae(Springer Berlin Heidelberg, 2013) Güven, Kasım Cemal; Coban, Burak; Sezik, Ekrem; Erdugan, Hüseyin; Kaleağasioğlu, FerdaMarine alkaloids have their origins from marine organisms including marine macroalgae. On the other hand, some marine algal alkaloids such as phenylethylamine derivatives were previously isolated from terrestrial plants. The other groups of alkaloids like indole derivatives and halogenated alkaloids are specific for algae. Most of the indole group alkaloids are concentrated in red algae. Green algae are rich of bromine- and chloride-containing alkaloids. These halogenated alkaloids of algae are not present in terrestrial plants and are specific for algae and sea organisms. Marine algae contain 44 alkaloids, consisting of 1 phenylethylamine, 41 indole, and 1 naphthyridine derivates. In the halogenated alkaloid group, there are 25 bromine-containing compounds, among which 7 have chlorine and 5 have sulfur, additionally. © Springer-Verlag Berlin Heidelberg 2013.Öğe HHCP contamination in marine alga laurencia pyramidalis bory de saint-vincent ex Kützing(2013) Guven, Kasim Cemal; Coban, Burak; Oz?kirimli, Sumru; Erdugan, Hüseyin; Sezik, EkremThis paper describes isolation and indentification of HHCP (Galaxolide®) as pollutant in red alga Laurencia pyramidalis Bory de Saint-Vincent ex Kützing (Syn. Laurencia obtusa var. pyramidata Bory ex J. Agardh) collected from Igneada (Black Sea coast) by GC/MS analysis. It was previously found as a pollutant in Danube River which consequently contaminates the Black Sea. It was suggested that this is a contamination of alga because it was not found in the same species collected from Assos (Çanakkale). This is the first record of HHCP contamination in algae. © by PSP.Öğe Pharmacology of macroalgae alkaloids(Springer Berlin Heidelberg, 2013) Kaleağasioğlu, Ferda; Güven, Kasim Cemal; Sezik, Ekrem; Erdugan, Hüseyin; Coban, BurakConstituents of marine algae gained importance in the last four decades due to the growing interest in their potential for medicinal use. Till today, 44 alkaloids were isolated from macroalgae; some of which were reported to induce important pharmacological effects. These alkaloids can be classified under four groups as 2-phenylethylamine, indole, halogenated indole, and 2,7-naphthyridine derivatives, and each group displays a relatively distinguished activity profile. Overall, pharmacological effect spectrum of macroalga alkaloids is wide and includes neuromodulation, neurotransmission, growth regulation, cytotoxicity, angiogenesis, antioxidation as well as antibacterial, antifungal, and larvicidal activities. © Springer-Verlag Berlin Heidelberg 2013.Öğe Seasonal evaluation of chemical composition of Codium fragile (Suringar) Hariot distributed in Canakkale Strait (Dardanelles), Turkey(Adem Yavuz SÖNMEZ, 2014) İrkin, Latife Ceyda; Erdugan, HüseyinThe significant increase of the World population in recent years has linked researchers to focus on the utilization of marine food resources additional to the terrestrial ones for human consumption. Being an important source of protein and an effective source used not only as fertilizer but also in the industry with its useful chemical content makes them a target topic for research. In the present study, temporal and spatial changes of the chemical compositions of Codium fragile were investigated. The analyses were carried out seasonally (fall, winter, spring and summer). Significant differences were recorded in the findings obtained for the species collected in relation to the seasons and stations.Öğe Seasonal variation in ash, lipid and protein contents of Scytosiphon lomentaria Lyngbye and Palisada perforata Bory de Saint-Vincent along Çanakkale Strait (Dardanelles), Turkey(Adem Yavuz SÖNMEZ, 2015) İrkin, Latife Ceyda; Erdugan, HüseyinAlgae are important components of the marine ecosystem community and have been a popular subject of research because of their biological and ecological roles in the ecosystem and several active algal-derived compounds. Nowadays, agricultural and industrial resources cannot meet the needs of rapidly increasing human population. In countries especially where agricultural production is insufficient, seafood utilization gains importance. Today, the focus of algal research is the utilization of algae as a rich protein source due to their high protein contents and for their nutritional values. Moreover, regular consumption of algae may prevent some diseases and may be important in the treatment of diseases. In the present study, seasonal and geographical changes in the lipid and protein content of two macro algae from Dardanelles were investigated. According to the results, for Scystosiphon simplicissimus, the highest protein level (23.56 ± 0.54%) was recorded in Gelibolu and the minimum protein level (9.87 ± 0.52%) was recorded in Eceabat. The minimum ash amount (20.40 ± 0.44%) was recorded in Eceabat, the highest ash amount (53.05 ± 0.13%) was recorded in Gelibolu. The highest lipid amount (3.53 ± 0.87%) was recorded in Eceabat, the minimum lipid amount (1.19 ± 0.28%) was recorded in İntepe. For Palisada perforata, the highest protein amount (14.81 ± 0.73%) was recorded in winter in Eceabat. The highest lipid level (5.59 ± 0.11%) was recorded in winter in Eceabat. The minimum lipid amount (0.33 ± 0.88%) was recorded in winter in Yapıldak. The minimum protein level (7.74 ± 0.34%) was recorded in summer in Yapıldak. The highest ash amount (33.52 ± 0.66%) was recorded in winter in Yapıldak and the minimum ash amount (22.47 ± 0.86%) was recorded in summer in Eceabat.Öğe Volatile oils from marine macroalgae(Springer Berlin Heidelberg, 2013) Güven, Kasim Cemal; Sezik, Ekrem; Kaleağasioğlu, Ferda; Erdugan, Hüseyin; Coban, Burak; Karakaş, ElifVolatile oils of algae contain a variety of compounds. The main group, terpenes, contains acyclic: linalool, geraniol, citronellol; monocyclic: limonene, 1-8-cineol, p-cymene; bicyclic: ?- and ?-pinene, cadinene, aromatic eugenol, and isoeugenol. The others are benzaldehyde, phenol, p-cresol, various acids, alcohols, aldehydes, amines, ketones, sulfur containing and halogenated compounds. When volatile oil components of algae and terrestrial plants are compared, the algae were found to be relatively poor. Importantly, halogenated compounds occur only in algae, but not in terrestrial plants. In this chapter, we present briefly but comprehensively the occurrence of various volatile compounds in different classes of algae. © Springer-Verlag Berlin Heidelberg 2013.
