ALGAE

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The document discusses different types of algae including green algae like Spirogyra that populate ponds, red algae which is a source of agar, and brown algae which is a source of algin. It describes how some algae like Chlamydomonas and Oscillatoria swim while Pediastrum has an exceptional beauty. The document outlines life cycles of various algae including fragmentation and formation of daughter colonies in Volvox, zoospore formation in Ulothrix, and isogamy in Spirogyra. It also discusses uses of algae including agar from red algae, iodine from brown algae, and nitrogen fixation by Nostoc and Anaba

Education Technology Health & Medicine

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CHLORELLA - RICH IN PROTEINS AND VITAMINS

About 20,000 species. Eukaryotic cell and contain all the membrane bound organelles. Thallus is green due to the presence of green pigment chlorophyll. Chlorophyll is contained in chloroplast. Pyrenoids embedded in chloroplast. Cytoplasm contains vacuoles. Motile cell of primitive forms contains eye spot or stigma. Reserve carbohydrates are in the form of starch. Cell wall invariably contains cellulose. Produce motile reproductive bodies generally with two or four flagella. Most are aquatic but some are subarial. Several species of ulvales and siphonales are marine. Some strains of chlorella are thermophilic. Species of chlamydomonas and some chlorococcales occur in snow. Coloechaete nitellarum is endophytic. Cephaleuros is parasitic – cause ‘red rust of tea’. Live epizoically on or endozoically within the bodies of lower animals – chlorella is found in hydra; chlorella beneath the scales of fish; characium on the antennae of mosquito. Green algae in assosciation with the fungi constitute lichens.

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Green macroalgae Ulva lactuca, brown macroalgae Taonia atomaria and Padina pavonica are spread in the Turkish Levantine Sea. There is limited information about antioxidant activities and fatty acid composition of these species from Levantine Sea. In this study was to determine and compare antioxidant activities, vitamin and fatty acid (FA) composition of U. lactuca, T. atomaria and P. pavonica. The analysis was made with HPLC and GC device. g. Then, the results were analyzed using SPSS software. The results showed; palmitic acid (C16:0) as the most abundant saturate fatty acid (21-41%). The green algae was rich palmitic acid (C16:0) (41.68%). Monounsaturated fatty acids (MUFAs) were major components (39.81–42.89%). The total MUFA content for U. lactuca was 40.63%, P. pavonica 42.89% and for T. atomaria 38.81%. Oleic acid (C18:1 n-9) was the most abundant MUFA in all the species analyzed. Eicosapentaenoic acid ( C20:5 n-3) and arahidonic acid (C20:4 n-6) were found in significant levels in T. atomaria. P. pavonica and T. atomaria showed similar amounts of C18 and C20 PUFAs contents. In T. atomaria eicosopentaenoic acid (EPA, C20:5n3) accounted 4.78% of total fatty acids. PUFA/SFA ratio in T. atomaria was 1.10%, U. lactuca; 0.26% and for P. pavonica 0.68%.The total phenolic contents ranged from 0.96 to 2.22 mg gallic acid equivalents per 1 g of dry macroalgae material. Phenolic content of the water extract of T. atomaria (2.22 mg GAE /g) was higher than that of the water extract of P. pavonica and U. lactuca. It has been thought that the amount of α-tocoferol was higher than the other lipophilic vitamins in all the three species tested. In Conclusion; these species can be used as food and in food industry.

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