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Halymeniales
Halymeniales is an order of red algae belonging to the class Florideophyceae and the subclass Rhodymeniophycidae. The type species is ''Halymenia'' . The red algae colour comes from photosynthetic pigments (phycoerythrin, phycocyanin, allophycocyanin). Then the various blends of relative amounts of these 3 and chlorophyll, influences the plant colour, which can vary from dark red to blue, brown, or greenish. History In 1996, Saunders and Kraft recognized a new name, the Halymeniales, for the red algal order that was previously known as the ''Cryptonemiales'' , based on small-subunit rRNA phylogenetic analyses. The adapted order of Halymeniales originally held the families of ''Halymeniaceae'' and ''Sebdeniaceae'' , and it was characterized by taxa with a multi-axial thallus, non-procarpic female reproductive development, outwardly directed carpogonial branches and intercalary auxiliary cells (Saunders and Kraft, 1996). Later Saunders and Kraft in 2002, transferred the genus ''T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Galactan
Galactan (galactosan) is a polysaccharide consisting of polymerized galactose. In general, galactans in natural sources contain a core of galactose units connected by α(1→3) or α(1→6), with structures containing other monosaccharides as side-chains. Galactan derived from '' Anogeissus latifolia'' is primarily α(1→6), but galactan from acacia trees is primarily α(1→3). '' Halymenia durvillei'' is a red seaweed (algae) with a great potential as sulphated galactan producer. Several other alga species also contain galactans. Including '' Carpopeltis .I.J. Miller and J. Mollion, Evaluation of the structures of galactans from ''Carpopeltis'' sp. a member of the Halymeniales in the western Indian Ocean, Bot. Mar., 49 (2006) 79-85 See also * Agar * Galactooligosaccharide Galactooligosaccharides (GOS), also known as oligogalactosyllactose, oligogalactose, oligolactose or transgalactooligosaccharides (TOS), belong to the group of prebiotics. Prebiotics are defined as non-di ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |