scholarly journals Benthic Marine Algae on Japanese Tsunami Marine Debris – a morphological documentation of the species. Part 2 – The brown algae

Author(s):  
Hiroshi Kawai ◽  
Gayle Hansen ◽  
Takeaki Hanyuda
Phycologia ◽  
2018 ◽  
Vol 57 (6) ◽  
pp. 641-658 ◽  
Author(s):  
Gayle I. Hansen ◽  
Takeaki Hanyuda ◽  
Hiroshi Kawai
Keyword(s):  

Brunonia ◽  
1983 ◽  
Vol 6 (1) ◽  
pp. 73 ◽  
Author(s):  
BM Allender ◽  
GT Kraft

Lord Howe Island (31�33'S., lat.; 159�05'E. long.) lies c. 600 km east of the Australian mainland and is fringed by the world's southernmost coral reefs. It possesses a rich marine flora which is heavily dominated by brown algae of the order Dictyotales, of which 22 species in 11 genera occur on the island. Most species show tropical affinities, although several have restricted occurrences on the central eastern seaboard of the continent in addition to Lord Howe, and a few are recorded from the Kermadec Islands some 2150 km further east. Two species (Distromium didymothrix; Pachydictyon aegerrime) and two varieties (Stypopodium flabelliforme var. rhabdoides; Dictyota bartayresii var. plectens) are described as new and are at present known only from the island, while Padina boergesenii has been erected for a well known Caribbean species also found at Lord Howe and which, following examination of type material, can no longer be properly referred to P. gymnospora (Kuetz.) Vickers. Two new combinations [Stypopodium australasicum (Zan.) Allender & Kraft; Dilophus intermedius (Zan.) Allender & Kraft] are also made. The order Cutleriales is represented at Lord Howe by a single newly described species, Cutleria mollis, whose abundant sporophytic (Aglaozonia) stage is very Zonaria-like in habit.


2021 ◽  
Vol 11 (1) ◽  
pp. 060-072
Author(s):  
Luane Oliveira Araújo ◽  
Jessyca Karoline de Oliveira Silva ◽  
Beatriz Alves de Aguiar ◽  
Julliene Larissa dos Santos Bezerra ◽  
Aline de Queiroz Rodrigues ◽  
...  

Marine environment exploration has increased in the search for new compounds that may be attractive to the industrial field, especially for the development of drugs. Brown marine algae are part of this environment and, because of their production of secondary metabolites, they have become a possible source of bioactive compounds that have important biological actions such as anticoagulant, antioxidant and antiproliferative. However, there are still obstacles to complete knowledge about their structures and activities. This review provides key information about the isolation, composition, and structure and antiproliferative activity in vitro and in vitro of compounds derived from different brown algae.


Biomolecules ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 244 ◽  
Author(s):  
Ivana Generalić Mekinić ◽  
Danijela Skroza ◽  
Vida Šimat ◽  
Imen Hamed ◽  
Martina Čagalj ◽  
...  

Over the last few decades, isolations and chemical characterizations of secondary metabolites with proved biological activities have been of interest for numerous research groups across the world. Phenolics, as one of the largest and most widely distributed group of phytochemicals, have gained special attention due to their pharmacological activity and array of health-promoting benefits. Reports on phenolic potentials of marine algae, especially brown algae (Pheophyceae) that are characterized by the presence of phlorotannins, are still scarce. The aim of this review paper is to provide an overview of current knowledge about phenolic potential of different brown algae species (74 species from 7 different orders). Studies on brown algae phenolics usually involve few species, thus the focus of this review is to provide information about the phenolic potential of reported algae species and to get an insight into some issues related to the applied extraction procedures and determination/quantification methods to facilitate the comparison of results from different studies. The information provided through this review should be useful for the design and interpretation of studies investigating the brown algae as a source of valuable phytochemicals.


ARCTIC ◽  
1957 ◽  
Vol 10 (1) ◽  
pp. 45 ◽  
Author(s):  
John L. Mohr ◽  
Norman J. Wilimovsky ◽  
E. Yale Dawson

Reports the discovery of a kelp bed near Point Barrow and describes its composition, both red and brown algae and associated fauna: a few polychaetous annelids, arthropods and six fishes, one, Enophrys diceraus new to arctic waters and kelp beds are rare in arctic Alaska waters limited in species and in number of individuals. The general poverty of marine algae is thought due to the prevalence of sediments north of Alaska and to silting effects by sea ice in winter.


1962 ◽  
Vol 40 (10) ◽  
pp. 1401-1406 ◽  
Author(s):  
E. Reiner ◽  
J. Topliff ◽  
J. D. Wood

Sterols isolated from two species of marine brown algae, Fucus gardneri and Sargassum muticum, were fed to young Leghorn cockerels. Both sterols caused a significant diminution in plasma cholesterol level.


2020 ◽  
Vol 6 (1) ◽  
Author(s):  
Masuma M. Hakim ◽  
Illa C. Patel

Abstract Background From the last few years, the development and discovery of bioactive compounds and their potential properties from marine algae have been enhanced significantly. The coastal area is a huge storehouse for propitious algae. It has been the genuine reality that the consequence of marine algae as a source of different compounds is increasing. Main body Numerous advanced research devices are available for the discovery of synthetic compounds but still many researchers are working on natural bioactive compounds to discover their biological properties, which are useful to society. Marine algae are taking the preponderance of consideration from investigators owing to its phenomenon of biological activity like anti-cancer, anti-viral, cholesterol-reducing, and many more. A variety of compounds are collected from algae with specific purposes as they remain in an extremely ambitious and hard state; this condition is responsible for the synthesis of very particularly effective bioactive compounds. The present article is concentrating on the brown algae of the Gujarat coast, phlorotannins, polyphenol, phytosterol from brown algae, and their various applications. The main importance has been given to the secondary metabolites and various applications of marine brown algae. Conclusion From this review, it can be concluded that the prominent bioactive compounds from brown algae can cure many serious diseases. Besides, the potential biological activities of a special bioactive compound may represent the interest in the industry of pharmaceuticals, cosmeceutical, and functional foods.


Author(s):  
W. A. P. Black ◽  
R. L. Mitchell

Sea water probably contains all the chemical elements, although a number of them have not yet been detected. Considerable information is available on the occurrence of various elements in marine plants and animals, but it is far from complete for any one biological group. Except for recent work by Spooner (1949), on the absorption of radioactive strontium and yttrium by marine algae, no detailed study of the trace elements in the brown algae, nor any attempt to correlate the trace elements in sea water with those in the algae, appears to have been carried out. The following is a brief résumé of the work that has been done in this field.


1958 ◽  
Vol 36 (3) ◽  
pp. 337-349 ◽  
Author(s):  
R. G. S. Bidwell

The rates and products of photosynthesis of 14 species of brown, red, and green marine algae have been determined. C14O2 was supplied in a special apparatus which gave a continuous record of uptake. This apparatus is described in detail. The products of photosynthesis were extracted, separated by paper chromatography, and their radioactivity was determined. The main product was invariably mannitol in the brown algae, floridoside or a glycerol-mannoside in the reds, and sucrose in the greens. Hydrolysis of the insoluble residues released radioactive amino acids, glucose, galactose, and other carbohydrates. Although the soluble products were characteristic of each group, the insoluble products were much the same in all three groups. The rates of CO2 assimilation ranged from [Formula: see text] to 4 mg. of CO2 per hour per gram of fresh plant. No correlation of the rate of CO2 uptake was observed with either the morphology or the taxonomy of the algae.


1962 ◽  
Vol 40 (1) ◽  
pp. 1401-1406 ◽  
Author(s):  
E. Reiner ◽  
J. Topliff ◽  
J. D. Wood

Sterols isolated from two species of marine brown algae, Fucus gardneri and Sargassum muticum, were fed to young Leghorn cockerels. Both sterols caused a significant diminution in plasma cholesterol level.


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