Marine plants and macroalgae

2021 ◽  
pp. 225-249
Keyword(s):  
2020 ◽  
Vol 10 (4) ◽  
pp. 93-97
Author(s):  
Anil Kumar A ◽  
Raja Sheker K ◽  
Naveen B ◽  
Abhilash G ◽  
Akila CR

Seas assets that give us a variety of characteristic items to control bacterial, contagious and viral ailment and mostly utilized for malignancy chemotherapy practically from spineless creatures, for example, bryozoans, wipes, delicate corals, coelenterates, ocean fans, ocean bunnies, molluscs and echinoderms. In the previous 30 - 40 years, marine plants and creatures have been the focal point of overall endeavours to characterize the regular results of the marine condition. Numerous marine characteristic items have been effectively exceptional to the last phases of clinical preliminaries, including dolastatin-10, a group of peptides disengaged from Indian ocean rabbit, Dollabella auricularia. Ecteinascidin-743 from mangrove tunicate Ecteinascidia turbinata, Didemnins was isolated from Caribbean tunicate Trididemnum solidum and Conopeptides from cone snails (Conus sp.), and a developing number of up-and-comers have been chosen as promising leads for expanded pre-clinical appraisals. Sea anemones possess numerous tentacles containing stinging cells or cnidocytes. The stinging cells are equipped with small organelles known as nematocysts. The two species of sea anemones namely, Heteractis magnificaandStichodactyla haddoni, were collected from Mandapam coastal waters of Ramanathapuram district, Tamilnadu, India. The Nematocyst was collected and centrifuged, and the supernatant was lyophilized and stored for further analysis. The amount of protein from Heteractis Magnifica and Stichodactyla haddoni was estimated. The crude extract has shown haemolytic activity on chicken blood and goat blood. In the antibacterial activity of the sea anemone against six bacterial strains Staphylococcus aureus, Salmonella typhii, Salmonella paratyphii, Klebsiella pneumonia, Vibrio cholerae, Pseudomonas aeruginosa. Antibacterial activity of H. Magnifica and S.haddoni was measured as the radius of the zone of inhibition.


2018 ◽  
Vol 53 (12) ◽  
pp. 1697-1703
Author(s):  
Aldi Kuqo ◽  
Arjan Korpa ◽  
Nikolla Dhamo

Posidonia oceanica leaves (seagrass) are collected almost in all the Mediterranean seashores as spoils and disturbing material with additional cost for removal from the coastline. Seagrass, however, is known for its interesting properties, such as decay, fire and moisture resistance as well as insulation. Research for using this material in composing boards was initiated. This study looks into the possibility of using these waste marine plants for the production of alternative building material in the form of pressed panels. The paper describes the pretreatment of seagrass leaves before their processing for composite boards and the examination of its final product. The residence time for salts desorption was also determined. The main processes analyzed were the binder spraying and panel forming. Mechanical properties were evaluated by the standardized flexural tests. In addition, swelling properties were investigated. Results obtained from testing and observation of boards indicated that seagrass leaves are propitious for the application in construction and furniture industry.


Nature ◽  
1959 ◽  
Vol 183 (4671) ◽  
pp. 1338-1339 ◽  
Author(s):  
PAUL R. BURKHOLDER ◽  
LILLIAN M. BURKHOLDER ◽  
JUAN A. RIVERO
Keyword(s):  

1997 ◽  
Vol 40 (1-6) ◽  
Author(s):  
Prabha Devi ◽  
W. Solimabi ◽  
L. D’Souza ◽  
S. Sonak ◽  
S. Y. Kamat ◽  
...  

2021 ◽  
Vol 8 ◽  
Author(s):  
Vânia P. Roberto ◽  
Gwladys Surget ◽  
Klervi Le Lann ◽  
Sara Mira ◽  
Marco Tarasco ◽  
...  

Osteoporosis is an aging-related disease and a worldwide health issue. Current therapeutics have failed to reduce the prevalence of osteoporosis in the human population, thus the discovery of compounds with bone anabolic properties that could be the basis of next generation drugs is a priority. Marine plants contain a wide range of bioactive compounds and the presence of osteoactive phytochemicals was investigated in two halophytes collected in Brittany (France): the invasive Spartina alterniflora and the native Salicornia fragilis. Two semi-purified fractions, prepared through liquid-liquid extraction, were assessed for phenolic and flavonoid contents, and for the presence of antioxidant, mineralogenic and osteogenic bioactivities. Ethyl acetate fraction (EAF) was rich in phenolic compounds and exhibited the highest antioxidant activity. While S. fragilis EAF only triggered a weak proliferative effect in vitro, S. alterniflora EAF potently induced extracellular matrix mineralization (7-fold at 250 μg/mL). A strong osteogenic effect was also observed in vivo using zebrafish operculum assay (2.5-fold at 10 μg/mL in 9-dpf larvae). Results indicate that polyphenol rich EAF of S. alterniflora has both antioxidant and bone anabolic activities. As an invasive species, this marine plant may represent a sustainable source of molecules for therapeutic applications in bone disorders.


2018 ◽  
Author(s):  
Donna M Gibbs ◽  
Charles J Gibbs ◽  
Jessica A Schultz

Since 2014 divers from Ocean Wise have been SCUBA diving in the Cambridge Bay, Nunavut area collecting data on fishes, invertebrates and marine plants at numerous sites. For each dive a file is created that catalogues the species found and a rough abundance of that species. These files accumulate over time and are searchable by location, year, year and month, month, species and a number of other criteria with custom software created for this purpose. Relationships between species is automatic with the searches. In addition to the species catalogue that began in 2014, data has been scrounged from previous collecting trips by staff and personal dive logs before 2014, allowing for comparison between Pond Inlet, Resolute and Cambridge Bay. We were able to flag a potential decline in one species in 2017 thanks to our previous data. Our goal is to work cooperatively with others diving in the Arctic to grow this database through photography and dive records. At this point we have 149 dives/records and 279 species recorded. The database is used to support the Nearshore Ecological Surveys and the Arctic Marine Ecological Benchmarking Program reports. In addition to biodiversity data, temperature, salinity, pH and dissolved oxygen are also collected while in the area.


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