Phytochemical and Antimicrobial Analysis of Portieria Hornemannii, A Marine Red Macro Algae

This paper exhibites species composition and distribution of marine seaweed at 10 sites of Co To and Thanh Lan islands in May 2019. The studies record 76 species of marine algae in the area, belonging to four divisions: Cyanophytes, Rhodophytes, Ochrophytes and Chlorophytes. Among them, five species are classified into Cyanophytes (comprising 6.6% of total species); thirty-four species into Rhodophytes (44.7%); twenty-one species into Ochrophytes/Phaeophytes (27.6%) and sixteen species into Chlorophytes (21.1%). The species composition of marine seaweeds in Co To and Thanh Lan shows significant differences as follows: 22 species (sites number 4 and 10) to 58 species (site number 2) and the average value is 38.7 species per site. Sørensen similarity coefficient fluctuates from 0.33 (sites number 5 and 10) to 0.84 (sites number 1 and 3) and the average value is 0.53. The current investigations show that four species of twenty-one species are collected in the littoral zone and forty-two species in the sub-littoral zone (in which there are thirteen species distributed in both littoral zone and sub-littoral zone). The algal flora in Co To and Thanh Lan is characterized by subtropics.

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Recent Developments in the Downstream Processing of Phycobiliproteins from Algae: A Review

Current Biochemical Engineering ◽

10.2174/2212711906999210101230613 ◽

2021 ◽

Vol 06 ◽

Author(s):

Ayekpam Chandralekha Devi ◽

G. K. Hamsavi ◽

Simran Sahota ◽

Rochak Mittal ◽

Hrishikesh A. Tavanandi ◽

...

Keyword(s):

Cell Wall ◽

Large Scale ◽

Downstream Processing ◽

Review Article ◽

Current Status ◽

Wall Structure ◽

Scale Production ◽

Cell Wall Disruption ◽

Recent Developments ◽

Macro Algae

Abstract: Algae (both micro and macro) have gained huge attention in the recent past for their high commercial value products. They are the source of various biomolecules of commercial applications ranging from nutraceuticals to fuels. Phycobiliproteins are one such high value low volume compounds which are mainly obtained from micro and macro algae. In order to tap the bioresource, a significant amount of work has been carried out for large scale production of algal biomass. However, work on downstream processing aspects of phycobiliproteins (PBPs) from algae is scarce, especially in case of macroalgae. There are several difficulties in cell wall disruption of both micro and macro algae because of their cell wall structure and compositions. At the same time, there are several challenges in the purification of phycobiliproteins. The current review article focuses on the recent developments in downstream processing of phycobiliproteins (mainly phycocyanins and phycoerythrins) from micro and macroalgae. The current status, the recent advancements and potential technologies (that are under development) are summarised in this review article besides providing future directions for the present research area.

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A Review of Antiviral and Antioxidant Activity of Bioactive Metabolite of Macroalgae within an Optimized Extraction Method

Energies ◽

10.3390/en14113092 ◽

2021 ◽

Vol 14 (11) ◽

pp. 3092

Author(s):

Rasha El-Shafei ◽

Hala Hegazy ◽

Bishnu Acharya

Keyword(s):

Antioxidant Activity ◽

Herpes Simplex Virus ◽

Herpes Simplex ◽

Extraction Method ◽

Bioactive Metabolites ◽

Active Metabolites ◽

Bioactive Metabolite ◽

Conventional Extraction ◽

Simplex Virus ◽

Macro Algae

Non-conventional extraction of bioactive metabolites could provide sustainable alternative techniques to preserve the potency of antioxidants and antiviral compounds extracted from macro-algae. In this paper, we first reviewed the antioxidant and antiviral potential of the active metabolites that exist in the three known macro-algae classes; Phaeophyceae, Rhodophyceae, and Chlorophyceae, and a comparison between their activities is discussed. Secondly, a review of conventional and non-conventional extraction methods is undertaken. The review then focused on identifying the optimal extraction method of sulphated polysaccharide from macro-algae that exhibits both antiviral and antioxidant activity. The review finds that species belonging to the Phaeophyceae and Rhodophceae classes are primarily potent against herpes simplex virus, followed by human immunodeficiency virus and influenza virus. At the same time, species belonging to Chlorophyceae class are recorded by most of the scholars to have antiviral activity against herpes simplex virus 1. Additionally, all three macro-algae classes exhibit antioxidant activity, the potency of which is a factor of the molecular structure of the bioactive metabolite as well as the extraction method applied.

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Brown macro-algae as natural cation exchangers for the treatment of zinc containing wastewaters generated in the galvanizing process

Journal of Cleaner Production ◽

10.1016/j.jclepro.2016.02.003 ◽

2016 ◽

Vol 119 ◽

pp. 38-49 ◽

Cited By ~ 30

Author(s):

Tatiana A. Pozdniakova ◽

Luciana P. Mazur ◽

Rui A.R. Boaventura ◽

Vítor J.P. Vilar

Keyword(s):

Cation Exchangers ◽

Macro Algae

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Do algae blooms dilute the risk of trematode infections in threespine sticklebacks?

Current Zoology ◽

10.1093/czoolo/61.6.991 ◽

2015 ◽

Vol 61 (6) ◽

pp. 991-995 ◽

Cited By ~ 1

Author(s):

Alexandre Budria ◽

Ulrika Candolin

Keyword(s):

Body Size ◽

Gasterosteus Aculeatus ◽

Infected Fish ◽

The Body ◽

Filamentous Algae ◽

Intermediate Hosts ◽

Diplostomum Pseudospathaceum ◽

The Difference ◽

Trematode Infections ◽

Macro Algae

Abstract Human-induced growth of macro-algae is often assumed to increase trematode infections in fishes by increasing the abundance and condition of the parasite’s intermediate host – snails – as this can boost the release of trematode larvae, cercariae, from the intermediate hosts. However, macro-algae can also impose barriers to the transmission of cercariae and reduce infections. We investigated whether an increased growth of filamentous algae affects the transmission of Diplostomum pseudospathaceum cercariae to the threespine stickleback Gasterosteus aculeatus, a common fish in eutrophied shallow waters. We exposed sticklebacks to trematode cercariae in the absence and presence of artificial filamentous algae, and recorded effects on the proportion of sticklebacks infected and the number of encysted metacercariae per fish. No significant effect of artificial algae on cercariae transmission was detected. However, the body size and the sex of the sticklebacks were strongly correlated with the number of encysted metacercariae per infected fish, with females and larger individuals being more infected. We discuss different factors that could have caused the difference in parasite transmission, including sex-related differences in body size and behaviour of sticklebacks.

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