Estudo de antioxidantes, potencial bioativo e composição química de Chnoospora minima, Dictyopteris plagiogramma, Padina gymnospora, Sargassum cymosum (Ochrophyta) e Codium isthmocladum (Chlorophyta)

Amorim, Ana Maria Pereira Barreto

doi:10.11606/d.41.2019.tde-18022019-091636

Cited by 3 publications

(3 citation statements)

References 22 publications

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“…In contrast, the results from the present study obtained for the aqueous extracts of beachcast C. isthmocladum in inhibiting HIV-RT were promising. These results are in accordance with Amorim (2018) for the aqueous extract of non-beach-cast C.…”

Section: Discussionsupporting

confidence: 90%

“…Comparing the IC 50 results of beach-cast algae from ES (present study) with the attached ones from the same place in the study of Amorim (2018), it is possible to note that the aqueous extracts of beach-cast algae, especially the red ones (A. seaforthii -18.93 µg.mL -1 , S. clavata -23.84 µg.mL -1 and O. obtusiloba -30.16 µg.mL -1 ), showed higher antiviral activity than non-beach-cast macroalgae (S. cymosum -50 µg.mL -1 , P.…”

Section: Discussionmentioning

confidence: 79%

“…Other studies with Codium species also observed low content of phenolic compounds, low antioxidant potential and high bioactivity (Pinteus et al, 2017). The bioactivity of aqueous extracts from non-beach-cast C. ishtmocladum was also observed by Amorim (2018), with high antiviral and cytotoxicity potential, which was related to the sulfated polysaccharides according to the author. These sulfated polysaccharides have been considered safe additives for many commercial products.…”

Section: Cytotoxicity Activitymentioning

confidence: 75%

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Caracterização química, potencial antioxidante e atividade biológica de macroalgas arribadas do litoral brasileiro

Harb¹

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A wide variety of metabolites extracted from macroalgae is currently used as functional food ingredients, natural nutraceuticals, biomedical materials, cosmetic formulations, as well as in other products that promote human health. One of the major limitations in the search for new extracts or natural products with biological action is the lack of available biomass for studies and even for their bioprospection. In this context, the availability of beach-cast marine algae is a sustainable and highly productive alternative. The main objective of this study was to evaluate the chemical and bioactive potential of extracts from 15 materials of beach-cast marine algae collected from the Brazilian coast to provide subsidies that allow identifying the potentialities and its uses as functional product. The findings showed that the highest antioxidant activities were found in extracts from brown beach-cast algae followed by the extracts of red beach-cast algae, and the lowest activities were detected in the green beach-cast species. The most efficient extracts of beach-cast species with antioxidant properties were from Dictyopteris jolyana, Zonaria tournefortii, and Osmundaria obtusiloba. Regarding antiviral activity, the aqueous extract of Codium isthmocladum and methanolic extracts from D. jolyana, Z. tournefortii Alsidium seaforthii, Spiridia clavata and O. obtusiloba were highly promising, reaching inhibition percentage above 90%. The extracts of Z. tournefortii, A, seaforthii and C. isthmocladum showed high cytotoxicity activity against the tumoral cells strains HL60 (leukemia) and HTC116 (colon) and did not show any cytotoxicity activity against non-tumoral human cells (HGF1). Currently, the large amount of beach-cast seaweeds deposited on the beaches of Brazil is collected and treated as trash, being incinerated or disposed in landfills by the government. Instead of using public resources and making efforts for the removal of this biomass, it is possible to propose different uses for the Brazilian beach-cast seaweeds and transform it into applications for several sectors. Due to the antioxidant, antiviral, nutritional, photoprotective and cytotoxic properties reported for macroalgae, such applied features bring environmental benefits by mitigating coastal pollution generating a usable resource, in addition to ensuring sustainable social and economic development. The review data shown in the literature of Brazilian beach-cast algae shows the relevance and innovation of this study. This is the first report evaluating chemical composition, antioxidant potential, antiviral activity, cytotoxicity potential and photoprotection of extracts from beach-cast algae from the Brazilian coast. The potential of beach-cast seaweeds provides raw-material for several applications, combined with the large amount available on the beaches of certain regions at the Brazilian coast can be better exploited. The present study significantly contributes to increasing knowledge of Brazilian beach-cast algae and their potential uses as well as t...

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Section: Discussionsupporting

confidence: 90%

Section: Discussionmentioning

confidence: 79%

Section: Cytotoxicity Activitymentioning

confidence: 75%

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Caracterização química, potencial antioxidante e atividade biológica de macroalgas arribadas do litoral brasileiro

Harb¹

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Brazilian Beach-Cast Seaweeds: Antioxidant, Photoprotection and Cytotoxicity Properties

Harb

Vega

Bonomi-Barufi

et al. 2022

Waste Biomass Valor

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The potential of seaweed extracts in cosmetic applications have increased with novel development and market. Beneficial biological properties include the ability to struggle aging and anticancer agents. This research aimed to evaluate antioxidant, photoprotective and cytotoxic properties of extracts from beach-cast seaweed species from the Brazilian coast in order to propose an appropriate use of this sustainable resource. Analysis of antioxidant capacity, UV/VIS absorption, quantification of UV photoprotectors, total content of C, N and S, development of cosmetic creams and evaluation of the cytotoxicity activity against tumoral cells lines were performed. The highest antioxidant capacity was found in extracts of brown seaweeds, followed by red seaweeds, with the lowest activity detected in the green seaweed. Same pattern was observed for phenolic compounds. The extracts did not show cytotoxicity activity against healthy human cells. Other forms of extraction and incorporation of the extract into the base creams should be evaluated, the isolation and purification of substances could increase the efficiency of the photoprotective capacity. The species were highly promising and proved to be natural sources of antioxidants and substances with cytotoxicity activity against tumoral cells; therefore, they could be exploited as functional ingredients with specific applications for different types of industries. The application of seaweed extracts in combination with other natural ingredients can help in the design of new cosmetics against the negative effects of UV radiation, in addition to having the great advantage of not presenting toxicity to health or the environment because they are biodegradable. Graphical Abstract

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Anti-HIV activity of methanolic and aqueous extracts of fifteen materials of beach-cast macroalgae: valorization of underused waste biomass

Harb

Chow

2022

Applied Phycology

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Estudo de antioxidantes, potencial bioativo e composição química de Chnoospora minima, Dictyopteris plagiogramma, Padina gymnospora, Sargassum cymosum (Ochrophyta) e Codium isthmocladum (Chlorophyta)

Cited by 3 publications

References 22 publications

Caracterização química, potencial antioxidante e atividade biológica de macroalgas arribadas do litoral brasileiro

Caracterização química, potencial antioxidante e atividade biológica de macroalgas arribadas do litoral brasileiro

Brazilian Beach-Cast Seaweeds: Antioxidant, Photoprotection and Cytotoxicity Properties

Anti-HIV activity of methanolic and aqueous extracts of fifteen materials of beach-cast macroalgae: valorization of underused waste biomass

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