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Cultivo Controlado e Avaliação do Potencial Bioativo da Medusa Chrysaora chesapeakei sob Diferentes Condições de Salinidade
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Este trabalho teve como objetivo avaliar o potencial biotecnológico da medusa Chrysaora
chesapeakei, com foco na produção de compostos bioativos, nomeadamente com
atividade antioxidante, antimicrobiana e enzimática (lisozima), sob diferentes condições de
salinidade. Paralelamente, foi explorado o cultivo controlado da espécie como estratégia
sustentável para a produção e valorização da sua biomassa.
O estudo foi conduzido em sistema de aquacultura com recirculação, onde as medusas
foram submetidas a três condições experimentais: salinidade de referência, stress salino e
fase de recuperação. Foram analisadas as diferentes estruturas corporais (campânula e
braços orais) e o muco, sendo preparados extratos para avaliação da atividade antioxidante
através dos ensaios DPPH e FRAP, bem como da atividade antimicrobiana e da atividade
da lisozima.
Os resultados demonstraram que a salinidade influencia significativamente o
desempenho fisiológico e a produção de biomassa, verificando-se um aumento geral da
biomassa fresca ao longo dos ensaios experimentais. A biomassa seca apresentou
respostas diferenciadas entre tecidos, sugerindo uma redistribuição de recursos em reação
ao stress osmótico. Adicionalmente, foram observadas variações na atividade bioativa dos
extratos, indicando que fatores ambientais, como a salinidade, podem modular a produção
de compostos com interesse biotecnológico.
Os resultados obtidos reforçam o interesse de Chrysaora chesapeakei como recurso
promissor no âmbito da biotecnologia marinha. A influência das condições ambientais na
modulação das respostas fisiológicas e na produção de compostos bioativos evidencia a
relevância da otimização de parâmetros de cultivo. Assim, o desenvolvimento de
estratégias de aquacultura surge como uma abordagem fundamental para maximizar o
aproveitamento sustentável desta espécie, potenciando a sua aplicação em diferentes
setores industriais, nomeadamente nas áreas farmacêutica, alimentar e cosmética.
The objective of this study was to evaluate the biotechnological potential of the jellyfish Chrysaora chesapeakei, with a focus on the production of bioactive compounds, specifically those with antioxidant, antimicrobial, and enzymatic (lysozyme) activity, under different salinity conditions. Concurrently, the controlled cultivation of the species was explored as a sustainable strategy for the production and utilization of its biomass. The study was conducted in a recirculating aquaculture system, where the jellyfish were subjected to three experimental conditions: reference salinity, salinity stress, and recovery phase. Different body compartments (bell, oral arms, and mucus) were analyzed, and extracts were prepared to assess antioxidant activity using the DPPH and FRAP assays, as well as antimicrobial activity and lysozyme activity. The results demonstrated that salinity significantly influences physiological performance and biomass production, with a general increase in fresh biomass observed across the experimental assays. Dry biomass showed varying responses among tissues, suggesting a redistribution of resources in response to osmotic stress. Additionally, variations in the bioactive activity of the extracts were observed, indicating that environmental factors, such as salinity, can modulate the production of compounds of biotechnological interest. The results obtained reinforce the interest in Chrysaora chesapeakei as a promising resource in the field of marine biotechnology. The influence of environmental conditions on the modulation of physiological responses and the production of bioactive compounds highlights the importance of optimizing culture parameters. Thus, the development of aquaculture strategies emerges as a fundamental approach to maximize the sustainable use of this species, enhancing its application in various industrial sectors, particularly in the pharmaceutical, food, and cosmetic industries.
The objective of this study was to evaluate the biotechnological potential of the jellyfish Chrysaora chesapeakei, with a focus on the production of bioactive compounds, specifically those with antioxidant, antimicrobial, and enzymatic (lysozyme) activity, under different salinity conditions. Concurrently, the controlled cultivation of the species was explored as a sustainable strategy for the production and utilization of its biomass. The study was conducted in a recirculating aquaculture system, where the jellyfish were subjected to three experimental conditions: reference salinity, salinity stress, and recovery phase. Different body compartments (bell, oral arms, and mucus) were analyzed, and extracts were prepared to assess antioxidant activity using the DPPH and FRAP assays, as well as antimicrobial activity and lysozyme activity. The results demonstrated that salinity significantly influences physiological performance and biomass production, with a general increase in fresh biomass observed across the experimental assays. Dry biomass showed varying responses among tissues, suggesting a redistribution of resources in response to osmotic stress. Additionally, variations in the bioactive activity of the extracts were observed, indicating that environmental factors, such as salinity, can modulate the production of compounds of biotechnological interest. The results obtained reinforce the interest in Chrysaora chesapeakei as a promising resource in the field of marine biotechnology. The influence of environmental conditions on the modulation of physiological responses and the production of bioactive compounds highlights the importance of optimizing culture parameters. Thus, the development of aquaculture strategies emerges as a fundamental approach to maximize the sustainable use of this species, enhancing its application in various industrial sectors, particularly in the pharmaceutical, food, and cosmetic industries.
Descrição
Palavras-chave
Biotecnologia marinha Chrysaora chesapeakei Stress osmótico Compostos bioativos Atividade antioxidante Atividade antimicrobiana