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Updated: Sep 26, 2025

Early Viral Entry Assays for the Identification and Evaluation of Antiviral Compounds
Published on: October 29, 2015
The direct and indirect effects of bioactive compounds against coronavirus
Merve Tomas1, Esra Capanoglu2, Akbar Bahrami3
1Department of Food Engineering Faculty of Engineering and Natural Sciences Istanbul Sabahattin Zaim University Halkali Istanbul Turkey.
Abstract:
Emerging viruses are known to pose a threat to humans in the world. COVID-19, a newly emerging viral respiratory disease, can spread quickly from people to people via respiratory droplets, cough, sneeze, or exhale. Up to now, there are no specific therapies found for the treatment of COVID-19. In this sense, the rising demand for effective antiviral drugs is stressed. The main goal of the present study is to cover the current literature about bioactive compounds (e.g., polyphenols, glucosinolates, carotenoids, minerals, vitamins, oligosaccharides, bioactive peptides, essential oils, and probiotics) with potential efficiency against COVID-19, showing antiviral activities via the inhibition of coronavirus entry into the host cell, coronavirus enzymes, as well as the virus replication in human cells. In turn, these compounds can boost the immune system, helping fight against COVID-19. Overall, it can be concluded that bioactives and the functional foods containing these compounds can be natural alternatives for boosting the immune system and defeating coronavirus.
Insights
Natural bioactive compounds show promise in fighting COVID-19 by inhibiting viral entry and replication. These compounds also boost the immune system, offering a potential alternative to traditional therapies for coronavirus infections.
Area of Science:
- Nutritional Immunology
- Virology
- Pharmacology
Background:
- Emerging viral diseases like COVID-19 (Coronavirus Disease 2019) present a significant global health threat.
- Rapid person-to-person transmission occurs via respiratory droplets, with no specific antiviral therapies currently available.
- There is an urgent need for effective antiviral strategies to combat COVID-19.
Purpose of the Study:
- To review existing literature on bioactive compounds with potential antiviral activity against COVID-19.
- To explore mechanisms of action, including inhibition of viral entry, enzymes, and replication.
- To assess the role of these compounds in immune system modulation.
Main Methods:
- Literature review of scientific databases.
- Analysis of studies on bioactive compounds such as polyphenols, glucosinolates, carotenoids, minerals, vitamins, oligosaccharides, bioactive peptides, essential oils, and probiotics.
- Evaluation of reported antiviral mechanisms and immunomodulatory effects.
Main Results:
- Various bioactive compounds demonstrate potential to inhibit coronavirus entry into host cells.
- Certain compounds show efficacy in inhibiting key viral enzymes and replication processes.
- Bioactive compounds can enhance the host immune system's response against the virus.
Conclusions:
- Bioactive compounds found in functional foods offer a natural approach to combating COVID-19.
- These compounds can serve as complementary strategies for immune support and viral inhibition.
- Further research into functional foods and their bioactive constituents is warranted for infectious disease management.
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