Phytochemical Characterization and Biological Evaluation of Ribes nigrum Leaf Extracts: A Study of Aqueous and Butanolic Fractions

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Oana-Adla Coman
Andreea Smeu
Alina Moacă
Delia Muntean
Ana-Maria Vlase
Laurian Vlase
Szilvia Toth
Andreea Vădan
Anca Stoica
Sergio Liga
Diana-Simona Tchiakpe-Antal

Abstract

Background: Ribes nigrum (black currants) are recognized for their outstanding biological properties, including antioxidant, anti-inflammatory, and anticancer activities. Colorectal cancer (CRC) is a type of cancer with a high mortality, for which various natural products have been investigated as alternatives that have emerged as potential candidates in the oncological domain. Methods: The present work involved the development of two types of Ribes nigrum leaves extracts (in aqueous and butanolic fractions), which were evaluated by the HPLC method and subsequently assessed for the antioxidant capacity, the antimicrobial activity, and in vitro cytotoxicity on the DLD-1 cell line. Results: The results indicated that both types of extracts contain amounts of polyphenols, the antioxidant activity of the extracts supports their potential as natural sources of free radical scavengers, antimicrobial evaluation showed that the extract in aqueous fraction produced a selective antimicrobial effect on gram-positive bacteria, and the MTT assay suggested that the extracts produced a dose-dependent cytotoxicity, with a superior effect noted for the extract in the butanolic fraction. Conclusion: These findings emphasized the biological potential of Ribes nigrum extracts due to their versatile composition and opened new research directions regarding their anticancer potential in CRC.

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