Green antibacterial approach: Ultrasound-enhanced date seed (Phoenix dactylifera L.) extracts against Escherichia coli

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Research Paper 05/07/2024
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Green antibacterial approach: Ultrasound-enhanced date seed (Phoenix dactylifera L.) extracts against Escherichia coli

Alanood A. Alfaleh, Marya J. Hamdan, Abdullatif A. Neamatallah, Nagwa T. Elsharawy
Int. J. Biosci.25( 1), 138-146, July 2024.
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Abstract

Natural Deep Eutectic Solvents (NADES) are novel greener and sustainable solvents that enhance phenolic compound extraction from different plant sources. The study aims to extract date seeds using three natural solvents and ultrasound and test the antibacterial effect of date seeds extracts against Escherichia coli bacteria by using “the well diffusion” method to measure the zone of inhibition (ZOI). The results show that the date seeds extracted with NADES such as; lactic and citric acids significantly exhibited the highest ZOI values (40.5 ± 0.71 and 36.0 ± 2.83 mm, respectively) (p < 0.05) compared to the standard antibiotic Ciprofloxacin (29.5 ± 0.71 mm) and other date seeds extracts. Also, it found that each date seeds extract significantly exhibited (p < 0.05) higher ZOI values than its extracted solvent. The study recommends that the extraction process enhance the antibacterial properties of the extracts. These findings noted that NADES containing carboxylic acids have the potential to extract polyphenols from date seeds with notable antibacterial activities. NADES can be utilized in various industries such as food and pharmaceuticals as environmentally friendly solvents.

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