Abstract Detail


Perdomo, Rosemary  [1], Yerima, Fadel  [1], Priano, Christine [1], Koroch, Adolfina [2].

Potential Antioxidant Capacity and Antibacterial Effect of Xylopia aethiopica Plant Extracts.

Xylopia aethiopica (Annonaceae) is a spice that grows in many countries on the African continent and is locally known as guinea pepper, grains of selim, hwentia, and uda. Its dried fruits are used as a flavoring for soups and in decoctions as analgesics and anti-inflammatories, as well as for treatment of infections. These medicinal properties of the fruits are associated with their chemical composition, such as phenolics. The purpose of this study was to measure the total phenolic and flavonoid content and to determine the potential antioxidant capacity and antibacterial activity of commercial samples of Xylopia grown in Ghana. The dried fruit samples were pulverized and phenolic compounds (Folin-Ciocalteu assay) and flavonoid content (aluminum chloride method) were extracted using various solvents. High amounts of these compounds were extracted with decoctions of distilled water. Antioxidant capacity was assessed using 2,2'-azino-bis (ABTS) and 2,2-diphenyl-1-picrylhydrazyl (DPPH) assays. Variation in antioxidant capacity between different samples and between different extraction solvents were observed. Samples with high total phenolic and flavonoid content exhibited the highest antioxidant capacity. There was a significant correlation between antioxidant capacity and total phenolics and flavonoid content, suggesting that flavonoids are partially responsible for the antioxidant capacity. To determine antibacterial properties, liquid cultures of Escherichia coli and Bacillus subtilis were each grown in either the presence or absence of the Xylopia extract and bacterial growth was monitored by spectrophotometry. Results demonstrated that whereas growth of E. coli was slightly suppressed in the presence of the extract, growth of B. subtilis was completely inhibited. It was concluded differential antibacterial activity of the aqueous Xylopia fruit extract exerted on these strains was possibly due to their differences in cell wall structure. This study shows the potential health benefits of Xylopia and supports its traditional preparation in soups and teas.

1 - Borough of Manhattan Community College- CUNY, 199 Chambers St, New York, NY, 10007-1044, United States
2 - Borough Of Manhattan Community College- CUNY, 199 Chambers St, 315 Wayne St, New Jersey, NJ, 08904, United States

none specified

Presentation Type: Poster
Session: P, Ethnobotany Posters
Location: Virtual/Virtual
Date: Tuesday, July 28th, 2020
Time: 5:00 PM Time and date to be determined
Number: PET001
Abstract ID:502
Candidate for Awards:None

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