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Parkia Speciosa Essay

1110 Words5 Pages

Parkia speciosa Hassk., or stink bean, a plant found in abundance in tropical regions like Malaysia, Thailand, Indonesia and Philippines (A.J.S.J Samuel et al., 2010 ; P. Rozaq & N. Sofriani, 2009). It is a potential phytomedicine in the future as it is known to have many potential properties such as antimicrobial, antioxidant, hypoglycaemic, antitumor and antiangiogenic properties (Yusof K., Faizah O. Saad Q. & Kamsiah J., 2013). In our study, we focused on antimicrobial properties.
Based on our experiment results, there were no antimicrobial activities shown by ethanol extract of P.speciosa seed against Escherichia coli, Pseudomonas aeruginosa and Staphylococcus aureus bacteria.
The basic parameters influencing the quality of an extract are, …show more content…

We only used the seeds in our experiment. Based on the previous study done by S. Wonghirundecha, S. Benjakul & P. Sumpavapol in 2014, it was revealed that the extract of P.speciosa seed had antimicrobial activities against Escherichia coli and Helicobacter pylori. Besides the seeds, the pod showed antimicrobial activities against food-borne pathogenic bacteria for example Bacillus cereus, Listeria monocytogenes, Staphylococcus aureus, Escherichia coli, Salmonella thyphimurium and Vibrio cholerae. It also demonstrated antimicrobial activities against food spoilage bacteria for example Aeromonas hydrophila, Pseudomonas aeruginosa and Serratia …show more content…

Sakunpak & P. Panichayupakaranant, 2012; Hashim, D.N. Faridah & D.A. Kurniawati, 2015). However, the solvents used were different from what we were using. The study done by Hashim, D.N. Faridah & D.A. Kurniawati revealed that P.speciosa seed extract with ethyl acetate as the solvent had inhibitory ability greater than streptomycin against both Escherichia coli and Staphylococcus aureus. Seed extract from n-hexane also showed some inhibitory ability but not as high as ethyl acetate seed extract while ethanol seed extract were shown to have no inhibitory ability against both of the bacteria. Our experiment was done using ethanol as solvent and dimethyl sulfoxide (DMSO) solvent for preparation of stock solution. DMSO is favoured as the standard solvent for the stock solutions because of better ability in dissolving, low chemical reactivity and low vapour pressure (A. Tjernberg et al., 2006). Seed extract that used petroleum ether, chloroform and methanol as solvents showed the presence of antimicrobial activity against Helicobacter pylori (A.M. Uyub, I.N. Nwachukwu, A.A. Azlan & S.S. Fariza,

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