Phytochemical screening and antioxidant activity of Psidium guajava

Jani, Nor Akmalazura and Ahmad Azizi, Nurul Alia and Aminudin, Nurul Iman (2018) Phytochemical screening and antioxidant activity of Psidium guajava. In: International Conference of Analytical Sciences (SKAM31), 17th-19th August 2018, Vistana Hotel, Kuantan, Pahang. (Unpublished)

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Abstract

Psidium guajava or commonly known as guava is useful to treat gastroenteritis, dysentery, stomach pain and indigestion. The leaves of P. guajava was screened for phytochemical and antioxidant activity. The phytochemicals were extracted by sequential maceration using n-hexane, chloroform and methanol, while phytochemical screening was performed using various chemical tests. Antioxidant activity was assessed by 2,2-diphenyl-1-picrylhydrazyl (DPPH) assay. Steroids and terpenoids were present in the n-hexane extract, while phenols and terpenoids were detected in the chloroform extract. The methanol extract was found to contain flavonoids, steroids, saponins, phenols and terpenoids. Among the tested extracts, the methanolic extract demonstrated strong DPPH radical scavenging activity with an IC50 value of 51.07 µg/mL.

Item Type:	Conference or Workshop Item (Poster)
Additional Information:	69566/8125
Uncontrolled Keywords:	Phytochemical, antioxidant,Psidium guajava
Subjects:	Q Science > QD Chemistry
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Science
Depositing User:	Dr Nurul Iman Aminudin
Date Deposited:	30 Jan 2019 12:33
Last Modified:	30 Jan 2019 12:33
URI:	http://irep.iium.edu.my/id/eprint/69566

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