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Chemical composition and antioxidant capacity of the leaf extract of Justicia insularis

Publication Type: Journal article

Journal: Ijps International Journal Of Physical Sciences

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Abstract

The leaves of Justicia insularis have been generating a lot of interest among the Yoruba people in the Southern Nigeria. They provide useful source of human nutrition and medicinal value. In this study, J.insularis leaves were harvested, processed and analysed to determine their chemical compositions and also to investigate their antioxidant properties. The proximate analysis showed that the samplecontained 15.955% ash, 4.48% crude protein, 2.144% lipid and 18.367MJ/kg energy. The contents ofcalcium, potassium, phosphorous and magnesium were 3.30, 1.68, 0.11, and 0.76, respectively, while the amounts of sodium, manganese, iron, copper and zinc were 631.04, 334.02, 4490.08, 6.31 and 49.72mg/g, respectively. The free radical scavenging activity of ethanol extract of J. insularis was determinedby three methods namely: scavenging effect on 2,2-diphenyl-1-picryhydrazyl radical (DPPH), hydroxylradical and peroxide oxidation. Comparison of the results obtained with the three antioxidant standardsused in the assay revealed that the ethanol extract of the plant possessed antioxidant activity. The results obtained revealed high value of iron in the leaf and free radical scavenging properties indicating the presence of primary antioxidants in the plant.

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TALABI,O. Babatunde,O. . (2014). Chemical composition and antioxidant capacity of the leaf extract of Justicia insularis, 9 (), 454-454.

TALABI,O. Babatunde,O. . "Chemical composition and antioxidant capacity of the leaf extract of Justicia insularis" 9, no (), (2014): 454-454.

TALABI,O. and Babatunde,O. and . (2014). Chemical composition and antioxidant capacity of the leaf extract of Justicia insularis, 9 (), pp454-454.

TALABIO, BabatundeO, . Chemical composition and antioxidant capacity of the leaf extract of Justicia insularis. 2014, 9 ():454-454.

TALABI,Olaoluwa , and Babatunde,O. . "Chemical composition and antioxidant capacity of the leaf extract of Justicia insularis", 9 . (2014) : 454-454.

T.Olaoluwa & B.O. , "Chemical composition and antioxidant capacity of the leaf extract of Justicia insularis" vol.9, no., pp. 454-454, 2014.

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