Determination of elemental phenolic antioxidant and flavonoid properties of Lemon grass (Cymbopogon citratus Stapf)

Godwin A, . and Godsway B, . and Isaak K. B., . and Sackitey N. O, . and Nana Afua K. A-B, . and Shadrack D, . and Daniel G. A, . and Wisdom A., . and Joseph K. G, . and Elom S. A, . Determination of elemental phenolic antioxidant and flavonoid properties of Lemon grass (Cymbopogon citratus Stapf). pp. 1971-1979. ISSN 22317546

Commonly consumed Ghanaian lemon grass for tea making were analysed for contents of Potassium (K) Chlorine (Cl) Calcium (Ca) Magnesium (Mg) Manganese (Mn) Aluminium (Al) Copper (Cu) and Sodium (Na) across five locations using Instrumental Neutron Activation Analysis in addition to total phenolic antioxidant and flavonoid activities using standard methods. Potassium was the most abundance element and Cu was the least. Concentrations of these eight elements differed from location to location. Total phenolic activity in cold and hot percolations ranged from 1.3 to 4.7 mg and 2.6 to 7.3 mg of garlic acid equivalents (GAE)/g dw respectively; total antioxidant activity in cold and hot percolations ranged from 65.4 to 81.3 and 65.4 to 81.3 respectively; and total flavonoid concentration ranged from 6.9 to 11.3 g/g Quercetin Equivalent (QE) and 6.9 to 12.9 g/g QE dry weight basis for cold and hot percolations respectively. The temperature of percolations therefore had pronounced effect on total phenol antioxidant and flavonoid activities which underscores the importance of boiling of lemongrass herbal teas to allow both simple and complex phenols to percolate faster and provide more antioxidant activities.

Full text available from: Official URL: http://ifrj.upm.edu.my/21%20(05)%202014/36%20IFRJ%...

Abstract

Commonly consumed Ghanaian lemon grass for tea making were analysed for contents of Potassium (K) Chlorine (Cl) Calcium (Ca) Magnesium (Mg) Manganese (Mn) Aluminium (Al) Copper (Cu) and Sodium (Na) across five locations using Instrumental Neutron Activation Analysis in addition to total phenolic antioxidant and flavonoid activities using standard methods. Potassium was the most abundance element and Cu was the least. Concentrations of these eight elements differed from location to location. Total phenolic activity in cold and hot percolations ranged from 1.3 to 4.7 mg and 2.6 to 7.3 mg of garlic acid equivalents (GAE)/g dw respectively; total antioxidant activity in cold and hot percolations ranged from 65.4 to 81.3 and 65.4 to 81.3 respectively; and total flavonoid concentration ranged from 6.9 to 11.3 g/g Quercetin Equivalent (QE) and 6.9 to 12.9 g/g QE dry weight basis for cold and hot percolations respectively. The temperature of percolations therefore had pronounced effect on total phenol antioxidant and flavonoid activities which underscores the importance of boiling of lemongrass herbal teas to allow both simple and complex phenols to percolate faster and provide more antioxidant activities.

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Item Type:	Article
AGROVOC Term:	Phenolic content
AGROVOC Term:	Antioxidants
AGROVOC Term:	Flavonoids
AGROVOC Term:	Lemon grass
AGROVOC Term:	Cymbopogon citratus
AGROVOC Term:	Potassium
AGROVOC Term:	Chlorine
AGROVOC Term:	Calcium
AGROVOC Term:	Magnesium
AGROVOC Term:	Manganese
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 06:27
URI:	http://webagris.upm.edu.my/id/eprint/21714

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