Antioxidant and Antimicrobial Attributes and Phenolics of Different Solvent Extracts from Leaves, Flowers and Bark of Gold Mohar Delonix regia Bojer ex Hook. Raf.Reportar como inadecuado




Antioxidant and Antimicrobial Attributes and Phenolics of Different Solvent Extracts from Leaves, Flowers and Bark of Gold Mohar Delonix regia Bojer ex Hook. Raf. - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

1

Department of Chemistry and Biochemistry, University of Agriculture, Faisalabad 38040, Pakistan

2

Environmental Biotechnology Division, National Institute for Biotechnology and Genetic Engineering NIBGE, P.O.Box 577, Jhang Road, Faisalabad, Pakistan

3

Institute of Tropical Agriculture, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor Malaysia





*

Authors to whom correspondence should be addressed.



Abstract This paper describes the antioxidant and antimicrobial activities and phenolic components of different solvent absolute methanol, absolute ethanol, absolute acetone, 80% methanol, 80% ethanol, 80% acetone and deionized water extracts of leaves, flowers and bark of Gold Mohar Delonix regia Bojer ex Hook. Raf

The extract yields from leaves, flowers and bark ranged from 10.19 to 36.24, 12.97 to 48.47 and 4.22 to 8.48 g-100 g dry weight DW, respectively. Overall, 80% methanol extract produced from the leaves exhibited significantly P 0.05 higher antioxidant activity, with high phenolic contents 3.63 g GAE-100 g DW, total flavonoid contents 1.19 g CE-100 g DW, inhibition of peroxidation 85.54%, DPPH scavenging capacity IC50 value 8.89 μg-mL and reducing power 1.87. Similarly, this 80% methanol leaves extract also showed superior antimicrobial activity. HPLC analysis of the 80% methanol extracts for individual phenolics revealed the presence of gallic, protocatechuic and salicylic acid in leaves; gallic, protocatechuic, salicylic, trans-cinnamic and chlorogenic acid in flowers, and gallic acid in bark as the main amount 1.50 mg-100 g DW phenolic acids. Besides, small amounts 1.50 mg-100 g DW of some other phenolic acids such as sorbic, sinapic, p-coumaric, m-coumaric, ferulic, caffeic, 3-hydroxybenzoic, 4-hydroxycinnamic and 4-hydroxybenzoic acids were also detected. The extracts of the tested parts of Gold Mohar, especially, the leaves, might be valuable for functional food and therapeutic applications.

Keywords: Delonix regia; solvent extracts; total phenolics; antioxidant activities; antimicrobial activities Delonix regia; solvent extracts; total phenolics; antioxidant activities; antimicrobial activities





Autor: Ghulam Shabir 1,2, Farooq Anwar 1,* , Bushra Sultana 1, Zafar M. Khalid 2, Muhammad Afzal 2, Qaiser M. Khan 2 and M. Ashrafuzzaman 3,*

Fuente: http://mdpi.com/



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