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2019 Volume 10 Issue 4

Comparative Study of Total Polyphenol and Antioxidant Activity in Different Forms of Al-Kbous Black Tea


Rasha A. Mansouri, Hadeil M. Alsufiani, Gadah A. Alshahrany, Kholoud A. Alyami, Laila M. Alzahrani, Raghad O. Yamani, Ayat M. Shorbaji, Ulfat M. Omar
Abstract

This study aimed to compare total polyphenol content and antioxidant activity of different forms of Al-Kbous black tea: teabag (TB), loose tea (LT), and opened teabag (OTB). Total polyphenol content was assessed by the Folin–Ciocalteu method, and DPPH and FRAP assays were used to determine antioxidant activity. The results revealed that TB and OTB have significantly more polyphenol than LT at the 5- and 15-minute brewing times. In addition, the data indicated that TB and OTB exhibit significantly greater DPPH radical scavenging activity than LT at all brewing times, while the results of the FRAP assay revealed that TB and LT had significantly greater reducing antioxidant power than OTB at all brewing times. In conclusion, the present results revealed that Al-Kbous black TB brewed for 5-20 minutes produces greater quantities of polyphenol and has either a greater or similar antioxidant capacity in comparison to LT. Additionally, the given results showed no effect on total polyphenol content or the radical scavenging activity of tea extract when prepared by opening the teabag.


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J BIOCHEM TECH
J BIOCHEM TECH
Journal of Biochemical Technology is a peer reviewed International Journal published by the Sevas Publishing on behalf of the Biochemical Technology Society, a Registered Charity Organization from India

AREA OF INTEREST
AREA OF INTEREST
Areas of high interest, cover new advances in enzymatic and protein mechanims; applied molecular genetics and biotechnology; genomics and proteomics; metabolic; medical, environmental, food and agro biotechnology.

FOCUS AND SCOPE
FOCUS AND SCOPE
Journal Of Biochemical Technology” Provides A Medium For The Rapid Publication Of Full-Length Articles, Mini-Reviews Of New And Emerging Products And Short Communications On All Aspects Of ...

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This journal provides immediate open access to its content on the principle that making research freely available to the public supports a greater global exchange of knowledge. Keywords include, Biochemical Research: Endo/exocytosis, Trafficking, Membrane Biology, Cell Migration, Cell-Matrix Organelle Biogenesis, Cytoskeleton Proteolysis, Cell Death, Cell Cycle, Cancer, Cell Growth/Death, Differentiation, Drug Targets, Gene Therapy, Models of Disease, Proteomics, Stem Cells, Bioenergetics, Mitochondria, Free Radicals, Redox Signaling, Ion Transport/Channels, Oxidative