Comparison of antioxidant activity in tea drinks using FRAP Assay / Sharifah Nor Hafizai Syed Jaya …[et al.]

Syed Jaya, Sharifah Nor Hafizai and Mohd Jan, Sarah Laila and Mohd Khazaai, Siti Norhafiza and Zakaria, Siti Raihan and Mat Hussin, Zurhana (2013) Comparison of antioxidant activity in tea drinks using FRAP Assay / Sharifah Nor Hafizai Syed Jaya …[et al.]. In: Prosiding KONAKA Konferensi Akademik 2013, 28-29 Oktober 2013, Bukit Gambang Resort City, Gambang, Pahang, Malaysia.

Abstract

Dangerous effects of free radicals and oxidative stress can be reduced by consistently taking food that
produce antioxidant such as flavonoid and other polyphenol compounds. Hence this research was conducted
in order to determine the antioxidant activity in tea drink served with sugar or milk as it was a routine drink
for some people and cultures. The characterization was done using Attenuated Total Reflectance - Fourier
Transform Infrared (ATR-FTIR) spectrometer to identify the antioxidant's presence in tea and antioxidant
activity determination were carried out using Ferric Reducing Antioxidant Power (FRAP) assay. ATR-FTIR
Spectrum shown the presence of varied numbers of hydroxyl group in several arrangements due to different
polyphenols contained in tea powder has distinctive antioxidative properties. The estimation of antioxidant
activity was done by using Ultraviolet Visible (UV- VIS) Spectrometer shown that black tea with addition of
milk and sugar (BMS) contained the highest antioxidant activity which is 0.467 ug/L compared with black
tea (B) and black tea with milk (BM) samples. It is proved that the addition of milk and sugar do not alter the
antioxidant activity in tea samples.

Metadata

Item Type: Conference or Workshop Item (Paper)
Creators:
Creators
Email / ID Num.
Syed Jaya, Sharifah Nor Hafizai
sarieyosh@yahoo.com
Mohd Jan, Sarah Laila
sarahlaila@pahang.uitm.edu.my
Mohd Khazaai, Siti Norhafiza
ctnorhafiza@pahang.uitm.edu.my
Zakaria, Siti Raihan
sitiraihan@pahang.uitm.edu.my
Mat Hussin, Zurhana
zurhana_mhussin@pahang.uitm.edu.my
Subjects: Q Science > QD Chemistry > Physical and theoretical chemistry > Free radicals (Chemistry)
Q Science > QD Chemistry > Extraction (Chemistry)
Q Science > QD Chemistry > Analytical chemistry
Divisions: Universiti Teknologi MARA, Pahang > Jengka Campus
Event Title: Prosiding KONAKA Konferensi Akademik 2013
Event Dates: 28-29 Oktober 2013
Page Range: pp. 175-180
Keywords: Black tea, Antioxidant, Polyphenol, FRAP Assay
Date: 2013
URI: https://ir.uitm.edu.my/id/eprint/39915
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