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Table 2 EC50 values obtained in the DPPH assay for authentic samples of tea constituents and the standard antioxidant

From: Extraction Kinetics of phytochemicals and antioxidant activity during black tea (Camellia sinensis L.) brewing

Compound

EC50 for DPPH Assay

Gallic acid

1.38ā€‰Ā±ā€‰0.04Ā Ī¼g/ml

Epicatechin

2.30ā€‰Ā±ā€‰0.06Ā Ī¼g/ml

Epigallocatechin gallate

3.24ā€‰Ā±ā€‰0.07Ā Ī¼g/ml

L-Ascorbic acid

3.30ā€‰Ā±ā€‰0.27Ā Ī¼g/ml

Caffeine

>1.25Ā mg/ml