Table 1 Product composition of the flavonoid-rich black tea extract and of beetroot juice

Protein (g)

0.01

2.5

Carbohydrates (g)

0.03

16

Fat (g)

ND

<0.1

Fibre (g)

ND

<0.5

Sodium (mg)

ND

<100

Nitrate (mg)

ND

300

Total Polyphenol (Folin Ciocalteu) (mg)

228.1

68.4

consisting of: (-)-Epicatechin (mg)

2.3

  (-)-Epigallocatechin (mg)

1.1

  (-)-Epigallocatechin gallate (mg)

6.2

  (-)-Epicatechin gallate (mg)

5.0

  Theaflavins (mg)

2.3

  Gallic acid (mg)

3.9

  Flavonol-glycosides (mg)

2.3

  Thearubigins^a (mg)

161.9

Caffeine (mg)

37.1

ND