Phenolic Standard

Retention Time (Minutes)

Standard

HSE

Gallic acid

2.56

1.42

Protocatechuic acid

2.99

2.70

Chlorogenic acid

5.28

4.97

Catechin hydrate

5.60

8.38

EGCG

6.54

10.28

Caffeic acid

7.94

11.83

p-Coumaric

10.51

13.81

Salicyclic acid

11.24

16.64

Ferulic acid

12.20

20.93

Naringenin

17.73

Rutin

18.51

Quercetin

23.15