Research Article

Binary Solvent Extraction System and Extraction Time Effects on Phenolic Antioxidants from Kenaf Seeds (Hibiscus cannabinus L.) Extracted by a Pulsed Ultrasonic-Assisted Extraction

Table 2

Phenolic compounds in kenaf seed extract extracted by 80% ethanol for 15 min.

Phenolic compoundsConcentration (mg/100 g)

Gallic acid
Tannic acid
Catechin hydrate
4-Hydroxybenzaldehyde
4-Hydroxybenzoic acid
Syringic acid
Sinapic acid
Ferulic acid
Naringin
Protocatechuic acid

Total5880.56

Value are presented in means ± standard deviation .