https://www.selleckchem.com/pr....oducts/tdi-011536.ht
Methanol extract of the flowering aerial parts of Hypericum sinaicum Boiss. (ME) growing in Saint Catherine Protectorate (SKP), Egypt was analysed for its phenolic compounds profiling using HPLC and colorimetric methods. The total phenol content of ME was 158.60 ± 0.74 (μg GAE/mg D.E.), while the total flavonoid content was 70.91 ± 0.01 (μg QE/mg D.E.). HPLC analysis revealed that the highest flavonoid was naringenin (50.31 mg/g), while the highest phenolic acid was syringic acid (0.37 mg/g). The scavenging activity of ME was evaluat