Phenolic profile, antioxidation and anti-proliferation activity of phenolic-rich extracts from Sanghuangporus vaninii

Abstract

In this study, phenolic-rich extracts from Sanghuangporus vaninii (SHE) were prepared, the phenolic profile and main phenolic compound content of SHE were studied by UPLC-Orbitrap-MS, and the antioxidant and antiproliferation activities of SHE were evaluated. The results showed that the total polyphenol content and the total flavonoid content of SHE were 42.420 ± 0.011 mg GAE/g EW and 8.504 ± 0.205 mg RE/g EW, respectively. Moreover, 14 phenolic acids and 8 flavonoids in SHE were identified, among which, the major polyphenols were protocatechualdehyde (394.68 μg/g), protocatechuic acid (196.88 μg/g), caffeic acid (96.11 μg/g), L-phenylalanine (12.72 μg/g) and (+)-taxifolin (8.59 μg/g). SHE showed strong radical scavenging, anti-lipid peroxidation and anti-DNA damage capacity in vitro. SHE could effectively induce HepG2 cell apoptosis via the caspases-dependent mitochondrial apoptotic pathway and arrest the cell cycle in the G0/G1 phase. The present study suggested that S. vaninii could be a valuable source of natural antioxidative and antiproliferative ingredients.

Keywords

• Sanghuangporus vaninii
• Phenolic profile
• Polyphenols
• Antioxidative activity
• Antiproliferative activity