From: Effect of altitude and solvent on Psidium guajava Linn. leaves extracts: phytochemical analysis, antioxidant, cytotoxicity and antimicrobial activity against food spoilage microbes
Sample
Concentration (mg/100Â g dry extract)
Fisetin
Quercetin
WGK
1.173 ± 0.09
10.967 ± 1.32
WGB
0.408 ± 0.06
4.478 ± 0.44
WGM
0.543 ± 0.05
0.792 ± 0.26