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Table 5 LODs, LOQs, Linear range, and Regression equation of fisetin and quercetin

From: Effect of altitude and solvent on Psidium guajava Linn. leaves extracts: phytochemical analysis, antioxidant, cytotoxicity and antimicrobial activity against food spoilage microbes

Standards

LOD (µg/ml)

LOQ (µg/ml)

Linear range (R2)

Regression equation

Fisetin

4.12

12.50

0.9998

y = 184397x − 215,817

Quercetin

1.97

5.99

0.9999

y = 87220x + 213,388