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Table 3 Correlations between TPC with antioxidant and cytoprotective (CP) activities

From: Antioxidant and cytoprotective activities of Piper betle, Areca catechu, Uncaria gambir and betel quid with and without calcium hydroxide

Assay

TPC vs 1/DPPH

TPC vs FRAP

TPC vs FTC

TPC vs CP

r value

0.972

0.981

-0.951

0.682

p value

< 0.01

< 0.01

< 0.01

0.005