This study aimed at investigating the effect of some environmental factors on the phenolic
contents of the Rhus cotinus L. plant. Plant samples (leaves, flowers and bark) were
collected from three aspects (south, west and north) at four altitudes (
0-300, 300-600, 600-
900, ˃900m) in the countryside of Jableh in 2016. The fresh samples were extracted using
95% ethanol as an extraction solution, then the total contents of the phenolic compounds
were determined spectrophotometrically using the Folin-Ciocalteu reagent, expressing the
result by (mg gallic acid/1g fw) using a Spectrophotometer.
