Phenolic compounds (μg/g dw)
Methanolic extract 
Watermelon rinds
Sharlyn melon peels
4-Hydroxybenzoic acid 958.3 325.3 
Vanillin 851.8 199.2 
Chlorogenic acid 196.3 66.2 
Caffeic acid 41.4 – 
Syringic acid 32.3 – 
Coumaric acid 8.8 80.8 
Sinapinic acid 137.6 – 
P-anisic acid 81.5 – 
Hydroxycinnamic acid 46.5 – 
Cinnamic acid 35.5 –