Materials and methods
Materials
Raw materials
Fruits used in this study were obtained from local market in Cairo, Egypt. Waste materials used were namely watermelon (C. lanatus) rinds(WMR) and sharlyn melon (Cucumis melo) peels (SMP).
Cake ingredients
Sucrose (commercial grade), fat (palm oil), fresh whole egg, baking powder (sodium bicarbonate and cream of tartar), dry milk powder and vanillia (pure vanillia) were purchased from local market. Soft wheat flour (72% extraction) was obtained from the Cairo south Company of milling (EL-Haram Milling).