Phytochemical composition and antioxidant activity of the indigenous watermelon seeds obtained kano state, Nigeria
Bayero AS, Datti Y, Usman LA, Asmau AA, Nura T, Garba AA, Aliyu U, Dikko MA, Zakari AH, Yusuf M
The seeds ofCitrullus lanatus (watermelon) happen to be the most disregarded and discarded seeds after consumption of their fruits. However, recent discoveries have shown that these seeds are by far very beneficial. This study determined the phytochemicals and the antioxidant activity of the seeds of watermelon variety available in Kano State, Nigeria. The phytochemical screening was carried out using standard procedures, while the antioxidant activity was analysed using the DPPH free radical scavenging assay. The results for the phytochemical analysis revealed the presence of alkaloids, carbohydrates, oils and fats, flavonoids, phytosterols, proteins and saponins, while tannins and terpenoids were found to be absent. The DPPH% inhibition was found to be 79.44% inhibition with trolox equivalent of 109.57 µM/g. The present findings suggest that watermelon seeds not only has nutritional value, but may also have many health and economic benefits.