Proximate and Elemental Analysis of Dried Watermelon (citrullus lanatus) Seeds

Suwaibatu Mamman,Ogbe Suleiman Musa,Abubakar Chadi Sadiq,Usman Saidu, and 1Obaje Daniel Opaluwa

Keywords: elemental, nutrient, proximate, seeds, watermelon


Watermelon (Citrullus lanatus) is an important vegetable crop worldwide. Its flesh is a source of carotenoids, Vitamins A, B6, C, lycopene, and antioxidants. In some African countries, watermelon seeds are roasted, salted, and eaten as snacks. Considering the large consumption of watermelon and its seeds, chemical analyses are necessary to ascertain its use as beloved fruit and explore its potentials. The proximate and mineral compositions of Citrullus lanatus seeds were determined using standard analytical procedures. The proximate analysis of the seed showed mean values of 8.39±0.01 %, ash content of 2.86±0.01 % crude lipid of 31.84±0.02 %, crude fibre of 34.64±0.01 %, crude protein of 15.23±0. 02 % and Carbohydrate of 7.03-0. 01%. The mineral analysis (mg/100g) of the seed was analyzed using atomic absorption spectrophotometer (AAS GBC Avanta Ver 2.02 Model, Australia) equipped with an air-acetylene flame. The result revealed the values of 19.00 ±0.02 iron (Fe), 7.00±0.01 zinc (Zn), 52.00±0.01 magnesium (Mg), 5.00±0.01 (Mn), and 4.00±0.02 copper (Cu). This study concludes that watermelon seed is an important source of minerals, proteins, and energy. Therefore, it is recommended that the seed should be chewed with the flesh and not thrown away as it could serve as a good source of nutrients and minerals to the body. Also, it can be used as a supplement for bone and teeth strengthening as well as a potential ingredient in cosmetics for stimulation and revitalization.