Comparative study of nutritional composition, antioxidant activity and functional properties of Cucumis melo and Citrullus lanatus seeds powder

Figures & data

Table 1. Chemical composition and energy value of Citrullus lanatus and Cucumis melo seeds powder

Nutritional Composition (%)	Citrullus lanatus	Cucumis melo
Moisture	7.4 ± 0.05^a	4.7 ± 0.03^b
Ash	2.1 ± 0.03^b	2.2 ± 0.02^a
Crude protein	15.6 ± 0.04^b	20.2 ± 0.06^a
Crude fat	27.4 ± 1.31^b	34.6 ± 1.62^a
Crude fibre	7.8 ± 0.1^b	10.2 ± 0.1^a
Nitrogen-free extract	39.7 ± 1.39^a	28.1 ± 1.01^b
Total dietary fibre	12.7 ± 0.09^b	25.3 ± 0.7^a
Soluble dietary fibre	2.14 ± 0.02^b	3.10 ± 0.03^a
Insoluble dietary fibre	10.8 ± 0.05^b	22.2 ± 0.07^a
Energy value (kCal)	462 ± 12.4^b	510 ± 13.2^a

Different letters (a-b) within the row indicated the interaction of Citrullus lanatus and Cucumis melo are significantly different (p ≤ 0.05). Results are expressed as the mean value ± standard deviation (n = 3).

Table 2. Minerals profile of Citrullus lanatus and Cucumis melo seeds powder

Minerals	Citrullus lanatus (mg/100 g)	Cucumis melo (mg/100 g)
Na	98.6 ± 0.3^a	61.5 ± 0.2^b
Ca	30.8 ± 0.04^b	53.1 ± 0.07^a
K	236.7 ± 4.4^b	309.1 ± 5.3^a
Mg	25.0 ± 0.03^b	57.8 ± 0.15^a
Zn	11.0 ± 0.04^b	24.6 ± 0.05^a

Different letters (a-b) within the row indicated the interaction of Citrullus lanatus and Cucumis melo are significantly different (p ≤ 0.05). Results are expressed as the mean value ± standard deviation (n = 3).

Figure 1. Amino acid profile of melon and watermelon seeds powder.

Table 3. Antioxidant activity of Citrullus lanatus and Cucumis melo seed powder extract

Antioxidant activity	Citrullus lanatus	Cucumis melo
Total phenolic content (mg GAE/100 g)	9.8 ± 0.02^b	11.1 ± 0.03^a
Total flavonoids (mg CE/100 g)	62.0 ± 0.9^b	87.4 ± 1.3^a
FRAP (mg RE/100 g)	18.4 ± 0.05^b	27.8 ± 0.07^a
DPPH (%)	31.2 ± 0.03^b	46.8 ± 0.04^a

Different letters (a-b) within the row indicated the interaction of Citrullus lanatus and Cucumis melo are significantly different (p ≤ 0.05). Results are expressed as the mean value ± standard deviation (n = 3).

Figure 2. Water holding capacity and oil retention capacity of melon and watermelon seeds powder.

Data availability statement

The data that support the findings of this study are available on request from the corresponding author.