Abstract:

High-pressure sealed nitrifying pots were used to nitrify samples. Totally 20 kinds of mineral elements including Na, K, Ca, Mg, Zn, Fe, Sr, Cu, Co, Mn, Ge, Se, Sn, Ba, Al, Pb, Hg, As, Cr and Cd in passiflora fruit juice, peel and seeds were determined by inductively coupled plasma emission spectroscopy (ICP-ES). Experimental conditions were optimized through orthogonal experiments and their variance analysis. The recovery rate of this method was in the range of 95.0%－104.0%, and relative standard deviations were less than 2.15%. Experimental results indicated that mineral elements such as Na, K, Ca, Mg, Zn, Fe and Ge were rich in passiflora fruit juice, peel and seeds, which were helpful for human health. In contrast, harmful elements were not detected. Therefore, passiflora fruits are natural fruits with high nutritional value and have promising for industrial development.

Key words: passiflora fruit, mineral elements, ICP-ES