Abstract: Longyao jitui onion and Laiwu jitui onion are geographical indication products. In order to explore the mineral content in Longyao jitui onion. Analysis of mineral element content of Laiwu jitui onion as control and Longyao chicken leg onion. The content of K, Ca, Na, Mg, Cu, Fe, Mn, Zn in geographical indication products Longyao jitui onion, Laiwu jitui onion and their corresponding soil were analyzed by flame atomic absorption spectrometry. The results showed that the content of essential mineral elements(Ca, K, Mg, etc.)in Longyao jitui onion was significantly higher than that in Laiwu jitui onion. The standard curves of 8 kinds of mineral elements show good linear correlation, with correlation coefficient R² >0.997 8. The precision is 0.90%—3.61%, and the recovery is 88.86%—105.56%.There is a significant correlation between 8 mineral elements in Longyao jitui onion and the corresponding soil mineral elements. There is a significant positive correlation between the content of Ca, Mg, Fe, Cu and the corresponding elements in Longyao jitui onion. The results of this study will provide a scientific basis for the cultivation of Longyao jitui onion.

Key words: geographical indication products, longyao jitui onion, mineral elements, correlation analysis