Variation of 17 mineral elements in the aging process of bamboo liquor was studied using ICP-MS. Results showed that the aging process significantly affected the content of mineral elements in bamboo liquor. At the beginning of aging, potassium content increased exponentially, reaching a peak of 330.83 mg/L at 14th day, then gradually decreased, and stabilized at about 190 mg/L after 28th day. The content changes of calcium, sodium, chromium and arsenic followed to the first-order kinetic equation, and the half-lives were 26.05 days, 9.40 days, 9.59 days and 11.92 days, respectively. Exogenous flavonoids affected the variation of mineral elements in bamboo liquor to different degrees. Treatment with 2.5 mg/mL exogenous flavonoids significantly increased the peak value of potassium content, reaching 1 044.90 mg/L at 14th day, which was 3.16 times higher than that without addition. Under the treatment of 10 mg/mL, the potassium content increased fastest and reached the peak at 10th day. Arsenic content raised with the increase of exogenous flavonoids addition, while chromium content showed an opposite trend. Except for cobalt and molybdenum, 15 mineral elements were detected in bamboo liquor, and all the contents met the requirements of relevant food limit standards.
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