Abstract:

In order to finding a scientific cultivation method to get lower heavy metal contents A. auricula, the methods of one-way ANOVA and multiple comparisons were used to analysis the difference significant of the contents of Pb, Cd, Hg and As in 45 fruit bodies of the wild or cultivated A. auricula. The results showed that, the average contents of 45 tested samples were: Pb was 0.15-0.57 mg/kg, Cd was 0.019-0.116 mg/kg, Hg was 0-0.56 mg/kg and As was 0.22-2.1 mg/kg. Except lead, wild jelly ears were significant difference in heavy metal contents. The heavy metal contents of ‘‘tree trunks’’ jelly ears were lower than those cultivated by ‘‘polypropylene bags’’; the method ‘‘tree trunks’’ was better than ‘‘polypropylene bags’’ in this research.