The researchers found that cadmium in cocoa beans naturally comes from the soil and is directly transported to the beans by the cocoa tree. Lead contamination occurs post-harvest, when wet cocoa beans are exposed to soil and dust during the drying, fermenting and transport phases.
Where are the heavy metals coming from?
I went to google for the answer:
The researchers found that cadmium in cocoa beans naturally comes from the soil and is directly transported to the beans by the cocoa tree. Lead contamination occurs post-harvest, when wet cocoa beans are exposed to soil and dust during the drying, fermenting and transport phases.