If the element in your oven breaks and you notice a white powder, it is likely to be a residue of a material used in the construction of the element itself. The white powder is often a combination of oxides, such as magnesium oxide or aluminum oxide, which are used as insulation materials.
While the exact composition of the powder may vary depending on the specific oven and element design, these oxides are generally considered safe and non-toxic. They are commonly used in high-temperature applications and are unlikely to pose a significant health risk if consumed in small amounts.
However, it is still advisable to exercise caution and not consume food that has been directly exposed to the white powder. Even though the powder itself may not be harmful, it is possible that other contaminants or debris from the broken element could have mixed with it. Ingesting such contaminants could potentially be hazardous to your health.
To ensure food safety, it is best to discard any food that has been in direct contact with the white powder or debris from the broken element. Clean the oven thoroughly to remove any remaining residue, and consider contacting a professional to repair or replace the broken element to prevent any further issues.