BreadTalk said the aluminium in the Hong Kong muffins came from an employee accidentally adding too much baking powder, which can contain the metal. "It is an isolated incident due to staff inadvertence where a higher-than-stipulated amount of baking powder was used in the production," it said in a statement. "This... resulted in the high level of aluminium content found in the said raisin muffin."
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According to a report in Hong Kong's Apple Daily, the raisin muffins sold at BreadTalk outlets in Hong Kong contain a high amount of aluminium.
Apple Daily asked an independent research facility to test 10 different types of confectionery sold at different stores.
Each muffin weighing about 90g each was found to contain about 27mg of aluminium.
According to the report, a person weighing about 50kg person should not consume more than 100mg of the metal in a week.
This means that eating four muffins in a week would easily bust the consumption limit.
Apple Daily reported that aluminium is not easily absorbed by the body and will usually be expelled. But over-consumption can lead to problems with liver and brain function, and is especially detrimental to children.
The publication added that aluminium usually comes from the addition of baking powder in the baking process, which Hong Kong authorities do not regulate.
BreadTalk told Apple Daily that it has been using baking powder sourced from different suppliers, and will look into the matter.
Other confections from other stores were also found to contain aluminium, but not as much.
However, a garlic bun from ParknShop, a supermarket chain in Hong Kong, was found to contain high amounts of sodium.
Each large bun contains about 5,749mg, when the recommended daily sodium intake per person is about 2,000 mg.
This was translated from appledaily.com.hk.