Coffee Machines Stock Germs, Say Scientists

Coffee machine making an espresso. AFP photo
Coffee machine making an espresso. AFP photo
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Coffee Machines Stock Germs, Say Scientists

Coffee machine making an espresso. AFP photo
Coffee machine making an espresso. AFP photo

Scientists have found that all kinds of pathogens gather in coffee grounds and in used pod machine capsules.

According to the German News Agency (DPA), Fritz Titgemeyer, head of the Food Microbiology Laboratory at the Munster University of Applied Sciences in Germany, said that damp coffee grounds encourage the growth of germs.

If you leave a used coffee pod in the machine for a few days before throwing it out, some mould spores may remain in there and you may be adding them to your next brew.

Titgemeyer noted that a heat-stable poison may have developed, a so-called mycotoxin, and you will not be able to see or taste it.

The water containers and the plastic tubes in coffee machines are also a perfect breeding ground for bacteria if they are not cleaned properly. The expert said that bacteria can settle there in the form of biofilms. All removable components need to be cleaned thoroughly.

Titgemeyer added however disgusting it may be to imagine one's coffee machine full of microorganisms, they do not really pose a health risk.

"The water is heated to 80 degrees Celsius, which kills any germs present in the water tank," he said.

If you use the machine to make cold drinks, however, you may need to worry. Titgemeyer explained that in cold-extracted drinks like iced tea or iced coffee, all germs will remain. The good news is that many coffee machines include a self-cleaning program, but there are also extra things you can do to make sure you keep the germs at bay.



Many US Ice Cream Producers to Phase Out Artificial Food Dyes by 2028

Volunteers scoop ice cream before a press conference on the steps of the United States Department of Agriculture on July 14, 2025, in Washington, DC. (Getty Images/AFP)
Volunteers scoop ice cream before a press conference on the steps of the United States Department of Agriculture on July 14, 2025, in Washington, DC. (Getty Images/AFP)
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Many US Ice Cream Producers to Phase Out Artificial Food Dyes by 2028

Volunteers scoop ice cream before a press conference on the steps of the United States Department of Agriculture on July 14, 2025, in Washington, DC. (Getty Images/AFP)
Volunteers scoop ice cream before a press conference on the steps of the United States Department of Agriculture on July 14, 2025, in Washington, DC. (Getty Images/AFP)

Dozens of US ice cream producers are planning to remove artificial colors from their products by 2028, a dairy industry group and government officials said on Monday.

The producers, which together represent more than 90% of ice cream sold in the US, are the latest food companies to take voluntary steps to remove dyes since Health Secretary Robert F. Kennedy Jr. in April said the US aimed to phase out many synthetic dyes from the country's food supply.

Several major food manufacturers, including General Mills, Kraft Heinz, J.M. Smucker, Hershey and Nestle USA, have previously announced their plans to phase out synthetic food coloring.

The 40 ice cream companies will remove Red 3, Red 40, Green 3, Blue 1, Blue 2, Yellow 5, and Yellow 6 from their retail products, excluding non-dairy products, according to the International Dairy Foods Association.

The IDFA announced the plan at an event at the US Department of Agriculture headquarters on Monday with Kennedy, FDA Commissioner Marty Makary and Agriculture Secretary Brooke Rollins.

"We know that our current health outcomes, especially for our children, are unsustainable and that American agriculture is at the heart of the solution to make America healthy again," Rollins said at the event, referencing a slogan aligned with Kennedy.

Rollins and Kennedy have worked closely together on food sector efforts like encouraging states to ban soda from the nation's largest food aid program.

Kennedy has blamed food dyes for rising rates of ADHD and cancer, an area many scientists say requires more research.

The IDFA said artificial dyes are safe, but that ice cream makers are taking the step in part to avoid disruption to sales from state efforts to phase out dyes from school foods and West Virginia's recent food dye ban.